OBD-II code · Network
U0425 Invalid Data Received from Vehicle Immobilizer Control Module
The ECU receives an authorisation message from the immobilizer that is corrupted or out of range. Engine start is blocked.
Is it safe to drive with U0425?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyRolling code out of sync
- 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
- 0.3–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Immobilizer Module
Related codes
- U0408Invalid Data Received from Vehicle Immobilizer Control Module
- U0422Invalid Data Received from Body Control Module
- U0423Invalid Data Received from Information Center
- U0424Invalid Data Received from HVAC Control Module
- U0426Invalid Data Received from Vehicle Immobiliser Control Module
- U0427Invalid Data Received from Vehicle Security Control Module
- U0428Invalid Data Received from Steering Angle Sensor Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.