DTC U0155 Cadillac
ECU Malfunction Watch Dog failure
ECU Malfunction Watch Dog failure
Description
The microprocessor runs a diagnostic program to detect an internal fault when power up is commanded. The only requirements are voltage and ground.
Cause and Solution
The control module detects an internal write malfunction.The control module detects an internal checksum malfunction.
Video Guide
Diagnostic Info
- DTC Code: U0155
- Brand: Cadillac