Car Problem Reports

Pontiac Aztek Check Engine Light Due to Gas Cap Issue

Pontiac Aztek Problem
16 Reports
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Model Years Affected: 2001, 2002, 2003, 2004, 2005

Average Mileage: 86,793 mi (54,000 mi - 147,000 mi)


Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

  • Visitor, , 80,053 mi

    Lost my gas cap and had to replace it with a generic one that doesn't fit as well as it should. It was fine for about 1000 miles... but as soon as I hit 80,000 on the odometer the Check Engine Soon light came on.

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  • It happened twice because I didn't turn the cap until it clicked. After fixing the light went off, although 1 time it stayed on. Fixed by removing cap and driving a few miles and put it back on and light is off

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  • Visitor, , 85,000 mi

    Comes on, old cap would not tighten brought a new one, same problem...cap is still loose

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  •  Rookie

    check engine light always on. I had mechanic reset it but it came back on after a week.
    My gas cap completely broke off, I still have one inner piece I use to cover the gas tank so it is not left open to the elements but people always asked me why there was no cover for the gas cap. I hadn't even noticed when I bought my vehicle.

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  • No a problem, used On Star to check it. Since the '01 had an analog OS, I just tighten the cap again. Still happens occasionally with 122,070 miles. Love this vehicle!

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  • Visitor, , 54,000 mi

    Check engine light on after replacing the worn gas cap with generic but nicely fitting cap.

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  • Visitor, , 97,000 mi

    Service Engine Soon Light is on for the second time. I had it reset at a auto parts store
    and yet after three weeks its on again.

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