Mechanics

SERVICE ENGINE SOON LIGHT

1996 Buick Roadmaster • V8 Automatic • 150,000 miles

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?
Avatar
Jimp_patty
July 29, 2011.



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.

Rasmataz
Jul 29, 2011.