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p0426

  1. Cooky

    P0426 Catalyst Temperature Sensor Range/Performance (Bank 1)

    Hi all. I Hope you guys can help with this. I am getting an intermittent fault starting the car from cold. P0426 Catalyst Temperature Sensor Range/Performance (Bank 1) If I reset it it stays off for a while but ultimately comes back. From what I have read so far it sounds like and oxygen...
    • Cooky
    • Thread
    • bank catalyst p0426 range or performance sensor temperature
    • Replies: 2
    • Forum: Engine
  2. DennisTheMenace

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

    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?
    • DennisTheMenace
    • Thread
    • bank catalyst cdi p0426 range or performance sensor temperature w203
    • Replies: 0
    • Forum: Engine
  3. T

    Exhaust related error codes - help required please

    Hi, I am a newbie to fault diagnosis so require a little help. I have a late 04 w203 c220cdi and the EML came on last week. I just purchased a cable and have plugged it in and I got the following back from my software: P0426 Catalyst Temperature Sensor Range / Performance P2084 Exhaust Gas...
    • tordofm
    • Thread
    • codes error exhaust p0426 p2084 related required
    • Replies: 13
    • Forum: Engine
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