1996 XJ diagnostic code 72
96XJ...check engine light came on last night while driving in the major snow storm here... pulling code #72.. catalytic converter circuit...the weird thing is I just took the XJ into the dealer for a recall repair (E22) about a week ago... they reprogrammed the PCM so it can detect a bad cat... Is it possible the cat was bad even though they said it was OK? if so, why did it take over a week for the CEL to go on? Is #72 something a bad O2 sensor would trigger?.... could the VERY deep wet snow have shorted something like the o2 sensor? Any advice is appreciated so I can go to the dealer with info.
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