Cruise Control Servo Control Circuit Range or Performance
The control circuit to the cruise control servo (vacuum or electric actuator that holds throttle position) shows feedback in plausible range yet inconsistent with the commanded action - servo slow, sticking, or supply weak.
Affected components
- Cruise control servo
Common causes
- High likelihood: Servo response slow due to wear
- Medium likelihood: Vacuum supply low (vacuum servo)
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.