P0567 is set when the Powertrain Control Module (PCM) detects an abnormal voltage signal from the cruise control resume switch. The resume function allows the driver to return to a previously set cruising speed after releasing the accelerator. This code indicates the PCM cannot reliably read the resume signal circuit, which may prevent cruise control from functioning properly.
The resume button on the steering wheel or column has worn out, stuck, or failed contacts, preventing a clean signal to the PCM.
The wiring harness to the cruise control switches may be damaged, chafed, or corroded at connectors, causing intermittent or no signal.
The clockspring (spiral cable) that maintains electrical connection between the steering wheel and column is worn or broken, breaking the signal path.
The cruise control circuit fuse may be blown or the related relay may have failed, cutting power to the system.
Safety interlock switches that deactivate cruise control when braking or pressing the clutch may be out of adjustment or faulty, affecting the circuit.
The PCM itself may have an internal circuit failure affecting cruise control signal processing, but this is the least likely cause and should be diagnosed last.
No. The PCM is rarely the cause of P0567. In the vast majority of cases, the problem is the resume switch, wiring, clockspring, or related fuses. PCM replacement is often suggested unnecessarily and should be the absolute last thing to check after all other components have been verified.
Yes, the vehicle is mechanically safe to drive. However, cruise control will be inoperative, and the Check Engine light will remain on until the issue is diagnosed and repaired.
The brake switch is a possible secondary cause because it shares the cruise control safety circuit. If the brake switch is misadjusted or failing, it can cause the system to disable cruise control, which may trigger related codes. However, the resume switch itself is the more direct cause to investigate first.