Battery voltage - Electronic circuit fault
â–¶ How to fix
Check the wiring of UB_1 and UB_2 and repair it, if needed. Check the connectors of ECU. If after repairing the power lines or connectors the fault still exists, replace the ECU.
What you'll see
No driver-visible symptom recorded.
System reaction
No restrictions. Yellow warning lamp.
Diagnostic depth
Detection
The fault is set, if it is indicated by the digital feedback signals, that any or both of the UB power connections disconnected for more than 100 ms.
Possible cause
Power line UB_1 or UB_2 or both power lines disconnected