Question about 2003 Toyota Matrix

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Check engin light is on?

The check engine light is on ?and its not the first time... i left off the gas cap a while back or didn't have it have it tight ... so what might be the problem this time... it came on this morn before work but wasn't on last night when i left work... and this morning i didn't let it warm up... ?

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  • Anonymous Feb 17, 2009

    Oxygen sensors.

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Ok the fuel system is a sealed unit. so try taking the red cable off the battery . ( ONLY ) try starting you car this will drain the car of the electricity from the car. ( not the battery so dont worry. ) hook the cable back up and restart your car. if that does not work your going to have to bring it to a shop. it wont cost much

Posted on May 10, 2009

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Engine light staying on


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I hope they reset the code for you.
Most times when that code occurs it's because the gas cap wasn't put back properly when you got gas.
If they didn't reset it take it back and ask them to reset the code.
If it doesn't come back you know it was a loose gap cap that tripped. If it does then you need to start looking closer. 1st make sure the cap seats well and seal the filler tube. If not replace it.
A small vacuum leak can be difficult to find but you should start by examining the vacuum hoses for cracks ESPECIALLY where connect to their fittings. If cracks are found just cut the end off and reinstall the hose.

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