DTC U1121 BMW
Lost Communication With Power Management Battery Voltage
Lost Communication With Power Management Battery Voltage
Description
Key on for 800ms, and the DME detected that it has lost communication with the power management battery voltage during its initial startup for 40ms (2 message cycles). The Engine Control Module (DME) communicates with all databus-capable control modules v
Cause and Solution
DME has failed
Terminal resistance for CAN-bus are faulty
Video Guide
Diagnostic Info
- DTC Code: U1121
- Brand: BMW