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Thread: Need help with trouble code

  1. #1
    Club Member cobrarwanab's Avatar
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    Default Need help with trouble code

    2008 Chevy Malibu. Code p04720 can't find any information on what this code is. Poor performance, fluctuations in rpm.


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  2. #2
    Club Member mustangmike6996's Avatar
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    Are you sure that number is correct? It seems like an extra digit for a P-0 code unless it's manufacturer specific.

    P0472 exhaust system pressure low
    Nothing for P4720

  3. #3
    Club Member cobrarwanab's Avatar
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    That's what I was thinking. It's my cousins car and she said that was the number her onstar gave her. Does the Malibu have a exhaust back pressure sensor?


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    Club Member mustangmike6996's Avatar
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    I'm not too familiar with GM but maybe a failed MAP sensor,EGR stuck or something causing excess pressure. I'd assume that there'd be more DTCs to accompany it tho. Any repair work done recently?

  5. #5
    Club Member cobrarwanab's Avatar
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    Quote Originally Posted by mustangmike6996 View Post
    I'm not too familiar with GM but maybe a failed MAP sensor,EGR stuck or something causing excess pressure. I'd assume that there'd be more DTCs to accompany it tho. Any repair work done recently?
    She lives in Indiana and just baught the car from a used car lot. She took it back in and they said the scan came up "null" so she used her onstar and they gave her the above code. That's pretty much all the info I have lol. She said the problem is somewhat inermit but occurs often. Sometimes won't shift out of 1st gear and when cruise control is used Wil sometimes jump from 2000 rpm to 4000 rpm.

  6. #6
    Club Member 1BADAIR's Avatar
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    Tcc code I believe . Gm uses the code then a failure code also probably p0472-0
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