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  1. M

    P0430 and O2 Sensor reads

    Thanks for that reply. I didn't know about the ECM reset - I'll give that a go. I was trying to use the fuel trims and voltage traces to determine whether or not the CATs were plugged or damaged. Based on what I've read, bad or plugged CATs are indicated by upstream and downstream O2 sensors...
  2. M

    P0430 and O2 Sensor reads

    BLACKJKU, You may have noticed this was my first post. Rest assured that having gone through the trouble of making an account and asking for help is because I was not able to solve my problem by searching Google. It sounds by your reply that you actually know something that I don't. Since...
  3. M

    P0430 and O2 Sensor reads

    Hi gang, Looking for some experienced members to have a look at my O2 sensor readouts and help me solve P0430. Recently replaced cracked bank 2 exhaust manifold, trying to determine if I have O2 sensor issues or leaks. I've attached the fuel trims and O2 sensor traces - please let me know if...
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