Po171 and fuel trims

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Posted to Technical Discussion Forum on 4/18/2014 15 Replies

This car is fixed but there was a couple interesting things about it. There was a code P0171 Bank1 lean current.

First of all, how much total trim do you think the pcm is capable of?

Fuel Trim Graph

That's right, +74 Holy crap that's a lot of trim correc... Login to read more.

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Vehicle Data

2001 Pontiac Sunfire SE 2.2L

Engine	2.2 L
Trans	4-speed Automatic (Electronic)

Vehicle Data

2001 Pontiac Sunfire SE 2.2L

Engine	2.2 L
Trans	4-speed Automatic (Electronic)

15 Replies Received (View Replies)

15 Replies Received (Hide Replies)

Vehicle Data

2001 Pontiac Sunfire SE 2.2L

Vehicle Data

2001 Pontiac Sunfire SE 2.2L