Loose gas cap

Asked by GuruWH3Q7 May 08, 2018 at 11:08 PM about the 2008 Chrysler PT Cruiser Wagon FWD

Question type: Maintenance & Repair

I have a 2008 pt cruiser...gas cap light came on
last week...tightened the cap and light went
out....today the engine check light came on...i
checked the gas cap and it was loose...i turned it
about 5 clicks and i can pull the gas cap off
without turning it...is this whats causing the check
ENGINE light to come on?

1 Answer
1,115

Jordan answered 6 years ago

The light coming on is just suggesting that you haven't tightened the gas cap, the actual engine code is the Evaporative Emissions System has detected a small leak, and 90% of the time, it's just because the gas cap is loose, but since you've already tightened it and it keeps coming back, try cleaning the o-ring in the gas cap itself, and if the code comes back, you'll have to get your Evap lines inspected with a smoke machine. But yes, a loose gas cap WILL set off a Check Engine Light. I'd try fixing the gas cap before getting too deep into it.

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