P0472 & p0603 code help
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P0472 & p0603 code help
Pulled these two codes today and need some help on what they are and what problems they cause and solutions.
I know I am being needy but you guys are so nice figured I would start here.
Thanks
Jim
P.S. Ok figured out the p0603 but still not sure on the back pressure one
I know I am being needy but you guys are so nice figured I would start here.
Thanks
Jim
P.S. Ok figured out the p0603 but still not sure on the back pressure one
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Joined: Sep 2007
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From: Medford Oregon
Jim, it means the exhaust back pressure sensor has failed or is unplugged. PCM is detecting no voltage from it. Its sole purpose is to help the PCM determine how much the EBPV should close on cold mornings. If you have the EBPV (exhaust back pressure valve) unplugged, like some of us then it does nothing except throw the pesky code.
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Jim, it means the exhaust back pressure sensor has failed or is unplugged. PCM is detecting no voltage from it. Its sole purpose is to help the PCM determine how much the EBPV should close on cold mornings. If you have the EBPV (exhaust back pressure valve) unplugged, like some of us then it does nothing except throw the pesky code.
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I guess what I meant is with the sensor being broke off does it have the same affect as others disconnecting it. I am assuming disconnecting it helps these trucks in some way.
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