Cruise Control Vacuum Control Circuit Open
The vacuum-control solenoid of a vacuum-driven cruise servo (older systems) has an open control circuit - the servo cannot pull the throttle.
Affected components
- Cruise vacuum solenoid
Common causes
- High likelihood: Open in solenoid or harness
- Low likelihood: Pin pushed back out of connector body
- Low likelihood: Cracked solder joint inside the module or sensor
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.