[GMbill]

Hey
My engine light came on today on my 98 1500 GMC Sierra 2x4 i have my own code reader and the code that came up was P0141 which is an O2 sensor heater circuit malfunction Bank 1 sensor 2. Any idea on where this is located? Big deal or what? Could i fix it myself? and what do these sensors cost 02 are usually around $200 right?

any help is greatly appricated:biggrin:

 

[unplugged]

More info for you.

Great info on O2 sensors at these sites: http://www.aa1car.com/library/o2sensor.htm
http://www.4x4wire.com/toyota/4Runner/tech/O2_Sensor/

Code Detected
P0141 Oxygen Sensor Heater Circuit Malfunction(Bank 1 Sensor 2)

Condition
When oxygen sensor heater operates, heater current exceeds 2.35amps (2 trip detection logic)

Trouble Area

• Open or short in heated oxygen sensor circuit
• Heated oxygen sensor
• Engine Control Unit

 

[GMbill]

thanks man

 

[Cableguy]

Hey
My engine light came on today on my 98 1500 GMC Sierra 2x4 i have my own code reader and the code that came up was P0141 which is an O2 sensor heater circuit malfunction Bank 1 sensor 2. Any idea on where this is located? Big deal or what? Could i fix it myself? and what do these sensors cost 02 are usually around $200 right?

any help is greatly appricated:biggrin:

Another peice of good advise. If you are going to do yourself make sure you are careful not to trash the threads getting it out (let penetrating oil sit for a bit on it) You could ruin the manifold. Or try heat first. Just go easy.
I broke my TB one and another car years ago Trailblazer cost me a mint to fix.
Good luck

 

[Cableguy]

I researched it and it says Bank 1 refers to the side of the motor that the number 1 cylinder is, sensor 2 would be the second sensor from the motor on that side. Hope I didn't confuse you...oh my I need a nap now...zzzzzzzz

 

[robotic_t]

Check the cat its the o2 sensor on drivers side farthest from the engine should be one before the cat and one after and that is the problem one