My 1998 GMC Jimmy has the service engine light on. I took to an auto parts place and they said the codes are PO 171 system lean bank 1 and PO 174 system lean bank 2. What does this mean and how to I go about fixing it.
Thanks
GMC Jimmy Engine Codes
Nov 23, 2003
2 Replies
According to my Cav service manual could be low fuel pressure, MAP sensor, front O2 Sensor, water in fuel, Vacuum leak......
This could be a number of things, but one possibility is that I believe the central-point fuel injection system on these engines can be prone to injector clogging - that could be the cause of the lean condition.
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required