At 21K miles, the Check Engine, VSC and TRAC OFF lights came on on my xB. My xB has the AEM cold air induction system. I bought my xB in CA 14 months ago and drive it on the highway extensively. The local dealer here in TN, where I live, said that the computer trouble codes were conflicting and only compounding the mystery, and also: "We don't really know what's wrong with it..." But, after 3 repeat visits the local dealer decided to put in a new Mass Airflow Sensor to hopefully solve the problem.
I have the AEM cold air induction system. AEM recommends cleaning the filter every 50K miles, SCION says every 30K miles. I cleaned and re-oiled the filter after the first incidence of these mysterious trouble lights. The dealer blames the AEM cold air system and tells me that I must clean and re-oil the air filter at every oil change and can expect problems caused by the AEM system in the future.

Anyone else have a high(er) mileage SCION w/the AEM cold air induction system or this mystery of a problem?

Edit: That was a little odd. No clue what it did that. I think this is a bad ECU problem. I recall some other ppl having a problem like this & I think thats what they said was causing it. Im not fully sure on this though :oops:

what a cop out

The dealer blames the AEM cold air system and tells me that I must clean and re-oil the air filter at every oil change and can expect problems caused by the AEM system in the future.

If you oil it too much the oil can ruin the MAS.

I have 20k with Injen short ram , no prob yet.

Personally I don't think your VSC and Trac system has to deal anything with the Mass Air Flow Sensor. Looks like a ECU problem or some sort of a wiring problem. My .02 cents :)

You know, a few months ago, the same thing happened to me. Except it was because my rear left tire was rubbing on my ABS wire (long story). And then about a month ago, the lights came back on. The dealership pretty much told me they didn't know what was happening and just restarted the car's memory.

I'm having a lot of trouble with my xb lately and i think i've been to the dealership about 5 times in the past 3 or 4 months. I'm sad. :(

Personally I don't think your VSC and Trac system has to deal anything with the Mass Air Flow Sensor. Looks like a ECU problem or some sort of a wiring problem. My .02 cents :)

actually it does! I had the same problem and the dealer found that the sensor did not have a good seal on it. So the sensor got dirty, the dealer cleaned it and now no more problems.
Little note: I didn't twist the bulb housing on my taillights properly and the VSC and Trac light came on too!! How wierd is that?!?!

This has nothing to do with your intake...The problem is more than likely a faulty knoc sensor...I had the problem on my box at only 3500 miles...

Tell them to check your sensors on the computer and I can bet its your knoc sensor and that intake (especially being the AEM scion brand sold to us from the dealerships) cannot be blamed as your problem...

What year is your box??? If it's an 04' there is a TSB thats going to be put out for this knoc sensor problem, but I'm not sure when...I'd heard about it at out last meeting...Apparently this sensor is failing on quite a few boxes these days...

Oh and if they try and tell you its safe to drive as it is they're wrong...Tell them to keep it and give you a rental car until they have your box fixed..."Yes"you can drive it in this condition, but if this is the problem thats found on your box the valve timing is going to be way off and you'll get horrible gas mileage...

Best of luck to you and your box,i hope you get it going soon...

DAN

This has nothing to do with your intake...The problem is more than likely a faulty knoc sensor...I had the problem on my box at only 3500 miles...

Tell them to check your sensors on the computer and I can bet its your knoc sensor and that intake (especially being the AEM scion brand sold to us from the dealerships) cannot be blamed as your problem...

What year is your box??? If it's an 04' there is a TSB thats going to be put out for this knoc sensor problem, but I'm not sure when...I'd heard about it at out last meeting...Apparently this sensor is failing on quite a few boxes these days...
DAN

I thought the knoc sensor was only on the boxes that were dying on the road. :shock:

I disagree with the comment that it is not intake related.

I had the exact same problem with my box:
http://www.scionlife.com/forums/viewtopic.php?t=26645&highlight=

and it was the MAF sensor. The codes pointed the way to the diagnosis and the knock sensor was never a consideration.

Whether oil comes from an "over-oiled" air filter or from the breather tube, it is the intake that is facilitating contamination of the MAF sensor...

The dealer told me that AEM intakes were different in such a way as to prevent MAF sensor failures, but I thought it was BS since my Injen was virtually identical in design... now it seems that AEM's are no better in that regard. :oops:

There must be some set of variables that combine to create MAF sensor failures for some CAI-equipped and not others...

My guess is that when MAF sensors are assembled, like any other mass produced product, there are production variations. Combine a sensitive MAF sensor with an owner who opts to go full CAI (regardless of brand) and they have a failure.

