P0582 Cruise Control Vacuum Control Circuit/Open

P0582 indicates an open cruise control vacuum control circuit. On vacuum-operated systems, the controller does not see expected continuity or response from the vacuum control solenoid path.

Code details

Generic OBD-II · P0

System: Speed / Idle
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not replace cruise switches when the fault points to the vacuum control solenoid circuit.

Symptoms of P0582

Unstable, high, or low idle, or stalling.
Erratic speedometer, cruise-control, or shift behaviour.
Check-engine light with a hesitation or surge.

Common causes of P0582

A dirty throttle body, idle-control valve, or throttle-position sensor.
A failing vehicle-speed or wheel-speed sensor, or its wiring.
Vacuum leaks or a related sensor forcing the idle/speed strategy.

Useful checks before replacing parts

Check vacuum control solenoid command, supply voltage, control continuity, solenoid resistance, cruise enable status, and freeze-frame data.
Inspect vacuum hoses, servo diaphragm, solenoid connector, wiring opens, fuse feeds, grounds, and vacuum source integrity.
Command the vacuum control circuit and confirm electrical response plus servo vacuum movement where service procedures allow.

Related OBD-II codes

These nearby speed / idle entries can help compare wording and pin down the fault area.