DTC B1979 Dodge
PCM Serial Communications Malfunction
PCM Serial Communications Malfunction
Description
Key on, and the PCM did not receive 25 valid responses from the IPC system, condition met for 5-10 seconds during the CCM test.
Cause and Solution
Inspect the serial data line for an open or shorted conditionDetermine if the BCM (module) is pulling the data line downDetermine if the EBCM (module) is pulling the data line downTSB 61-65-67 contains a repair procedure for this code
Video Guide
Diagnostic Info
- DTC Code: B1979
- Brand: Dodge