how can i reset the check engine light after i havw corrected the problem?
The check engine came on because of low oil level. I added oil. The car runs fine. The light is still on.
Unhooking the battery terminal will typical clear the codes.
your best option is to have it reset using a scan tool, most parts stores can do this, sometimes disconnecting a battery cable can set off the antithieft system, so make sure you know how to turn it off before disconnecting a battery cable. the other option is you can remove all of the ECM and KAM fuses and wait a few minutes before putting them back in. HTH
Buy a code reader or have a mechanic reset it. An auto parts store might do it for you as well.
how does the fuel economy works cos my car is drinking all my fuel Chrysler PT Cruiser
After the system goes into closed loop the O2 sensors feed information to the computer on how much oxygen is still in the exhaust gasses, then the engine rpm, throttle position, engine vacuum demands, amount of air movement incoming, engine spark advance, all that just to give you the best possible mileage and power possible. So everything need to be functioning properly or it fails horribly. HTH
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Kelly Little Ashford