WHERE IS BANK 2 SENSOR 1?

2003 GMC Sonoma

Tiny

LarryW60

June, 30, 2012 AT 12:05 PM

Getting codes P0174 and P0155 on my 2003 GMC Sonoma 4.3 L, 2wd. Already replaced MAF, Dist (leak), fuel filter, Injectors (erroded and leak) and both upstream O2 sensors. Found gas cap loose 50+ miles after reading codes. Help?

FOUND 30 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

June, 30, 2012 AT 12:26 PM

Where is bank 2 sensor 1? See below

Heated Oxygen Sensor (Bank 1 Sensor 1) (4.3L VIN W)In left exhaust pipe, in front of catalytic converter.
Heated Oxygen Sensor (Bank 1 Sensor 2) (2.2L VIN 5)In exhaust system, after catalytic converter.
Heated Oxygen Sensor (Bank 2 Sensor 1) (4.3L VIN W)In right exhaust pipe, in front of catalytic converter.
Heated Oxygen Sensor (Bank 1 Sensor 2) (4.3L VIN W)In exhaust system, after catalytic converter

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