I had the same lights twice, first time it was the charcoal canister at 6k and then one time the gas cap was not on tight enough :)

I had the same lights twice, first time it was the charcoal canister at 6k and then one time the gas cap was not on tight enough :)

charcoal canister = because u like to top off?

Jeff

I had the same lights twice, first time it was the charcoal canister at 6k and then one time the gas cap was not on tight enough :)

Freaking gas cap can cause that thing to go off too?? Dam we got a sensitive system! well, I hope you got some answers from someone on this topic PushyTop :D

Wow guys I'm really sorry for just assuming this problem can only be caused by a faulty knock sensor...I had no idea that the system is so sensitive even the gas cap being on a little loose could set it off...

I hope you get some answers on your box too, and that it'snothing serious :D

DAN

my xb had the same problem .i took it to a dealer and they told me that a relay basically shorted out and they had to order the part .but problem was it took them almost a month to the day i took it in to fix it

Wow guys I'm really sorry for just assuming this problem can only be caused by a faulty knock sensor...I had no idea that the system is so sensitive even the gas cap being on a little loose could set it off...

I hope you get some answers on your box too, and that it'snothing serious :D

DAN
yup, so whats the list so far thats connected to the VSC/TRAC

1.) MAF sensor
2.) knoc sensor
3.) tailights not conected right
4.) loose gas cap
5.) shorted out relay
6.) abs wire

Am I forgeting anything? :o

Add speed sensor unless you have that as abs wire.

http://www.scionlife.com/forums/viewtopic.php?t=7237&highlight=vsc+trac+wheel

what's with all the speculation?

the trac/VSC lights flash on whenever you have an ECU error code. in the scion case there are probably other things attached to it as well, as noted by stylis.

I think he was making a point that numerous failures can trigger the same sequence of lights...

Than I guess thats it, we now have the list of everything that can cause the freaking VSC/TRAC light to come on. So when ever someone searches it, the list is here. Good hunting everyone! :D

1.) MAF sensor
2.) knoc sensor
3.) tailights not conected right
4.) loose gas cap
5.) shorted out relay
6.) abs wire

this has been coming up a couple times and narrow down to actual problems and not just assuming it will be either the knoc sensor or with the intake. i believe dan (7red7) had to wait for about month also for the part.

1.) MAF sensor
2.) knoc sensor
3.) tailights not conected right
4.) loose gas cap
5.) shorted out relay
6.) abs wire

this has been coming up a couple times and narrow down to actual problems and not just assuming it will be either the knoc sensor or with the intake. i believe dan (7red7) had to wait for about month also for the part.

Yes I did sir, you are correct...31 grueling days of driving Cavaliersand Kia Rio's sucked big time *LOL*!!!

DAN

FYI the lights typically will flash for ANY ECU error code. it's a sign that tells you to get the error codes read and find out what is wrong with your car.

I had the same problem, the lights came on a couple of hours later after I installed an alarm. I disco'd the negative line from the battery and it took care of the problem. It was something simple, but you guys have tons of stories on why it's been going on, wow.

Well, so far my xB has been through 3 mass airflow sensors in as many weeks. According to Don Jacobs Scion in Milwaukee (that's where I got the 3rd sensor installed while on a road trip, with the help of Scion Customer Assistance) the VSC and TRAC OFF lights come on whenever the Check Engine light comes on. They also replaced the AEM air filter, but the technician said that these oiled cloth air filters are notorious for knocking out mass airflow sensors, even if they're installed in a standard airbox. The engine code reads, 'System Too Lean'. The first item in the troubleshooting area of the shop manual is, 'Air induction system', then 'Injector blockage', then 'Mass airflow sensor'. I'm not convenced that my problem is truely solved, or that it's wholly caused by the the cold air intake system. This is a sensitive system, I'll keep you guys updated.
By the way, Scion Customer Assistance is fantastic!!!

I am currently having the same CEL indications.
Can't be my MAF sensor because I'm not running one (Using HKS VPC2).
The knock sensor sounds like a possibility, will have to replace it and see what happens.

I'm guessing that with the TRAC OFF indication it actually turns off the traction control reguardless of the switch position. I have gotten the wheels to spin (some) in first and second gear (automatic trans).

the same thing happened to our 4runner and the dealer told us it was going to cost more than $1000 to fix it......it still hasn't been fixed

Recently I had this problem, I had changed my gas cap to one that wasn't emissions correct. I recently read about this in this forum. after I put the oem cap back on and reset the lights by pulling the EFI fuse for a few seconds the lighs went out and haven't come back on.

