DTC P1220 GMC
Data Circuit Malfunction
Data Circuit Malfunction
Description
Key on, and the PCM detected the SCP was invalid, or that it was missing data from the Anti-Theft System during the CCM test.
Cause and Solution
SCP data bus to other controller(s) is open or shorted to groundAnti-Theft System controller is damaged or has failedPCM has failed
Video Guide
Diagnostic Info
- DTC Code: P1220
- Brand: GMC