P0525

Cruise Control Servo Control Circuit Range/Performance

Q: Is it safe to drive with P0525?

Yes. This only disables cruise control — the engine, brakes, and normal acceleration are unaffected. Fix it when convenient to get cruise working and clear the light.

Q: Can I just clear P0525?

It returns once the ECM re-checks the servo circuit unless the servo or its wiring is repaired.

Cruise control Generic OBD-II Medium

What it means

P0525 means the control circuit for the cruise control servo (the actuator that adjusts the throttle to hold your set speed) is reading outside its expected range. The result is cruise control that won't engage or won't maintain speed, usually from a faulty servo or a wiring problem in its circuit. Normal driving is unaffected, so this is a convenience-feature and check-engine-light issue rather than a safety one.

Medium

Can I keep driving? Safe to keep driving — only cruise control is affected, so the engine and normal driving are unchanged.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Cruise control won't engage or won't hold a set speed
Cruise control drops out unexpectedly
Check-engine light on
No change to normal (non-cruise) driving

Common causes

Most likely first

Faulty cruise control servo/actuatorLikely
Wiring or connector fault in the servo control circuitCommon
Faulty cruise control module or switchCommon
Engine control module (ECM) fault (rare)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and confirm the code with a scan tool.
Verify cruise control is inoperative and check the on/off and set switches.
Inspect the servo's connector and wiring for opens, shorts, or corrosion.
Test the servo's control signal and resistance against spec.
Replace the servo if it fails; treat the module/ECM as a last resort. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0525?+

Yes. This only disables cruise control — the engine, brakes, and normal acceleration are unaffected. Fix it when convenient to get cruise working and clear the light.

Can I just clear P0525?+

It returns once the ECM re-checks the servo circuit unless the servo or its wiring is repaired.

Read & clear P0525 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX