Question about 2001 Toyota Corolla

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Engine light on

No change in the performance..i was just driving omn the highway andf it came on..I already checked the gas cap was tight...corolla 2001

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The gas cap was not tight enough...light is off

Posted on Jun 17, 2009


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Answer - I have a 2012 Toyota Sequoia and the Check Engine light came on and then the Trac Off light came on. The car felt like it was in 4 wheel drive. I read around and found two things that I had to do to get the car fixed.

(1) Clean the gas cap, lubricate the "O" ring around the gas cap, and read the gas cap. It has to click at least once. Make sure there is no gunk around the gas nozzle as well so that the cap and nozzle get a tight seal.

(2) I unscrewed the battery cables positive then negative. I let them be disconnected for 10 minutes. I returned connected the battery and both warning lights were now off and car was back to normal (other than having to reset clocks, radio, etc).

Note: I did notice that the car at first did not idle as it did beforehand. It took a few minutes of me driving around the neighborhood and then the idling returned to normal. Hope this helps.

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When a repair is done on a vehicle, it takes 2 drive cycles for the ECM, ( electronic control module/computer ) to recognize that a repair has been made.
A drive cycle covers many things that you normally do when you drive the vehicle, including low speed driving, highway speed, braking, idleing. Turn the key off and then do it again.
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Without knowing the original symptoms I can't help you beyond this, although you may check your gas cap to make sure it's tight, if it's not it can, and often does cause the check engine light to come on.

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Check that your gas cap is on tight (clicks). Take your car to an auto store and have them read the codes(usually free). They can tell you what the codes mean. You may only need a new oxygen sensor. I have a Mitsubishi that the light regularly turns on in the winter and off in the summer(196,000 miles). Gas mileage is stable. Your car is newer but a road trip may be all it needs to turn off the light.

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My 2005 kia amanti has check engine light on which generates a P0441 code. The engine has been silently dying while driving and at times will lurch forward when driving 70mph on highway and also while...

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