OBD-II code · Network
U0434 Invalid Data Received From Active Roll Control Module
A receiving module detected implausible data from the active roll control module (active anti-roll bars). Hydraulic/electric actuator command vs. actual values fail plausibility checks and are rejected.
Is it safe to drive with U0434?
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
- Active Roll Module
Related codes
- U0431Invalid Data Received from Body Control Module
- U0432Invalid Data Received from 4-Wheel Drive Clutch Control Module
- U0433Invalid Data Received From Front Distance Range Sensor — Single Sensor or Center
- U0435Invalid Data Received From Power Steering Control Module — Rear
- U0436Invalid Data Received From Differential Control Module — Front
- U0437Invalid Data Received From Differential Control Module — Rear
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.