P0641 Code?!

[Pishner03]

1.5 FWD with P0641 code?!

The P0641 code in a Chevy 2018 Equinox indicates a voltage problem in the 5-volt reference circuit of the engine control module
(ECM) or powertrain control module (PCM):

Any ideas? One minute will start and run good next time will not even start!

Replaced ECM and all Sensors on that 5 volt circuit. Still getting Map Sensor codes.

Replace Whole wiring harness????

The car was in a wreck, December 2023. Damage to driver side front. Ran perfect for 6 months then started electric problems. I really don’t know if it could be related or not. Bought a new battery last fall.

At a loss here! Ugh!

 

[Moonwink]

The computers in these car require the batteries be in VERY good condition. Have the battery checked and load tested before doing much more. If it's at all suspect, replace it.

 

[Pishner03]

The computers in these car require the batteries be in VERY good condition. Have the battery checked and load tested before doing much more. If it's at all suspect, replace it.

Will check it out again and see what it does.