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Discussion Starter · #1 ·
My CEL has been going on and off for the last month with a P0171 code (bank 1 too lean) and I resolved that issue with hose clamps and a new MAF. But now I have a persistent CEL thats been on for the last 5 days and when I use my scanner it shows 1 DTC but instead of a code it shows N/A. has anyone else had this issue?

the trucks running fine, so it doesnt seem to be a major problem.

any insight? thanks
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