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MK2 P0420

cbirchy87
cbirchy87
in Ford Focus Club

Featured Replies

Hi.

on my way home today this error code appears. Its linking to the CAT on bank 1. My car only JUST passed the MOT in sept due to emissions I had to replace a cracked coolant tank.Not sure if fitting this plus the new air filter fix it. 

However! this code has appeared today i did have the aux belt replaced last week in case that is linked. I have cleared to code to see if it comes back. #

Would it be worth running come CATCLEAN through?

Thanks in advance. 

  • Quote
    • 1 month later...


    • Author

    Ok so this came back. I'm yet to run any cleaner through the engine. 

    Any advise? Please?

  • Quote
    • Author

    anyone?

  • Quote

    Unfortunately it appears that there are a number of possible causes for that DTC.  P0420 DTC

  • Quote

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