DTC P1B05 Chevrolet
DC to DC Converter Control Module A Lost Communication With Hybrid Powertrain Control Module
DC to DC Converter Control Module A Lost Communication With Hybrid Powertrain Control Module
Description
The system voltage is between 9-16 volts. The vehicle power mode master requires serial data communication to occur.
Cause and Solution
The HPCM does not receive voltage from the SDGM on the wake up signal circuit.The wake up circuit between the SDGM and the APM is shorted to voltage.Any of the 4 PTLAN circuits connected to the HPCM are open.
Video Guide
Diagnostic Info
- DTC Code: P1B05
- Brand: Chevrolet