Join Now
International Automotive Technicians Network

P0151 Diagnostic Trouble Code Discussion for February 2009

Air Fuel Sensor (Bank 2 Sensor 1) Circuit Low Input (Lean Shift)


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0151
Help Request Posted
2004 Mercedes-Benz E320 4Matic 3.2L rich on bank 2 VIN: WDBUH82J24
P0151: B2S1 O2 circuit low volts. Thanks for your time. Looking for another idea on this Mercedes. It came to us after it stalled & wouldn't restart in the bitter below 0 cold. Customer replaced iridium plugs and got it to start. Had the O2 & misfire codes in memory. Found the fuel pre...
February 03, 2009
2005 Checker Avalanche 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3GNEK12ZX5
P0151: o2 signal low bank 2 sensor 1. This vehicle only runs bad after hard acceleration.The map voltage goes drops to -0.60 volts.I removed the map to inspect and it was soaked with oil.i cleaned the oil off and voltage is normal around 1 volt at idle. redrove vehicle runs fine until you accelera...
February 24, 2009
1996 Chevrolet Tahoe LS 5.7L Hesitation, lack of power VIN: 1GNEK13RXT
P0151: Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage. ... for both front o2's as well as a p0134 - no activity B1S1. Both sensors flatline intermittantly - checked heater ckt - fuse OK - checked fuel pressure - 56-62psi is spec - measured 54 - replaced fuel filter - no change. C...
February 24, 2009
2005 Checker Avalanche 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3GNEK12ZX5
P0151: o2 signal low bank 2 sensor 1. This vehicle only runs bad after hard acceleration.The map voltage goes drops to -0.60 volts.I removed the map to inspect and it was soaked with oil.i cleaned the oil off and voltage is normal around 1 volt at idle. redrove vehicle runs fine until you accelera...
February 25, 2009
2004 Mercedes-Benz E320 4Matic 3.2L rich on bank 2 VIN: WDBUH82J24
P0151: B2S1 O2 circuit low volts. Thanks for your time. Looking for another idea on this Mercedes. It came to us after it stalled & wouldn't restart in the bitter below 0 cold. Customer replaced iridium plugs and got it to start. Had the O2 & misfire codes in memory. Found the fuel pre...
February 03, 2009
2005 Checker Avalanche 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3GNEK12ZX5
P0151: o2 signal low bank 2 sensor 1. This vehicle only runs bad after hard acceleration.The map voltage goes drops to -0.60 volts.I removed the map to inspect and it was soaked with oil.i cleaned the oil off and voltage is normal around 1 volt at idle. redrove vehicle runs fine until you accelera...
February 24, 2009
1996 Chevrolet Tahoe LS 5.7L Hesitation, lack of power VIN: 1GNEK13RXT
P0151: Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage. ... for both front o2's as well as a p0134 - no activity B1S1. Both sensors flatline intermittantly - checked heater ckt - fuse OK - checked fuel pressure - 56-62psi is spec - measured 54 - replaced fuel filter - no change. C...
February 24, 2009
2005 Checker Avalanche 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3GNEK12ZX5
P0151: o2 signal low bank 2 sensor 1. This vehicle only runs bad after hard acceleration.The map voltage goes drops to -0.60 volts.I removed the map to inspect and it was soaked with oil.i cleaned the oil off and voltage is normal around 1 volt at idle. redrove vehicle runs fine until you accelera...
February 25, 2009