check engine light

gvgregory
0

Asked by gvgregory Mar 24, 2013 at 03:31 PM about the 2001 Volvo S40

Question type: Maintenance & Repair

What are possible causes for this. O2 sensor?

4 Answers

mrmoony
2,110

Bad or loose gas cap common cause

Js08016
19,745

What trouble code do you have? -Jim

1 out of 1 people think this is helpful.
judge_roy
Not Active

You've overfilled your gas tank drowning the charcoal canister forcing the computer to not sense any back pressure, and not able to purge correctly- couple of months with this and the "black tape" solution would be okay, but we'd have to know that this was the only reason.

tenspeed
55,345

There are around one thousand engine trouble codes. It could be anything. Get the codes read, write down the number and post it.

1 out of 1 people think this is helpful.

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