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tt2001

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Posts posted by tt2001

  1. Get the Pcode read by someone with a scan tool. Write down all the Pcodes and then post them here. Some parts stores will do this for free.

    Loren,

    After changed all four O2 sensors , the CEL still came back on after 10min.( I only disconnected the battery to reset it)

    That's scanner reading:

    P1115

    P1119

    P1117

    P1121

    I check the new parts number was different than the old one.

    Ahead of catalytic 993.606118.01 (OLD) 996.606.161.178.01 (NEW, Black color)

    After Catalytic 993.606.128.01(OLD) 996.606.161.168.01 (NEW, Blue color)

    There's only one way (direction) the each connector can be plug in.

    1. Did I use the wrong parts?

    2. Do I have to reset it by OBD-2 Scanner instead disconnect battery?

    Thank you,

    Tommy

  2. I am not sure if the CEL has anything to do with the Coolant cap. It usually has something to do with the emission issues. I had mine come and go for some time. Would come on stay on for 2-3 days and then go away for 2-3 days.

    It is mostly to do with a marginal O2 sensors. There are total of 6 sensors on a 996 and anyone going bad can turn this light on.

    They replaced all six sensors in my car to fix the issue.

    Keep an eye on the CEL light. If it comes back again have some decode the code and make sure it is not the O2 sensor.

    Good Luck.

    Noor.

    Noor,

    You're exactly right.

    The light on again today, now I think I need to look into the O2 issue.

    Thank you.

    Tommy

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