C0700 — Active Steering Module Communication
A communication fault between the chassis control module and the active steering module has been detected. Active steering varies the steering ratio with speed, and a fault disables this assistance and may store secondary codes in other modules.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Active steering module
- Communication bus
- Chassis control module
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Communication bus fault
- Active steering module failed
- Power supply or ground fault to module
Possible symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.