OBD-II code · Network
U0427 Invalid Data Received from Vehicle Security Control Module
The vehicle security controller delivers data that does not pass plausibility checks. Alarm system or remote unlocking can behave erratically.
Is it safe to drive with U0427?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- PossibleSecurity module failed
- 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
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Vehicle Security Module
Related codes
- U0409Invalid Data Received from Vehicle Security Control Module
- U0424Invalid Data Received from HVAC Control Module
- U0425Invalid Data Received from Vehicle Immobilizer Control Module
- U0426Invalid Data Received from Vehicle Immobiliser Control Module
- U0428Invalid Data Received from Steering Angle Sensor Module
- U0429Invalid Data Received from Steering Wheel Angle Sensor
- U042AInvalid Data Received From V2X Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.