DTC P1689 Isuzu
Lost Communication With DC DC Converter Control Module A
Lost Communication With DC DC Converter Control Module A
Description
The PCM continuously monitors the controller area network (CAN) for messages from the DC to DC convertor control module. This DTC sets when the PCM does not receive the DC to DC convertor control module message within the defined amount of time.
Cause and Solution
Communication error
Diagnosis:
Check for other PCM DTCs or PCM related symptoms. Diagnose all other PCM DTCs or PCM related symptoms first.
Video Guide
Diagnostic Info
- DTC Code: P1689
- Brand: Isuzu