P0150 - O2 Sensor Circuit Malfunction Bank 2 Sensor 1 Possible causes:
Faulty Front Heated Oxygen Sensor Bank 2
Front Heated Oxygen Sensor Bank 2 - harness is open or shorted
Front Heated Oxygen Sensor Bank 2 - faulty electrical connection
Fuel pressure not right
Faulty fuel injectors
Intake leaks
Exhaust leaks
Read more: https://www.autocodes.com/p0150.html
SOURCE: 1997 Maxima getting codes P0150, P0155 changed O2
CODE P0155 IS O2 HEATER FAULT MOST LIKELY CAUSE IS WIRING, GROUND CONNECTIONS ,POSSIBLE ECM .
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