Error code
OBD2 U0111
OBD2U0111
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Lost Communication With Battery Energy Control Module 'A'.
Severity
moderateThe vehicle can usually be driven, but performance and fuel efficiency may suffer.
Summary
U0111 indicates that there is no communication between the vehicle's onboard computer system and the Battery Energy Control Module (BECM) 'A'. This issue affects the data bus related to the BECM.
Common Causes
- Faulty or disconnected wiring harness
- Corroded connectors on the battery energy control module
Fixes
- Inspect and repair any damaged wiring or connectors related to the battery energy control module.
FAQ
What should I do if my car shows U0111?
Check for any loose or corroded connections near the Battery Energy Control Module. If issues are found, repair them or seek professional help.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- U0100Lost Communication With ECM/PCM A
- U0101Lost Communication with TCM
- U0102Lost Communication with Transfer Case Control Module
- U0103Lost Communication With Gear Shift Module
- U0104Lost Communication With Cruise Control Module
- U0105Lost Communication With Fuel Injector Control Module
- U0106Lost Communication With Glow Plug Control Module
- U0107Lost Communication With Throttle Actuator Control Module
- U0108Lost Communication With Alternative Fuel Control Module
- U0109Lost Communication With Fuel Pump Control Module
- U0110Lost Communication With Drive Motor Control Module
- U0112Lost Communication With Battery Energy Control Module 'B'