P0131 Diagnostic Trouble Code Discussion for June 2020
Air Fuel Sensor (Bank 1 Sensor 1) Circuit Low Input (Lean Shift)
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| Help Request | Posted | |
| 1999 Chevrolet C2500 Suburban 7.4L Misfire VIN: 1GNGK26J6X P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. i have intermittent misfire on all odd number cylinders. bank 1.. stft b1 is pos 50. b2 its 0. spraying carb cleaner along intake does not change trims. i suspect the o2 sensor is low due to a lean condition. what besides intake gaskets could make it lean ... |
June 08, 2020 |