I bought a used 04 XB AT, with 72K+ miles, on test drive the lights weren't on, but loud turbine sound from left rear. Used car dealer replaced left rear wheel spindle, sound went away, but now all 3 lights (TCS/VSC/CEL) were on and stayed on. He checked code, I don't know what it was, but he supposedly took it to a Toyota dealer, and they "fixed it". Except now, those lights don't come on at all when you first start the car, (owner's manual says they should) and the traction control button doesn't seem to do anything - no light on dash, no change in car performance. So I'm wondering, did they just disable the TCS/VSC?

damnb, my lights TOO have now come on.

Im just scared if it's a MAF sensor problem or my brakes. Seriously though, I don't hear the ABS clicking at the point where I'm in motion (which is just around 15mph). Im kind of scared, but it still runs. Nothing weird when I brake or what not, its just, them damnb lights on!

My lights that are on are of course VSC/ABS/TRAC OFF/Brake

: (

Okay, so all three of these lights came on my car yesterday. I have the exact same situation as the poster that started this. I have the AEM CAI from Scion, and about 21,000 miles on my car. Judging from what you guys are saying, I have a couple other things that may contribute:
I replaced the AEM filter with a K&N (which are oiled, the AEM filter is dry)
As for the VSC and TRAC OFF, I replaced my steering wheel and ripped out that wiring harness and I think that has something to do with those lights, because they come on when driving in neighborhoods (a lot of consecutive, tight turns) But now all three lights are on all the time. How much have you guys been spending to get this problem fixed? How much do they charge for diagnostics? I think AutoZone does it for free...

I had similar problems, the dealership replaced some kind of gear related to the timing and VVT and My problems are gone.

If you guys want details let me know and I can post everything when I get home and look back at my paperwork.

Here's what AutoZone's diagnostic thing had to say:

"The PCM has determined that the voltage signal from camshaft "A" position sensor in the bank 1 indicates a timing over retarded condition. (Bank 1 identifies the location of cylinder #1, while bank 2 identifies the cylinders on the opposite bank.)"

Anyways, after they did that, I drove off and my lights weren't on anymore...I'ma talk to the dealership about it tomorrow when I get my oil changed.

once the CEL is triggered, your VSC/TRAC OFF lights will AUTOMATICALLY come on, regardless of the problem. it will disengage those items
get it scanned, find the code to see the issue

Here's what AutoZone's diagnostic thing had to say:

"The PCM has determined that the voltage signal from camshaft "A" position sensor in the bank 1 indicates a timing over retarded condition. (Bank 1 identifies the location of cylinder #1, while bank 2 identifies the cylinders on the opposite bank.)"

Anyways, after they did that, I drove off and my lights weren't on anymore...I'ma talk to the dealership about it tomorrow when I get my oil changed.

That was the exact same reading I was getting. My little box went through hell before they replaced the right part... At first they said it was a VVT Valve but that didn't fix the problem... When they finally fixed the problem they replaced what they called the VVT Gear

***THIS WAS ALL COVERED BY WARRANTY****

My invoice said:

14064 Code P0012 Cam position over retarted tech line case TA061220151 Recomend Replace VVT gear removed timing chain timming working properly now cleared code returned to customer.

^I know this dosen't make much sense it's just what they typed up on my invoice.

This was about 2 months ago 2,500 miles. I have not had any problems since.

Here was my original post

http://www.scionlife.com/forums/viewtopic.php?t=115789&highlight=

the Tech line case # is with Toyota
they most likely were having troubles figuring out what to do and where to start, so most techs in that situation will call Toyotas Tech line and walk them through a step process to fix the issue. I guess first try (with tech line) was the solution, since you've had no issues since.

IMO they should have called toyota tech the first time on this, would have made things a little simpler

On my home from from work, driving a steady 7o mph for about 80 miles, the lights popped back ( Check Engine . VSC, Trac Off ) .... No weird noises and I could not tell a difference in the ride ....

Here is a strange kicker, when the error lights came on, I stopped several times to do some running and each time the XB got restarted, the lights still appeared, but after about an hour those error lights shut off ?

I have no idea, nor does the dealer what is the issue !

So, my same issue happened twice so far !

if you have an intake... its most obviously a dirty MAF..

I figured mine out. I just have to clean the small damn thing.

Hope you can fix it soon..

No intake - This one is bone stock !

Still a MAF Sensor ?

Can be... thats always the first problem... Check how much sut is on the sensor...

If not then it can be an ABS problem... or the stupid gas cap like everyone else had... ehhe.

When this same problem occurred for me, I cleaned and tightened the gas cap, then disconnected the battery cables for about 15 minutes, and then presto, no more idiot lights. I assume that by resetting the computer by disconnecting the battery cables, if something was wrong, after reconnecting the cables the idiot lights would come back on, right?

cleaning the gas cap...what have ECUS come too?

