W203 CDI P0426 - Catalyst Temperature Sensor Range/Performance Bank 1

Discussion in 'Engine' started by DennisTheMenace, Jun 5, 2014.

  1. DennisTheMenace

    DennisTheMenace Member

    Messages:
    36
    Joined:
    Jul 11, 2013
    Location:
    west Dorset
    Car:
    2004 C220 CDi Avantgarde est
    Just had this code come up, car is running no different, looking at cat temp readings they sit around 80-90-100c and fluctuate up and down within these ranges, when driving it goes to 16.9c!

    Is the the o2 sensor in the exhaust that gone **** up?
     

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