OBD-II code · Network
U0439 Invalid Data Received From All Terrain Control Module
A receiving module detected implausible data from the all-terrain (drive mode) control module. Selected mode, throttle map or stability target values fail plausibility checks and are rejected.
Is it safe to drive with U0439?
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
- All Terrain Module
Related codes
- U0436Invalid Data Received From Differential Control Module — Front
- U0437Invalid Data Received From Differential Control Module — Rear
- U0438Invalid Data Received from Park Brake Control Module
- U043AInvalid Data Received From Suspension Control Module B
- U043BInvalid Data Received From Front Distance Range Sensor — Left
- U043CInvalid Data Received From Front Distance Range Sensor — Right
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.