Code Definition

P0592 — Cruise control multifunction switch signal low - Circuit B

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

About P0592

P0592 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 P0592 is stored, the module has detected a signal or supply voltage lower than the expected operating range.

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 P0592 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

This fault code indicates that the engine control module (ECM) or the body control module (BCM) has detected a lower than expected voltage signal from Circuit B of the cruise control multifunction switch. This switch is a key component in controlling the cruise control system, allowing the driver to set, adjust, and turn off the cruise control. A low signal in Circuit B suggests an electrical issue such as a short to ground or an open circuit, which can lead to malfunctioning or inoperative cruise control functions.

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