2010 Chevy 1500 Z71 throwing 5 codes P0641
07-19-2016, 03:59 PM
#1
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2010 Chevy 1500 Z71 throwing 5 codes P0641 Any help is greatly greatly needed here and appreciated. 6 weeks ago my truck fell into reduced power mode...after two weeks the dealership replaced ECM, MAP, Throttle body and Fule Pressure Sensor....$2000 fixed it for one day then it fell back into reduced power mode throwing 5 diff codes. If anyone has a solution for this please let me know, the delaership doesn't even know how to fix this. I will pay you money for an absolute solution. Thanks.
07-19-2016, 09:23 PM
#2
P0641 is a 5 Volt Reference Voltage Incorrect error code.
- Faulty Engine Control Module (ECM)
- ECM harness is open or shorted
- ECM circuit poor electrical connection
- Shorted sensor on 5 volt circuit
Read more: http://www.autocodes.com/p0641_chevrolet.html
It's easier for them to throw parts at it than it is to take the time to do the actual diagnostic work.
Clearly they have not fixed the issue and they should not be charging you for parts as those did not resolve the issue. GM has a hotline for customers, I would call and file a complaint.
The dealer techs have plenty of resources including a tech hotline that can walk them through a difficult repair as well as a data base they can look at for suggestions.
- Faulty Engine Control Module (ECM)
- ECM harness is open or shorted
- ECM circuit poor electrical connection
- Shorted sensor on 5 volt circuit
Read more: http://www.autocodes.com/p0641_chevrolet.html
It's easier for them to throw parts at it than it is to take the time to do the actual diagnostic work.
Clearly they have not fixed the issue and they should not be charging you for parts as those did not resolve the issue. GM has a hotline for customers, I would call and file a complaint.
The dealer techs have plenty of resources including a tech hotline that can walk them through a difficult repair as well as a data base they can look at for suggestions.