Need help code ERROR p0171 or code [51 in the haynes repair manual]
"pchotspot" > wrote in message
ups.com...
>I just bought a [96 grand voyager 3.3L. V-6] and the check engine
> light is on. the major error/code is 51 or P0171. indicating: "A
> lean air/fuel mixture has been indicated by an abnormally rich
> correction factor." what does that mean and how do I correct the
> malfunction?
>
P0171 - Fuel system too lean, bank no.1
It means the engine is running lean. This could be caused by many things,
such as a vacuum leak, low fuel pressure or a failed O2 sensor. It would be
easily diagnosed with a scan tool ( not a code reader ) and fuel pressure
guage.
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