OBD-II code · Network
U044B Invalid Data Received From Battery Energy Control Module C
A receiving module detected implausible data from battery energy control module C. SoC, SoH, current or voltage values fail plausibility checks against other inputs and are rejected.
Is it safe to drive with U044B?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyModule internal fault or sensor input drift
- PossibleSoftware version mismatch after replacement
- Less likelyGateway module routing CAN messages incorrectly
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
- 1–5 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Battery Energy Module C
Related codes
- U0448Invalid Data Received from Gateway B
- U0449Invalid Data Received From Serial Data Gateway Module C
- U044AInvalid Data Received From Serial Data Gateway Module D
- U044CInvalid Data Received From Hybrid/EV Battery Inductive Charging Module
- U044DInvalid Data Received From Generator B Control Module
- U044FInvalid Data Received From Mirror Control Module B
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.