OBD-II code · Network
U049C Invalid Data Received From Battery Charger Control Module A
A receiving module detected implausible data from battery charger control module A (on-board AC charger). Charge current, voltage or grid sync values fail plausibility checks and are rejected.
Is it safe to drive with U049C?
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 Charger Module A
Related codes
- U04BEInvalid Data Received From Battery Charger Control Module B
- U057BInvalid Data Received From Battery Charger Control Module C
- U057CInvalid Data Received From Battery Charger Control Module D
- U0499Invalid Data Received From Telematic Control Module
- U049AInvalid Data Received From Door Control Module A
- U049BInvalid Data Received From Tachograph Module
- U049DInvalid Data Received From Glow Plug Control Module 2
- U049EInvalid Data Received From Direct Ozone Reduction Catalyst Temperature Sensor
- U049FInvalid Data Received From Transmission Range Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.