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diagnostic code 21 Ignition circuit

Help- I have a non starter. Getting code 21.

Getting fuel. CAS OK injectors working. No spark. PTU fine (s2 and spare s2)

 

It was starting first turn every time, then went to it yesterday and no go- was very low on fuel tried to fire a few times but no start. Put some fuel in it and no start, not even trying to fire.

 

Any advice would be very welcome

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    • Featured Replies

    right my mate had this. we tried everything including testing ptu,cas etc. he took it to nissan who diagnosed it with a faulty ptu loom and cas loom. replaced them and she fired up.

     

    my advice is to check continuity on the loom from the cas and ptu to the ecu

    Edited by hellraiser

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    • Author
    right my mate had this. we tried everything including testing ptu,cas etc. he took it tonissan who diagnosed it with a faulty ptu loom and cas loom. replaced them and she fired up.

     

    my advice is to check continuity on the loom from the cas and ptu to the ecu

     

    Thanks mate, I'll check it.

  • Quote
    Help- I have a non starter. Getting code 21.

    Getting fuel. CAS OK injectors working. No spark. PTU fine (s2 and spare s2)

     

    It was starting first turn every time, then went to it yesterday and no go- was very low on fuel tried to fire a few times but no start. Put some fuel in it and no start, not even trying to fire.

     

    Any advice would be very welcome

    Most lightly a dirty connection at the ptu.Seen this before.

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    • 2 weeks later...
    • Author

    Hi- Tried cleaning the PTU loom connectors with a fine file, closed them over a little to ensure better clamping/contact and nothing. Though now getting a code 55! I raked through old threads on here and took up the suggestion of AndyP - try cleaning with alloy wheel cleaner, tried it, with a fine paintbrush and - Bingo!.... one running engine!

    Thanks for your help

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    • Author
    Hi guinnal were you looking for me? you can get me anytime on mickmcl007@hotmail.com cheers mate..

     

    I was looking for you- it was back when you were selling the loom, I came over to your house!

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    interesting i am having a no spark issue at the moment after replacing the loom.

     

    dan.:confused:

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    sorted my not starting problem! this connection was not tight!:oops: pushed together and started first time!:clap:

     

    dan.:cool3:

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