The "trac off" and "vsc" lights (and obviously the airbag) both came on when i changed steering wheels also. Im going to take to the dealer sometime soon hopefully it can be taken care of. Will these lights being on hurt performance in any way?? A reply here said the gas mileage would suffer. Does anyone know any FACTS?

Jones, just try disconnecting the battery for a few minutes, then connecting it again.

Tried that man, didnt work, thanx though

damn... this many people with the lights on. well, mine is also on and it idles like crap and once reached 3000 rpm, it boggs.

did anyone experience this? I took my batt terminal off to clean the corrosion and after I was done, termonal cables back on and this all started to happen. The car will run, I had to drive it to work and back today but I like said, it bogs after 3000 rpm.

damn... this many people with the lights on. well, mine is also on and it idles like crap and once reached 3000 rpm, it boggs.

did anyone experience this? I took my batt terminal off to clean the corrosion and after I was done, termonal cables back on and this all started to happen. The car will run, I had to drive it to work and back today but I like said, it bogs after 3000 rpm.

My car ran great... just had the lights on.

ok guys, I went Advandce Auto here in va beach and they scanned my puter for free. it provided the following errors.

DTC (Codes)

P0103
MAF or VAF
Circuit High Input

*************************************

DTC (Pending Codes)

P0101
MAF or VAF
CKT Range/Perf

P0103
MAF or VAF
Circuit High Input


any words? :-/

My car rand good with the lights on, only a little slower off the line. Turns out my timing chain was off 4 teeth.

:come:

MEE TOO!!!
I was told it's just the sensor and they are replacing it, I hope it isn't anything more!

:come:

MEE TOO!!!
I was told it's just the sensor and they are replacing it, I hope it isn't anything more!
I hate those lights! They've reset the sensor several times,,,
Check Engine, VSC, Trac Off GO AWAY!

:come:

MEE TOO!!!
I was told it's just the sensor and they are replacing it, I hope it isn't anything more!

You know, my problem was the MAF sensor. I bought one off ebay for like 46 bucks shipped, slapped it in and all problems solved. how is your car running?

what did you do that caused the lights to appear?

:bow:
My car needed a new cam shaft?...
They replaced it and the lights haven't come back on. Yippy!!!
It's weird that o many people have had that exact same problem. All around the same mileage too! Well, the dealership told me that all of the lights come on whenever anything is wrong so we could all have a different problem. I'm not sure what caused it but I'm very happy those pesky lgihts are no longer lit! :pray:

Recently I had this problem, I had changed my gas cap to one that wasn't emissions correct. I recently read about this in this forum. after I put the oem cap back on and reset the lights by pulling the EFI fuse for a few seconds the lighs went out and haven't come back on.

My vsc light and trac off light came on after i hooked up a after market tac and i keep reading about this EFI fuse but cant figure out where it is ? so where can i find this fuse?

i would like to know where the EFI fuse is located on the xb

So do we have a definitive answer as to what these warning lights mean? My '05 with just under 72K lit up tonight with the VSC/TRAC OFF/CHECK ENGINE light combo. Seems to be driving okay, I can't tell a difference in anything. I've been using a shop for service that's not my original dealer... do I have to go to the dealer for a warranty thing like this might be?

Update from my post last night... I filled up this morning, and the lights went off! They had come on when the gas gauge was between halfway and a quarter tank left. Very strange, I guess I'll need to keep my eye on it.

My '06 xB had this same group of lights come on. Once in awhile they are not on, but are mostly all the time. My dealer said it was the cam timing gear, and that he has seen it on a couple other xB's. They are replacing it under warranty (my lights came on around 25,000 miles, and I now have close to 29,000 in my first year. I'll update to let you know if it worked.

UPDATE: I got it fixed under warranty last week, the tsc works again, and the lights are now off. They said they replaced the cam timing gear.

Last night @ 38,??? miles the VSC, TRAC OFF, and CEL all came on but the car ran normal and didnt notice anything out of the ordinary...I have had my intake on for about a year with no problems...The lights stayed on for about 35 miles, then I shut the car off and let it sit for a few minutes...Started it back up and the lights were now off...Drove it home another 35 miles and the lights did not come back on...Not sure what the problem was...I did nothing to reset the lights, they just went off on there own...

Well, my RS2 with 54k miles on it has the issue now.

I was driving back to the office from lunch and the CEL/VSC/TRAC OFF lights all came on. I stopped by my dealer (it was on the way), and they said they were swamped and for me not to worry and bring it back in the morning...so....

(and yes, it has the yellow powdercoated Scion/AEM CAI)

UPDATE:

After diagnosing the error code, the dealer said it was a faulty camshaft timing gear assembly. They said there was a TSB on this issue and they put the part on order for replacement.

