P0131 Diagnostic Trouble Code Discussion for October 2009
Air Fuel Sensor (Bank 1 Sensor 1) Circuit Low Input (Lean Shift)
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| Help Request | Posted | |
| 2000 Chevrolet Venture 3.4L MIL Lamp on VIN: 1GNDX03E7Y P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. came in for mil light at idle and normal cruise the sensors work fine when you go into wide open throtle or heavy accell the voltage of both sensores drops to 50-60mv i did find that fuel pressure is about 10 psi higher than spec would this cause that and any ... |
October 12, 2009 | |
| 2001 Chevrolet S10 4.3L Surge, Cuts out, MIL Lamp on VIN: 1GCCS19W11 P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. Hey All: This one has me stumped. Truck will start and idle fairly good. When accelerating under load (hills or passing or trying to get speed up ) it falls on its face and will stay running (barely) but NO POWER at all. Feels like a potatoe shoved in the tail... |
October 20, 2009 |
