Help with a P0730 transmission code

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Cadillac Catera and Cimarron Forum Discussion, Help with a P0730 transmission code in Past Cadillac Vehicle Discussion; Had Autozone pull my codes (CEL was on) and I got a P0133 (Bank 1, Sensor 1, O2 sensor), P040 ...
  1. #1
    JimMc is offline Cadillac Owners Member
    Join Date
    Sep 2003

    Help with a P0730 transmission code

    Had Autozone pull my codes (CEL was on) and I got a P0133 (Bank 1, Sensor 1, O2 sensor), P040 (emssions, fuel cap?) and the one that has me worried - a P0730 (incorrect gear ratio, think this means the tranny is sliping).

    Any experience with this P0730 code? I had the tranny flushed about 6 months ago on a Winn machine, and every now and then it does seem to slip out of gear, rev up, then goes back into gear. Would a fluid/filter change do any good? I hate letting the tranny shops lose on it, the usual answer seems to be "ya' need a rebuilt transmission...."


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  3. #2
    Vesicant's Avatar
    Vesicant is offline Cadillac Owners Connoisseur
    Automobile(s): None :(
    Join Date
    Nov 2003
    Jacksonville, FL

    Re: Help with a P0730 transmission code

    133 and 40 sound emmisions (P040 - check the fuel cap for right now. retighten it)

    0730... sounds like the PCM or the TCM may not be reading things right and/or it may be an internal issue. Its good to get it diagnosed first. Even if they say it may need to be rebuilt or replaced, ask them whats exactly wrong with it.

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