MAF question

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December 27th, 2016, 11:44 AM

Dagonna1

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MAF question

I have an 03 tahoe Z71 with the 5.3L that is throwing a code that says the left bank is running lean. I haven't noticed any performance issues, but I was wondering if that could be a bad MAF? No other codes have been thrown.

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December 27th, 2016, 12:01 PM

kevinkpk

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I'd suspect an O2 sensor

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December 27th, 2016, 12:04 PM

Dagonna1

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Those are all new. Replaced about six months ago.

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December 27th, 2016, 3:17 PM

kevinkpk

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Quote:

Originally Posted by Dagonna1

Those are all new. Replaced about six months ago.

New dosen't mean good. If it where maf you'd have a performance dtc, and it wouldn't (IMO) just show one bank lean. You can however clean the maf, use maf sensor cleaner.

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