The O2 heater receives power from the PCM. Did you check the O2heater ground connection?
SOURCE: location of a o2 sensor 2001 nissan maxima
bank 1 refers to the side of the engine that #1 cylinder is on , and sensor 2 refers to downstream , after the catalytic converter. , this link shows bank 1 on a 2001 nissan maxima V6 being on the firewall side . if you had a 4 cylinder it would be downstream after the catalytic converter .
http://www.autozone.com/N,26200242/shopping/specsSelect.htm
SOURCE: o2 sensor bank 2 sensor 2
Bank 2 will the the passenger side or right side and sensor 2 is the O2 sensor behind the catalytic converter.
SOURCE: 2002 Pontac Grand Prix GTP P0171 code engine stumbling at times
Bank 1 is the frt side exhaust manifold (did they say bank 1 sensor 1?),you can start by replacing that sensor,i would check the intake for leaks ,the gm 6cly. are known for bad intake gaskets,you will see oil coming out form the frt or rear of the intake,also check your atifreeze overflow bottle for bronwish sludge,which means that the oil is mixing with the antifreeze.A leaking intake could cause that lean condition.
SOURCE: have p0130 and p0133 codes 98 toyota tacoma
check the mass air flow sensor there maybe dirt on the filiment inside the sensor causing false readings. cleaning or replacing it may make the codes go away.
SOURCE: Hi I have a fault code P1180 Linear O2 sensor /
Yes you have a problem with wiring for the O2 sensor shorting out somewhere in the line. It could be anywhere from the sensor to the ECU. Make sure there are no breaks, burns, or crushed parts of the wiring.
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c
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