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How to fix a Chevrolet P305F Code: Dual Battery Control Module Performance
Dual Battery Control Module: amzn.to/48wD42R
Service Information
The engine control module (ECM) identifies that the voltage during engine crank at the ignition input (Auxiliary battery voltage) of the ECM is below 8.90 volts for 2 out of 3 start events.
Possible Causes of a Chevy P305F Code:
Aux Battery (Most Common Cause)
Main Battery
Bad Connections
Blown Fuse
Dual Battery Control Module (DBCM)
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