Cruise Control System Vehicle Speed Too High
The cruise control sees actual vehicle speed exceed the set-speed by more than the diagnostic margin (typically going downhill or with throttle override). Persistent oversize means the system cannot bring speed down - either an actuator fault, brake-blending failure, or driver kick-down stuck.
Affected components
- Cruise control servo
- Brake blending
Common causes
- High likelihood: Cruise servo stuck driving throttle
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
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.