SERVICE ENGINE SOON LIGHT

1996 Buick Roadmaster

Tiny

jimp_patty

July, 29, 2011 AT 9:37 PM

1996 Buick Roadmaster wagon 5.7 liter engine. Service engine light came on - diagnosed as P0174 bank 2 system too lean. What could be wrong?

FOUND 17085 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

July, 29, 2011 AT 9:43 PM

http://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers

Lean fuel condition could be caused by one of the following below:

1.Vacuum leaks
2.EGR and PCV valve.
3.Low fuel pressure.
4.Dirty fuel injectors.
5.Mass Air Flow Sensor.
6.Oxygen Sensor.

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