They advised it'd be fine to drive for a few days until the part came in.

UPDATE:

After diagnosing the error code, the dealer said it was a faulty camshaft timing gear assembly. They said there was a TSB on this issue and they put the part on order for replacement.

They advised it'd be fine to drive for a few days until the part came in.

That was the first thing they did to mine when I started having the light problems... it did not fix the problem.

The actual fix was a "VVT gear"
My invoice said:

14064 Code P0012 Cam position over retarted tech line case TA061220151 Recomend Replace VVT gear removed timing chain timming working properly now cleared code returned to customer.

^I know this dosen't make much sense it's just what they typed up on my invoice.


Here was my original post

http://www.scionlife.com/forums/viewtopic.php?t=115789&highlight=

Nice. Well, at least I'm 'in the system' now...and I really don't mind having a new part installed. If it doesn't fix it, I'll just take it back. They reset the light at the dealership and I drive it for about 15 mins at varying speeds on the way to work this morning and it hasn't come back on yet....

After taking a look at your problem, I've noticed that mine might be different. My daily commute to/from work is 20mi 1-way... When my light(s) came on, they continued to stay on continuously until I took it to the dealership this morning...so...

I guess we'll see.

Mine's an '05 and yours is an '06...the service manager said that there was a TSB fix for my issue, too...maybe it's different on an '05 for some reason. Either way, I can't find a TSB for an '05 that seems to fit the problem...so heck, I dunno... :doh:

the lights just came on this morning on my wifes xb. taking to dealer to be safe in an hour. hope its something they can fix and we can still drive the car this week

Just had this happen to me also. VSC, TRAC OFF, and CEL came on. I'm freakin out as I pull into my garage.

I figured it was because I was listening to my bass uber loud (chest thumpin, hard to breathe kind bass) and it must have tripped something up.

I just disco'd the negative battery cable and reconnected. Voila! Fixed. Heh, thats when you know you have a kick arse system.

Occurred at 65,200 on my '05 xB. I just brought it in today. The Scion tech said the CAM gear assy had cracked and the timing was going out. Good thing it lasted the trip from Sacto to Concord here in CA. Full warranty coverage on the car saved me on this. They're going to check the whole system for warpage. I thought it might be a O2 sensor or the gas cap being the culprit. Anything that affects the power output of the engine causes the sensors to turn the lights on if it doesn't self correct.

I like my Bento Box. Not that it smells like sushi inside... :rofl:

Got this yesterday.....ScanGauge is reading P0012 so it looks like it's going in the shop :-(

Used the ScanGuage (great piece of equipment!) to clear it once but returned after 50 miles.

damn lights just came on for me too! '06 with 27,650 miles

turns out it was the gas cap. gotta love SL for the info. saved me a trip to the dealer

HOW DO YOU RESET THE LIGHTS? who knows the prosedure?

found this but it did not work for me. so somthing mite really be wrong

http://www.scionlife.com/forums/viewtopic.php?t=176127&highlight=vsc+reset

car @~31k

I have had this problem intermittently since January and I finally was able to find a good dealer to service it after I moved.

They ran the codes, said there was a problem in the camshaft (i'm not sure if it was damaged or if it was a faulty solenoid). I had it fixed under warranty (they had the car for a whole day).

Either way, this morning, one day after repair, the lights came back on. Still no reduction in performance or anything, but I'm wondering if my cars suffering one of the other symptoms (MAF sensor, etc). I'd like to think that they got it by pulling the codes, but that doesn't seem to be the case.

Back to the dealer.......

Same here....'05 xb. The girlfriend just called me stating the lights just came on when she turned it on. We are going to go by the dealership tomorrow. I will try to keep everyone updated. Has anyone had any trouble getting the dealership to fix the issue(s) under warranty for this? I have the 6 yr platium one. I know I am over for an oil change but thats about it.

Should have followed up on my last post...but I think Toyota solved the problem for me back in August (knock on wood).

Originally they though it was a bad timing solenoid related to the VVT-i system. After changing the solenoid...well as I said, the lights came back to I took it back to them. They opened it up, replaced the entire valve (why they did not do this the first time, I don't know) and since then, no issues.

I had around 33k on the car at that point and they covered it completely under warranty. i even got a loaner corolla for the day on their time. Sloane Toyota in Devon, PA.

I see a lot of people saying it the cam/timing/VVT. What did you tell your dealership...just these lights came on was does it mean? or did you say hey I heard other people have had these types of issues?

Well...she turned back on the car to come home and the lights were gone. I am going to keep an eye out for them though.

Update: About 20K miles later, I haven't seen these lights pop up. Should I still have it checked though? I know some people are running on stock stuff, me on the other hand, had a short-ram intake that made my MAF sensor dirty.

