Code Definition

P1564 — Cruise control master switch fault

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Infiniti

About P1564

P1564 is a manufacturer-specific powertrain diagnostic trouble code recorded for Infiniti vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

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.

P1564 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

This code relates to the cruise control master switch, part of the automatic speed control system known on these Nissan and Infiniti vehicles as ASCD. The master switch turns the cruise control system on and off, and along with the set, resume, cancel and coast switches it signals the Engine Control Module or cruise control unit, often through a shared circuit where each button produces a distinct voltage. DTC P1564 is set when the module detects an improper or implausible signal from the cruise control switches, such as a voltage that matches no valid button or more than one input detected at...

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