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oxygen sensor
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  1. Ford S-Max Forum
    Owned the car for 8 years, regularly serviced, current mileage 160k. Basically, sometimes the turbo stops working. I had the car carbon cleaned and the chap doing it ran diagnostic and there was 0.0 voltage reading on bank 1 sensor. I believe this refer to the pre-cat oxygen sensor. I contact...
  2. Diesel Engines (Mk4 Mondeo)
    After 175,000 largely trouble free miles, my Mondeo 2.2TDCi had a badly rotted exhaust mounting. The exhaust itself was fine, so my local garage welded on a new piece of metal to support the exhaust. It may be coincidece, but next day the car put up a P2997 code, which is high voltage on the...
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