OBD-II code · generic
U063B
Lost Communication With Coolant Bypass Valve Actuator A
- System
- U — In-vehicle network
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does U063B mean?
U063B is defined as “Lost Communication With Coolant Bypass Valve Actuator A”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Related codes
- U063ALost Communication With Hybrid/EV Electronics Coolant Temperature Sensor C
- U063CLost Communication With Coolant Bypass Valve Actuator B
- U0639Lost Communication With Hybrid/EV Electronics Coolant Temperature Sensor B
- U063DLost Communication With Hybrid/EV Electronics Coolant Pump A
- U0638Lost Communication With Hybrid/EV Electronics Coolant Temperature Sensor A
- U063ELost Communication With Exhaust Heat Exchanger Bypass Valve Actuator A
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.