Do you think my lights will pop up again? Im scared.

I just told the dealer the lights came on. I read all sorts of stuff here about how it may have been related to the MAF, etc, etc...but it ended up being the valve as I described.

If that is indeed the problem, the lights are going to come and go until its fixed. There's a TSB out on it, and if your car is still under warranty they should take care of it.

My lights came on in the summertime. Took it to a friend and the code cam up as cam shaft something?

Was fine after he reset them.

Last night they came on again. My wife has the vehicle today and she sadi they went back out.???

Should I take it in?

I have 54000 miles on it. 2005 xb

Sounds like you should take it in. Its just going to keep going on and off until the valve is replaced. Since its a TSB, the dealership should take care of it.

well last week i just turned over 21k on my 06 xB
VSC trac off and check engine lights came on.
took it to my local dealer and they said the seal on the gas cap was bad. but had three diffren codes. P043E,2401,2419
they replaced the gas cap and lights were out for about 100 miles then came back on took it to the dealer again now they are telling me it is a charcoal canister and a vacume switch.dont have the codes yet i suppose to get it back about 2pm today.... hmmmmm

@dibzzz W T F... weird problems...

^^^^ i know huh!!
ok they got more codes this time they are P043E,P043F,P2401,P2402,P24119!!
replaced charcoal canister(whatever that is) and purged the vsv valve.!!!and said that they hope thats what it was!!
does anyone know what these codes really mean? or where a guy could find them?
i did check out a new xD today too lol..(just in case)

@ DIBBZ ... well, I wonder what codes I'll get if I stop by the dealership for some pure maintenence problems. Hrmmm... is this all under the 60K warranty? Cuz, Im like near 60k, more like... 52K... Im hoping for like part changes :D

yeah it was all warranty work. doing good so far!! 300 miles later!

knock on carbon fibre..lol.

I had this issue myself where the vsc, trac and check engine light came on..... And I guess with many people on this thread its like kinda hard to tell what it could be, givin the different testimonies on here.
I had the "Cam Shaft Actuator Code Issue" which seems to be the infamous mytery code. I had toyota replace the actuator and when they ran the code again, the actuator code came back on, We found out it was the ECU that went faulty.
The other factor involved was that the ECU can fail at any of those codes, MAF or O2 Failures, although they may be fully functioning, the ECU can through out codes that can make you think somethings wrong. Its a big issue with the Scions right now as well as the Matrix is affected by this too. Toyota TAS and TSB is looking into it, seeing if a recal should be done.

well lets see about a week later now and got the lights again this morning hmmmm calling the dealer in the am....

Got the same issue this morning, a day after throwing my Injen CAI on. I got about 28k miles on the box. Well I took it up to Autozone after reading this thread and the guy said it was the MAF sensor the Intake temperature sensor (saying it was hot). Well as soon as he was done and went inside, I started the car, no more lights. I'm kind of hesitant about taking into the shop since I don't know if the exhaust and intake will void the warranty or not. If it does, I don't want to fork out $$$ for something I can fix myself by getting a new MAF sensor.

well got into see the dealer got the same 5 codes as last time and well they basiclly told me they werent sure whats making it do this. and for me to call them as soon as the lights come back on!WTF! time for a diffrent dealer i guess.

my lights went on Friday right before going to San Diego (bummer) but i still drove the whole way there and back to Santa Barbara with out any type of problem. the lights are still on so i went to the santa barbara dealership and they want to charge me $110 just for the diagnostics alone. i have the 100,000 mile warranty on the box that they didnt even ask me about before putting the bill in my face. the ventura dealership said they are crooks here in SB and that they just wanted my money. other than that lame experience with the dealership, im going to clean my MAF tonight and try to reset the lights to see if thats the problem since i took off after the guy showed me my bill. i am guessing the MAF is the problem due to no power loss and no lag in acceleration. the idle is a little rough (oil change is happening in the next hundo miles so i am assuming thats the reason for the rough idle). i have the K&N Typhoon intake and havent had any problems till this. if anyone has anything to say regarding this or if you believe im wrong please let me know.

sorry for the novel i wrote.

