garajizOBD-II code · manufacturer-specific
U1021
SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch
- System
- U — In-vehicle network
- Severity
- Low (1/5)
- Can I keep driving?
- Usually safe to drive
What does U1021 mean?
U1021 is defined as “SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch”.
You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.
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This page is general information; an exact diagnosis needs measurements and a technician’s check.