P0131 Diagnostic Trouble Code Discussion for January 2004
Air Fuel Sensor (Bank 1 Sensor 1) Circuit Low Input (Lean Shift)
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| Help Request | Posted | |
| 1997 Chevrolet K1500 Cheyenne 5.7L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 2GCEK19RXV P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. Truck was brought to us with intermittent cel and lack of power, no passing gear, will not get [...] mph pulling trailer, customer siad will get to about 70 mph without trailer. Runs good at idle & under light acceleration. Under heavy load vehicle loses a... |
January 28, 2004 | |
| 2000 Pontiac Grand Am SE 3.4L Idle surging VIN: 1G2NF52EXY P0131: Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. Scan codes to find old code PO171 in history, cleared codes and drove car till hot and only in park does the idle search from 450-1289rpm. Will continue doing this a long time then die, but starts right back up.The O2 B1 S1 varies with the surge 74-135mv. The ... |
January 28, 2004 |
