OBD-II code · Network
U041A Invalid Data Received From Battery Isolation/Voltage Stabilization Control Module
A receiving module detected implausible data from the battery isolation / voltage stabilization module (typical in start/stop systems). Switching state or stabilizer voltage values fail plausibility checks and are rejected.
Is it safe to drive with U041A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
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
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Battery Isolation Module
Related codes
- U0417Invalid Data Received from Park Assist Control Module
- U0418Invalid Data Received from Brake System Control Module
- U0419Invalid Data Received from Brake System Control Module
- U041BInvalid Data Received From Exhaust Gas Sensor Module A
- U041CInvalid Data Received From Rocker Arm Control Module A
- U041DInvalid Data Received From Rocker Arm Control Module B
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.