P1151 Engine Code

[steeda46]

Can anyone give me more details on this code and what might be causing it...

P1151 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 2.

 

[AquamanCHS]

I got this code last summer and I replaced my bank 2 (passenger side? i forget) upstream (that is, between your engine and your cats) oxygen sensor. Are you getting a pulsing rev at and gassy smell at idle?

 

[steeda46]

The car idles great and runs awesome at full throttle. The only time I can tell something is wrong is when I'm cruising at a constant speed it feels like the engine has a small amount of hesitation to it - almost like it has bad gas.

I'm not running cats so my car always has a slight fuel smell to the exhaust.

Where did you get your O2 sensor from?

 

[01TrueBlueCobra]

Just buy new O2 sensors. It would be better if you buy them in a pair. Like the 2 fronts left and right.

 

[ToplessStang]

Just replace the first O2 sensor you see after the exhaust manifold (upstream) on the drivers side (bank 2). The other side might be good for many more years.