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Why is my Malfunction Indicator Light on?

The malfunction indicator light came on in my PT Cruiser 2007. Then my car started to jerk. Anyone know why?

  • It then stopped jerking but the light is still on.

  • Answer:

    I can tell you exactly why ....... Something malfunctioned. That's why the light is on, to tell you something wasn't working right. The only way to find out what caused it is to have it checked for codes. Many aftermarket parts stores will read the codes for free in the hopes that you'll buy a replacement part. But keep in mind that the codes don't always point directly to the problem. Best thing is to take it in to your mechanic and have them check it out and see what's wrong. You could try the ignition switch method to get the codes, also. Cycle the ignition switch three times on and off (on, off, on, off, on -- on being run position, not the starter position) and it should show some codes in the digital odometer area of the dash. These are very basic codes, but can sometimes lead to the right direction. Once you get your codes, either search the internet or post a new question with the code numbers.

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Other answers

take it in and get the code read your mechanic can take the computer will hold a code inside

bacon boy

If your engine misses a certain amount of times, it will turn the light on. Most time it will be from bad plugs and spark plug wires. Have them both changed. Never do one without the other or the problem will come back in a short time. It is caused by sparks running down the outside of bad plugs to the engine by way of carbon tracking on the inside of the plug wire boots which ruins the boots as well! Disconnecting the battery and connecting it back will turn the light off.

Jackolantern

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