P0566 Code - Cruise Control Off Signal Malfunction

What Does P0566 Mean?

OBD-II Code Cruise control will not operate is defined as a Cruise Control "Off" Signal

The Cruise Control System is controlled by the Body Control Module. The Body Control Module monitors driver inputs to the cruise control system and sends that request to the engine computer (PCM). If the body control module detects an invalid input from the cruise control "Off" Switch, code P056 will be set.

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What are the common causes of P0566 ?

The most likely cause of this code setting condition is a failed cruise control switch. Shorted or open circuitry in the cruise control buttons is common due to the presence of spilled liquids. Liquid spilled onto cruise control components has proven problematic in the past. Other causes may include shorted or open wiring, damaged or corroded connectors, and blown fuses (although a blown fuse is usually a reaction to a more severe problem).



How do you troubleshoot P0566 ?

There are many ways that a technician can address a P0566 code detection. They include:
Replacing the failed cruise control switch.
Repairing any short circuits or open circuits in the cruise control buttons.
Repairing shorted or open electrical wiring within the circuitry.
Repairing damaged cruise control system connectors.
Replacing blown fuses, and repairing the underlying issue that caused the blown fuse.

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