P0525Cruise Control Servo Control Circuit Range/Performance
- Generic OBD-II code · Powertrain
- How the car detects it
- P0525 concerns vehicles with a separate cruise control servo – a vacuum or electric actuator on the throttle cable driven by the engine module: the control circuit is electrically sound, but the response does not match the command. With electronic throttle the engine module controls the throttle itself, so the code hardly applies there. No manufacturer document available to us uses P0525. CARB names cruise control as the example of an emission-neutral diagnosis: switching it off as the default reaction suffices, so usually no warning lamp.
- What you may notice
- Cruise control inoperative or switches off
- Speed not held or fluctuating
- Usually no check engine light
- Likely causes
- PossibleServo worn or sticking, cable misadjusted
- PossibleVacuum leak at hose or diaphragm (vacuum servo)
- PossibleWiring, connector or fuse to the servo
- RareBrake or clutch switch interrupting the servo release
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.