garajizOBD-II code · manufacturer-specific
C1021
CAN Communication With EA/CC/ISC Control Module Interrupted
- System
- C — Chassis (ABS / brakes / suspension)
- Severity
- Low (1/5)
- Can I keep driving?
- Usually safe to drive
What does C1021 mean?
C1021 is defined as “CAN Communication With EA/CC/ISC Control Module Interrupted”.
You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Mercedes: CAN Communication With EA/CC/ISC Control Module Interrupted
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.