Code Definition

P0564 — Cruise Control Multifunction Switch Signal Error - Circuit A

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0564

P0564 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0564 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0564 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0564 fault code is set when the Engine Control Module (ECM) detects a signal error in Circuit A of the cruise control multifunction switch. This switch is an integral component of the cruise control system in vehicles, typically encompassing various functions like set, resume, accelerate, coast, and cancel. The multifunction switch sends signals to the ECM to control these different aspects of the cruise control operation. A signal error in Circuit A of this switch suggests an issue with the switch's ability to send the correct signals to the ECM. This can lead to malfunctions in the crui...

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