Take it to Autozone and see if their FREE DIAGNOSTIC test tells you anything. It may even reset the lights, like it did for me.

thanks for the suggestion.

last night i took everyones problems in to consideration and decide to just tighten the gas cap till it couldn't tighten anymore and reset the lights and they havent came back on yet. problem fixed? maybe for now but i just wanted to try the easiest solution to the problem first. if they light up again im going to Autozone. Thanks for the heads up!

hey, guys. hope all are well.

got the trio of lights to come on, on my way home this evening. going about 55 mph on the xprss way. box has about 46k miles and purchased used in Dec. yes, it's got the CAI. unsure of brand, as I have not been able to find any decals/markings yet. i'll try the 'cures' found on this thread (THANKS, all). However, thought I'd ask...

would the stock warranty take care of any repairs if something was found wrong? ie camshaft gear, maf sensor etc.? thanks, for your time and advise! i've heard good things about elmhurst scion - most likely the place she'll visit.

the light came on the car this morning. :(
didn't go to the dealer yet.
my 2004 box has 65k miles on now, is there anything still under warranty? like cam shaft something sound serious !!

please let me know

I keep having the same problem over and over. Mine seems to be some type of evap control problem. The dealer told me that the charcoal canister was bad so they replaced it at 34k under warranty. Good thing because those filters are $360. Now im at 42k and the lights are back on and I had it scanned locally and the codes are all the same and quite a list. P043E, P043F, P0456, P2401, 2402, and 2419. Of course I called and voiced my frustration as the nearest dealer is 200 miles away. The dealer told they would look at it again but that my warranty is up now. Its only been 4 months and i'm not too happy. So if you find these codes in your ecm it's prob not the filters.

Alright, this is my first post so if I do something wrong or w/e dont give me crap for it, I'm all good with constructive critisism though. I have read through all of these posts and tried many of the suggested remedies. However my problem came up in a unusual manner and wanted to see if anyone esle had this exact problem. I recently sound deadned my box, and did it in the free time I had, so it took about 5 days, with only a few hours of labor time. Point being, I had the batter negative terminal unhooked for those days just so the door open light didnt run. When i plugged the battery back in I got the VCS, Trac Off, and CEL picture. Keep in mind, I have a stock engine/ exhaust. No mods under the hood except engine cover. Inside same deal, I only stripped and put down deadner inside the box. Anyone have this problem after having the battery unplugged for some time, and any remedies that I can try before taking it to the dealer?
Thanks,
Kinser

:bow: I had the same with all the light's, THey do all trigger anytime the Chk Engine light come's on. Mine was the VCS, Code was say camshaft position sensor timing over retard. Dealer said I was useing inproper oil (5W30 full synthetic) , 5w30 is what's on oil cap and they said it was wrong..lol.. good luck at dealer.

i just had my vsc and trac lights come on and off on my way home from work, first time this has ever happened

the car was shifting violently and it got worse as my trip went along. it almost didnt even want to move from a dead stop when i was near my house; felt like a motor mount was busted or the tranny was about gone

HELP!

anyone have any idea what the cam issue costs out of warranty?

OK guys' here's mine:
disconnected the battery
swapped new tails in
reconnected battery
checked lights
-no problem-
disconnected the battery
cleaned up my amp wiring which was messy and unfinished
reconnected battery

got a rough idle immediately
and won't rev above 3000rpms
read p103 code (MAF)
pulled the mass air off my 2 week old Fujita CAI, cleaned both and reinstalled
reset ecu
codes popped again and problem persists

Survey Says!: Dead mass air, dealer looked at it and replace the sensor, said it was a surge in the electrical, probably from disconnecting the battery. i was assured it was not my CAI which was surprising to me

Ok I have posted with this issue before. The same 3 lights come on all the time on my box. I have a 2005 and about 68000 miles on it. It seems that they come on after I get gas or when the gas gauge gets to 3/4 or 1/4. I experience no issues that I can tell. After driving and stopping about 5-8 time with engine shut down and restart the lights go away. Sometimes they go off while driving.
Box is stock no mods...
Any suggestions?

Yay today I got the same lights come one & i have 65k miles. It had me freaked out 'cause i just picked up my car sat after getting the turbo installed so I instantly thought it had something to do w/ that.

After going to Auto Zone, the reading came back with a P0172 and says faulty O2 sensor or MAF sensor so we'll see

Trying the disconnect the battery idea right now so hope that works!

Forget the battery, just pull the fuse for 60 seconds. Under the hood, near the battery under a small cover, the EFI fuse I believe.

that would make it that much easier

i didn't find a EFI fuse, i found a EFI relay, but that didn't do the trick. I'll keep looking

2005 Scion XB

Okay, I got the same three lights that everyone has been talking about, but here's the thing: I went out and bought a scanner and as soon as I plugged it in, the lights went away. In the stored code window it told me that the code was "p0012" (camshaft retard timing). I cleared the memory on the scanner and ran the scan again...it came up with nothing and lights will not come back. It's only been a day, but I'm trying to figure out what happened.

There are zero mods on the car and the initial fault lights happened while driving on the freeway. I haven't noticed any change in engine performance whatsoever and no funky sounds under the hood.

