OBD-II code · Network
U014A Lost Communication With Battery Energy Control Module C
ECU lost CAN communication with battery energy control module C (hybrid/EV high-voltage battery management).
Is it safe to drive with U014A?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyModule unpowered
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–8 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Battery Energy Module C, Can Bus
Related codes
- U014CLost Communication With Battery Energy Control Module D
- U0147Lost Communication with Gateway "B"
- U0148Lost Communication with Body Control Module "C"
- U0149Lost Communication with Door Driver Module
- U014BLost Communication With Hybrid/EV Battery Inductive Charging Module
- U014DLost Communication with Mirror Control Module B
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.