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Discussion Starter · #1 ·
I just pulled a P0170-Fuel Trim Code and I'm not sure what to do:

In the past month I've changed the fuel pump relay, MAF, ECT, thermostat and the Pressure Control Line. I don't appear to have any vacuum leaks either. Before I change all of these sensors, the dealership read my fuel richness and it was as follows:

006 - Basic setting
Display group 32
System in basic setting
4.7%
15.6%

I'm not sure what this code means, or what to do. Any suggestions?
 

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22 Posts
Discussion Starter · #2 ·
I'm still having this trouble. Does anybody have any ideas?

I think it might be the O2 sensor, but I'm not sure...I think there are 4 of them? How do I know which one to change?

HELP!
 

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Discussion Starter · #4 ·
Thanks for your help!

I have cleared the code several times, but for some reason it keeps coming up.

I'm pretty sure that I've checked everything else on your list. Do you think O2 might be a potential cause?
 
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