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P0131 Diagnostic Trouble Code Discussion for September 2008

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

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Trouble Ticket Help Requests for DTC P0131
Help Request Posted
2000 Infiniti QX4 3.3L MIL Lamp on VIN: JNRAR07YOY
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Input (Lean Shift). h02 sensors b1s1, b2s1, replaced and wiring repaired. now have check engine light and trouble codes po131 and po151, circuit low voltage. scan tool shows voltage to 0.67v highest 0.0v lowest while lab scope shows 0.00v to 800 milivolts both banks. suspect com...
September 02, 2008
1996 Oldsmobile Cutlass Ciera 3.1L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1G3AJ55M5T
P0131: Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Input. ... fuel trims and idle hunts up and down. yes the miles are right not 100,000car recently bought from old couple that never drove it.little known about history of car.we have hit a brick wall on this one.would appreciate any help.we've done all we can think o...
September 15, 2008
2006 Volkswagen Jetta TDI 1.9L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 3VWST71K36
P0131: o2 sensor circuit bank 1 sensor1 low voltage. runs poorly first cold start up will die and have to be restarted. Runs better with codes in system will barely move without faults. Checked fuel press for tandem pump was jumping all over replaced with new one still does it. maybe bad injectors? also do not k...
September 30, 2008