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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!


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