What causes a P0568 code?

P0568 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 P0568 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0568 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.

OBDIY

OBD-II

P0568

P0568 - Cruise Control Set Signal Malfunction

What it means

The Engine Control Module (ECM) detects an invalid or out-of-range voltage signal from the cruise control 'Set' switch circuit. This fault prevents the cruise control system from engaging and can sometimes affect high-idle functions.