Code PO171, PO102, PO131, PO151 on 2001 GMC Jimmy

code po102 refers to mass air flow(MAF) sensor/volume air flow (VAF) sensor---low input======causes --wiring short to ground---MAF/VAF sensor ---ECM

Here's a link to code P0102,P0441 and P0340.

o2 sensor is by the cat and sometimes there is 2 of them one before and one after the cat id look on the exhaust manifold most likely there is one there

PO102 = mass airflow circuit low. Means there's a problem with the mass airflow sensor or circuit. Could be the sensor is disconnected, dirty, or faulty. PO340 = camshaft position sensor circuit. Could be ground wire disconnection, camshaft position sensor failed, PCM is failing, or even the crankshaft position sensor has failed. Good luck. Let us know how it turns out.

Did you replace the fuel filter as well?

More than likely bank 1 sensor has a possible vacuum leak, or a lean misfire on that side of the bank.(lean misfire happens when gap of spark plug are exceed due to wear), As for the 02 sensor I agree that it is reporting the true engine condition on that side of the bank

if i remember correctly that code is running lean on bank one (drivers side) of engine. normally the cause of this code is that the left side o2 sensor in front of the cat. converter is not reading correctly. to fix the problem i would first stop at a parts sore where they do free system scans to erify that is is that particular sensor. if that is the case then the solution is to replace it with a new one. hope this is of help, thanks

Have 2000 Buick Lesabre custom every time car gets up to operating temp. the engine misses going down the road , also let car sit and idle and it shuts off after about 2 minutes , my code reads PO171 system to lean bank 1, changed co2 censor, mass air flow censor, plug wires, and plugs.

http://www.aa1car.com/trouble-codes/codes_199.htm

po171 fuel injection system to lean bank 1 po174 same thing but bank 2 that could be the oxygen sensors