Check Engine Light
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Senior User
Joined: Jun 2004
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From: Deep in the heart of TX
Check Engine Light
My service engine light is on. There are two trouble codes that showed up in the diagnostic...P0174 and P071. Both show the MAF as the problem. I changed it and the light is still on. The other potential problem source appears to be the oxygen sensor for bank 2 sensor 1. Does this approach sound right? Where is the the oxygen sensor for bank 2 sensor 1? Thanks
Carpenter Local 745
Joined: Apr 2006
Posts: 5,794
Likes: 11
From: on da beach
The O2 sensors should be last on the list to even consider replacing
Along with the intake manifold gaskets.
While replacing or cleaning the MAF, the negative battery should be
Disconnected while doing the work.
Then a careful check of any vacuum lines or fittings after the MAF for
Leaks.
PVC and oil cap should also be checked.
Fuel pressure and injector o rings could also cause these codes.
Along with the intake manifold gaskets.
While replacing or cleaning the MAF, the negative battery should be
Disconnected while doing the work.
Then a careful check of any vacuum lines or fittings after the MAF for
Leaks.
PVC and oil cap should also be checked.
Fuel pressure and injector o rings could also cause these codes.
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