OBD-II code · Network
U02C0 Lost Communication With Active Radiator Air Flow Control Module A
The vehicle bus reports loss of communication with active radiator air flow control module A. Active grille shutters and electric cooling-fan staging on this circuit cannot be commanded.
Is it safe to drive with U02C0?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBus wiring open or shorted
- PossibleModule without power or ground
- PossibleModule failed
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
- Active Radiator Airflow Module A, Vehicle Bus Wiring
Related codes
- U02BDLost Communication With Night Vision Control Module
- U02BELost Communication With Trailer Backup Assist Control Module
- U02BFLost Communication With Interior Lighting Control Module B
- U02C1Lost Communication With Hybrid/EV Electronics Coolant Pump C
- U0300Internal Control Module Software Incompatibility
- U0301Software Incompatibility with ECM/PCM
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.