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Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.Greg, in order to be able to help you we are going to need more information starting with the year, make and model of your car . It would also be very helpful if you can scan the computer system and see what fault code and or codes are that should be setting when the check engine light comes on. Post back with this and complete information ans we can work from there.
Can you disconnect the negative battery cable to clear all the fault codes and then reconnect it and see which ones reset and give me all that returns?
Most codes are retrieved with he key on and the engine off. If you are not able to communicate with the computer then how where you able to retrieve 25 codes?
Okay so what are the codes you getting now?
Well with nothing to work with here I do not know what to advise you needs repair. I can open the post back up for you if you would like and perhaps someone else may have something to offer.