exige

My current setup is the MMW Header and S-Pipe along with the Injen CAI. Both have been on the car for over 2 months. Injen CAI has nothing to do with this considering what code it is. The header DOES HAVE the CEL Eliminator. I was just cruising on the highway last night when the light came on. First time I've seen it and as I said, it's been over 2 months since I put the header in. Haven't touched the engine bay since then....no idea why it's happening. All I know is that it refers to the second o2 sensor (i think). Any help in why it's happening and what I can do to fix it is appreciated. Thanks.


P0137:
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

zer0

put another cheap antifouler on the MMW one.

exige

is that all it needs?

exige

and is the code harming anything/reducing hp?

mattvs

You'll run richer than normal.

I'd get under the car and pull off the CEL eliminator from MMW and give it a good once-over with a hose or a big breath of air through the pipe. Check out the secondary sensor as well to see if it has anything on it.

exige

will do thanks


any other help is appreciated guys, thanks in advance

exige

bump for more advice

agmech

same problem here. I put the MMW header and s-pipe on around easter and I just had my code read at the dealership. they told me it was the missing cat from the OEM header

exige

to be honest with you, it went away on its own about 20 miles after coming on.....its been about 200 miles since then and i havent seen it at all......

JimmyScion

in my opinion you should leave the eliminator on and put an antifouler on the second sensor(midpipe), if it continues to appear after a while put another antifouler an top of the other one.

JimmyScion

what happens with aftermarket headers is that it eliminates the cat, thus having more exhaust pressure on the 2nd 02 sensor the check engine light comes on. With the anti fouler your trying to take the sensor a little farther back(outwards) so it doesnt read that much exhaust pressure ,therefore reading the same exhaust pressure as if it had a stock manifold
*sometimes it needs 2 antifoulers together*
*this was the cheapest way out but it has worked for many of my friends*

The other remedy that you have is to buy an 02 sim card or cel eliminator, this is more expensive but it also works.I suggest that you buy it from the company that sold you the product, if the company doesnt have one try an anti fouler . If you wish to buy a 02 sim card or 02 eliminator , be sure that wich ever it is works with the brand of header you have,I've seen alot of cases that these things dont work on some kind of headers. HOPE THIS HELPS OUT!, GOOD LUCK!

bbsciontc

just FYI, O2 sensors work by comparing the amount of oxygen in the exhaust stream to ambient air.

lilsouljahboy

where exactly can you get these anti foulers and o2 sims

randode

iTrader: (-2)

sim cards are for cellular phones. 02 simulators are for cars.

JimmyScion

02 sim stands for (02 simulator)

06SuperWhite_SoCal_tC

But you did say "02 sim card" that's why he is correcting you.

randode

iTrader: (-2)

yeah!

Skeletor

Oh b!tch ! You just got jacked b!tch !!

DouBLeJ16

That's not the normal error code for the anti-fouler fix.

I forget what the exact code is but it says "something Below threshold", nothing about low voltage.

I'm thinking low voltage in sensor 2 means the sensor is either damaged or it may of came unplugged somehow.

filmnews

Do you like your MMW headers? Do it improve your performance very much?