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code 21

Since this morning, my car is runing badly.

I checked with consult and I have an error 21.

 

Where does I have to look for?

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    Since this morning, my car is runing badly.

    I checked with consult and I have an error 21.

     

    Where does I have to look for?

    code 21= ignition signal circuit ;)

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    Wiring Harness or Connector to the Power Transistor Unit (PTU) has failed. Try cleaning connectors on PTU and Coilpacks first.

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    • Author

    Can it be the PTU that is running badly?

    Because actually the car is running good again...

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    Can it be the PTU that is running badly?

    Because actually the car is running good again...

    Yep its either poor connecion (corroded connectors), broken wiring or the PTU itself.

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    "code 21= ignition signal circuit"

     

    If you getting this code and the car is running it must be an old stored code. I would do a reset and test again, think you will find it gone., however as it is there anyway it would point to a previous ptu problem, checking the connectors as others have said is a good idea.

     

    Jeff TT

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    • Author

    i did nothing an the car is running better now...

    I think I will buy the ptu...

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