Could it be that the initial fault was a glitch of some sort or do you think it will come back in a day or two when the computer picks up on the problem again?

keep in mind, I didn't clear the fault myself, it cleared on its own as soon as I plugged the scanner in.

I'd appreciate some feed back, it IS my first time using a scanner as well, I'm more of an "old school" car guy.

I have found this thread very useful when my xB's lights were on last Saturday. The lights went away Sunday and Monday and it came back on today. The VIN falls into the range of the TSB EG0307 found on Tomas's docs link. I have made appointment with a dealer tomorrow. Hopefully it is the same P0012 problem so that the fixing is covered under the 60,000 powertrain warranty. My car has 38k now.

Update:

The lights were not on this morning when I dropped it off at the dealer. I was told that they can pull the code even the lights went away. Just got a phone call from them. No surprise, the rep told me that it is the VVT problem which is everyone talks about in this thread. The problem has been fixed with no charge under the 60,000 powertrain warranty.
Thanks to everyone who contributes to this thread!


About the dealership pricing:
I went to three dealers for a quote on pulling the code, their prices vary from $120 to $90 and I ended up with the $90 one. If this is not some other issues that are not covered by the warranty, it is still better to pay them $90 to pull the code. I wondered when the service department will have the Scion's pure pricing policy.

Well, the lights haven't come back on for three days now, but I don't know if there is really a problem or not. As far as pulling the code goes, I just went and picked up my own diagnostic scanner for $80. You can get them cheaper, but this one sees pretty good. If the dealers are charging $90-$130 just for the scan, buying your own is even cheaper AND you can do it as often as you want. Just FYI.

Thanks Josh!

Where did you buy that scanner? I'd like to be prepared if it happened again.

Update:

The lights were not on this morning when I dropped it off at the dealer. I was told that they can pull the code even the lights went away. Just got a phone call from them. No surprise, the rep told me that it is the VVT problem which is everyone talks about in this thread. The problem has been fixed with no charge under the 60,000 powertrain warranty.
Thanks to everyone who contributes to this thread!


About the dealership pricing:
I went to three dealers for a quote on pulling the code, their prices vary from $120 to $90 and I ended up with the $90 one. If this is not some other issues that are not covered by the warranty, it is still better to pay them $90 to pull the code. I wondered when the service department will have the Scion's pure pricing policy.

The same thing has happened to me.On a long drive from Florida to Massachusetts, the lights came on. Next morning they were off. Fast forward a week, they came on again. I came to this site and did the remove fuse trick, lights went out , came on next day. Made appointment with Copeland Scion, Brocktom MA last Friday for Monday. Lights went out over the weekend, still took it to the dealership, the code came up, P0012 timing gear failed. They called me to tell me that the new one was frozen right out of the box, would have to keep overnight. It was fixed by 10 AM this morning , no charge. :clap: The only thing we noticed was a lack of power, no other noise or anyhting else. BTW we have 20,400 miles on an 06. It looked like it would have been over $700.00 for the job including $100 diagnostic charge.
Thanks to all that contribute to this site, a big help. It also mentioned TSB EG003-07

Rich

I am glad you had it fixed at no charge. I don't notice any power change after the work. Maybe I am not very sentative. Anyway, 20,400 for an 06 is very low to me considering you have long drive from Florida to MA. Mine has almost 40k now. (There are people who have more than 80K)


The same thing has happened to me.On a long drive from Florida to Massachusetts, the lights came on. Next morning they were off. Fast forward a week, they came on again. I came to this site and did the remove fuse trick, lights went out , came on next day. Made appointment with Copeland Scion, Brocktom MA last Friday for Monday. Lights went out over the weekend, still took it to the dealership, the code came up, P0012 timing gear failed. They called me to tell me that the new one was frozen right out of the box, would have to keep overnight. It was fixed by 10 AM this morning , no charge. :clap: The only thing we noticed was a lack of power, no other noise or anyhting else. BTW we have 20,400 miles on an 06. It looked like it would have been over $700.00 for the job including $100 diagnostic charge.
Thanks to all that contribute to this site, a big help. It also mentioned TSB EG003-07

Rich

[quote="lancerjin"]I am glad you had it fixed at no charge. I don't notice any power change after the work. Maybe I am not very sentative. Anyway, 20,400 for an 06 is very low to me considering you have long drive from Florida to MA. Mine has almost 40k now. (There are people who have more than 80K)

We had a loss of power before the fix. Yes we put 3500 miles on it this winter backand forth to Florida. It is my wifes car and she only puts on about 4k a year, it really is like new.

Did youy ever find out where Josh got his scanner?

Sorry, Josh has not replied to me yet. Maybe he forgot :tap: