Is this for the upstream sensor or the downstream sensor

Question

1999-2005 Pontiac Grand Am

Generación final del Pontiac Grand Am.

Rep: 13

1

Opciones

When I had a scan check down on my car, it came back with a p0131 code. Is this for the upstream sensor or the downstream sensor or both?

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oldturkey03 @oldturkey03 Rep: 781.3mil 1.1mil 892 2.3mil · Answer 1 · 2015-06-02T18:15:04-07:00

Respuesta Más Útil

Rep: 781.3mil

1.1mil

892

2.3mil

Opciones

Ken Cappon, there are a few causes for the P0131 code:

- Faulty Front Heated Oxygen Sensor (HO2S) Bank 1

- Front Heated Oxygen Sensor (HO2S) Bank 1 harness is open or shorted

- Front Heated Oxygen Sensor (HO2S) Bank 1 circuit poor electrical connection

- Inappropriate fuel pressure

- Faulty fuel injectors

- Intake air leaks may be faulty

- Exhaust gas leaks from here

Replacing the Front Heated Oxygen Sensor (HO2S) Bank 1 usually takes care of the problem.

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Puntuación 1