What causes a P0525 code?

P0525 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a P0525 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0525 active.

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBD-II

P0525

Cruise Control Servo Control Circuit Range/Performance

What it means

The Engine Control Module (ECM) has detected a voltage signal from the cruise control servo circuit that is outside of the expected operating range. This typically indicates a mismatch between the commanded position and the actual feedback in systems utilizing electronic cruise control actuators.