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Chevrolet Cavalier Check Engine Light Due to Gas Cap Issue

 
Chevrolet Cavalier Problem
38 Reports
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Model Years Affected: 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005

Average Mileage: 108,413 mi (46,000 mi - 196,000 mi)

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Illumination of the Check Engine Light may be the result of a loose or worn gas cap.

  •  Rookie

    check engine light keeps coming on for a PO455(i think this was the no.) and it said evap leak large. I look around my fuel cap and there is raw fuel all over the seal, no matter how tight I tighten it, there is always some gas around the outer fuel cap. Changed cap 4 times. Check engine with same code keeps coming on.

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  •  Rookie

    pulled in to station got gas then for two mounths check engine lite stayed on ,got computer tool and it said gas leak,then got gas one nite and lost gas cap,and got new one next day and two days later lite went out.

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  • Visitor, , 165,187 mi

    The engine light is on due to some issue with the gas cap however, I bought a new gas cap but the light it is still on.

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  • Visitor, , 196,000 mi

    got one out of junkyard, no light anymore lol

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  • Visitor, , 69,780 mi

    Check Engine light came on, took the car to get it diagnosed. Turned out to be the gas cap. Replaced and the light turned off.

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  •  Rookie

    The check engine light kept on going on and off. When I finally replaced the cap ($8 at Autozone) the whole cycle stopped.

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  • Visitor, , 139,000 mi

    Check Engine light stays on due to the gas cap not on correctly

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  • Visitor, , 70,000 mi

    gasket on original gas cap got cracks in it and did not seal sufficiently well. Also have to make sure to click it down 3 times to get the new one to seal properly. New cap did not have nice connector strap either. Check engine light would come on and had the code checked for free at the parts store and they told me what it could be so did the cheapest fix first after finding the cracks and that fixed the light coming on problem.

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  • Visitor, , 120,000 mi

    same thing couldn't figure out, then realized was gas cap

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  • if i dont crank it twice closed the engine light comes on

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