Check Engine P0412
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, Check Engine P0412 in Past Cadillac Vehicle Discussion; Hey guys, I recently replaced stock air box with intake kit in my 1996 Fleetwood Brougham. I drove it around ...
  1. #1
    FleetwoodCruiser is offline Cadillac Owners Member
    Automobile(s): 1996 Fleetwood Brougham
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    Check Engine P0412

    Hey guys, I recently replaced stock air box with intake kit in my 1996 Fleetwood Brougham. I drove it around for awhile and it gave me check engine light with code P0410. I did the AIR pump disable procedure and still check engine light. Checked the codes again and came up with P0410 and P0412. I erased the codes and drove around for about 40 minutes with no light and then it came back on again. This time it is just the P0412. Anyone know how I can prevent this code from appearing?

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  3. #2
    jayoldschool's Avatar
    jayoldschool is offline GM RWD V8 addict
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    Re: Check Engine P0412

    did the AIR pump disable procedure
    On the 96, you must reprogram the PCM to remove the AIR code.

  4. #3
    FleetwoodCruiser is offline Cadillac Owners Member
    Automobile(s): 1996 Fleetwood Brougham
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    Re: Check Engine P0412

    Quote Originally Posted by jayoldschool View Post
    On the 96, you must reprogram the PCM to remove the AIR code.
    Gotcha, I'm guessing I have to take to performance shop to have that done?

  5. #4
    jayoldschool's Avatar
    jayoldschool is offline GM RWD V8 addict
    Automobile(s): 81 FWB D'Elegance coupe
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    Re: Check Engine P0412

    Actually, a dealer can do it. There is a TSB on it. You can also do it yourself, but you'll need a special cable and software. Alternatively, you can get a PCM tuner to take care of it.

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