Anyone know what this code means, P0031 bank 1 sen1 heater circuit low

have read other check engine codes but this one is not so clear to me.

ANy help will be greatly appreciated, did a search and found nothing useful on this.

Thanks

Allen

bump i need to figure this out

Take it to the dealer to have them diagnose/possibly replace the primary 02 sensor.... it's important to minimise driving with that code, as the primary o2 sensor performs a significant function with the engine....

It should be easily covered under warranty for you.

-WDS

my car is salvaged i dont have warranty anymore

LoL.... you'll probably have to fork out the cash for a primary 02 then... :(


check the wiring first though, and ensure it's connected securely and completely.... you can then reset your ecu by disconnecting the negative lead and reconnecting it, and if it comes back, you still got a problem.

its come back and gone away about 3 times now, i have a bunch of 02 sensors sitting around the house so ill be fine if thats the problem

Anyone know what this code means, P0031 bank 1 sen1 heater circuit low...
DTC P0031 OXYGEN SENSOR HEATER CONTROL
CIRCUIT LOW (BANK 1 SENSOR 1)
"The ECM provides a pulse width modulated control circuit to adjust current through the heater. The heated oxygen sensor heater circuit uses a relay on the B+ side of the circuit."
http://i49.photobucket.com/albums/f280/vintagefortytwo/Other/02Sensor.jpg

so the heater is somewhere around the sensor, its connected on the same circuit, nice schematic, not i have to find out where it is in my car, thanks for the schematic

so the heater is somewhere around the sensor, its connected on the same circuit, nice schematic, not i have to find out where it is in my car, thanks for the schematic
Also this from the manual:
DTC No. P0130
DTC Detection Condition
Output voltage of heated oxygen sensor remains at 0.4 V or
more, or 0.55 V or less, during idling after engine is warmed up
(2 trip detection logic)
Trouble Area
Open or short in heated oxygen sensor (bank 1 sensor 1)
circuit
Heated oxygen sensor (bank 1 sensor 1)
Heated oxygen sensor heater (bank 1 sensor 1)
EFI relay
Air induction system
Fuel pressure
PCV hose connection
PCV valve and hose
Injector
Gas leakage in exhaust system
ECM

Isnt the search button great? lol... I went boost about 3 months ago and just got this code. (P0031) Where exactly is the sensor located? on the exhaust mani towards the front of the car? underneath the car? is there another location? also, i was looking into 02 sensors,... which of these two links do you guys think would be the solution?

http://www2.partstrain.com/products/Engine/Fuel_Injection/Oxygen_Sensor/2005~SCION~TC~4~2.4~TC--001.html

or

http://www2.partstrain.com/products/Engine/Fuel_Injection/Air_Fuel_Ratio_Sensor/C5015-185688/001039604/2005~SCION~TC~4~2.4~TC--001.html

any help would be greatly appreciated. Thanks in advance

this problem is a tsb for 05 models, its something with the calibration of the primary o2 sensor, if your boosted, its the o2 sensor in the dp, try changing it out and see what happens

so is that in deed an o2 sensor? or an af sensor? reason im askin is cause ive heard it to cost anywhere from 150 to 180 which is the price of the af sensor above, but when i look at o2 sensors, they come out to 30 bux... just wanna clear up my confusion... thanks for the response rrim

they are all o2 sensors, but the ecu uses that to determine the af ratio

So did you guys figure out how to fix this issue?
After we installed my turbo kit, I got the p0031 code.
I checked the vins on the TSB that was issues, and mine is a good 40,000 after the last listed. Do I just need a new 02 sensor? The one in the down pipe?