What Do These Codes Mean???
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Cadillac Seville / Cadillac Eldorado Forum Discussion, What Do These Codes Mean??? in Past Cadillac Vehicle Discussion; I got 2 codes i have no idea what they mean PCM P0603 - Control Module Long Term Memory Reset ...
  1. #1
    da17 is offline Cadillac Owners Member
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    What Do These Codes Mean???

    I got 2 codes i have no idea what they mean

    PCM P0603 - Control Module Long Term Memory Reset

    and

    PZM B2472 : Low Beam Fault

    what do they mean???

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: What Do These Codes Mean???

    P0603 may just be from pulling battery power. Done that lately?

    B2472 is obviously a headlight problem.

    If you have no problems and they are history, clear 'em and ignore them unless they come back.

  4. #3
    iametarq's Avatar
    iametarq is offline Cadillac Owners Connoisseur
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    Re: What Do These Codes Mean???

    as ranger said it's a headlight problem. are your head lights working when you turn the lights on?

    the 2nd one i'm not sure on.

  5. #4
    da17 is offline Cadillac Owners Member
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    Re: What Do These Codes Mean???

    the headlight is a history and they are working fine.. but i didnt touch the battery!! what does the P0603 mean exactly? bad battery? bad cords/cables?

  6. #5
    FrankT's Avatar
    FrankT is offline Cadillac Owners Enthusiast
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    Cool Re: What Do These Codes Mean???

    Quote Originally Posted by da17
    the headlight is a history and they are working fine.. but i didnt touch the battery!! what does the P0603 mean exactly? bad battery? bad cords/cables?
    .
    P0603 is An intermittent loss of power or ground to the PCM and it caused a PCM reset. Check all power and grounds to the PCM if they check OK the PCM could be going bad. At this time just clear codes, check your battery connections and see it the DTC returns, do not replace the PCM yet.
    Frank

  7. #6
    da17 is offline Cadillac Owners Member
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    Re: What Do These Codes Mean???

    Where/what is the PCM? where can i find it?

  8. #7
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: What Do These Codes Mean???

    PCM (Powertrain Control Module) is under the air filter intake box for cooling.

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