Options

How do I clear a system lean bank

Tried everything to clear lean bank brand new o2 sensors new fuel pump and fuel filter checked for vacuum leaks and nothing works

Answer this question I have this problem too

Is this a good question?

Yes No
Score 0

4 Comments:

@aaronjense14525 what exact year and engine size is your Expedition? What was the original code you got when you scanned your OBDII?

by

@oldturkey03 2002 ford expedition xlt 5.4

by

@oldturkey03 the codes were lean bank 1 system 1 and 2

by

@aaronjense14525 so something like P0171 and P0174. For those codes I would recommend you clean your MAF sensor and check for any exhaust and vacuum leaks. Sometimes a bad intake gasket can be the culprit as well.

by

Add a comment