Question about 2001 Chrysler 300M

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Check engine light on 2001 chrysler 300m. The code says it has to do with either my gas cap not being tight or some sort of fuel fumes. I'm sorry I don't know the codes.

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  • mmarche4 Oct 10, 2009

    The cap hasn't been replaced since I've had the car. I had the check engine light turned off for inspection purposes. After about 60 miles,it did pass inspection and then around 160 miles or so, it came back on. With the same code. Does this seem to be more of a leak in the line or a bad evac system? I looking to find out how much this may cost to repair. I have an after market warranty and hoping this may be covered. Thanks for your reply.

  • mmarche4 Oct 11, 2009

    I'll try replacing the cap first. Thanks alot for your help. I appreciate you taking the time to answer my questions. You've been a big help!

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Make sure that the gas cap is the correct one. If the gas cap was replaced with a different style or a locking cap this will set off the check engine light. It can tell there is a problem because it measures the built-up pressure in the gas tank. So the pressure is not building in the tank due to a loose or incorrect fitting gas cap or a loose,cracked fuel line, or bad check valve in the charcoal canister for the fuel tank vapor release line.

Posted on Oct 03, 2009

  • muebe Oct 10, 2009

    Yes it does sound like it might be a problem with fuel evap canister line but I would try another replacement fuel cap just in case and try it. You current cap might not be fitting well now. There is a certain amount of pressure that builds in the fuel tank and if this pressure is not there then it will trip the check engine light. So a split hose,fuel canister,check valve, or gas cap could cause the problem. It will be a problem in the vapor recovery system so there won't be any apparent fuel leaking.

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