any info/suggestions ...code p1151

[cody994x4]

ses light came on out of nowhere yesterday. stopped at auto zone and they pulled code p1151 - fuel air metering

the description was ECM could not adjust fuel trim because of a lean or rich condition. the truck remained driving and running just fine.

probable causes were: bad o2 bank 2, fuel pressure reg.,fuel pressure high or low, dirty/defective MAF, leaking injector, vacuum line on engine.

sunday i had just cleaned my maf sensor with QD electric cleaner and installed a fuel filter that i've had some time. i hesitated to put it on cause its been in the truck for a while and had dust in the ends. i think i will try a new filter first.

when i got home i recleaned the MAF with electric parts cleaner agn, as well as all connections at the intake and also reset the battery.

So far in 40-45miles of driving it hasnt came on agn.

Any info or suggestions?