garajizOBD-II code · generic
U3021
Control Module Wake-up Circuit B Performance
- System
- U — In-vehicle network
- Severity
- Moderate (3/5)
- Can I keep driving?
- Drive with caution
What does U3021 mean?
U3021 is defined as “Control Module Wake-up Circuit B Performance”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Related codes
- U3020Control Module Wake-up Circuit B High
- U3022Ignition Input Accessory/Off
- U301FControl Module Wake-up Circuit B Low
- U3023Control Module Input Power Circuit A - Ignition Input On/Start Circuit Correlation
- U301EControl Module Wake-up Circuit B/Open
- U3024Control Module Input Power Circuit B - Ignition Input On/Start Circuit Correlation
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.