Code Definition

P0574 — Cruise Control System Vehicle Speed Too High

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

About P0574

P0574 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 P0574 is stored, the module has detected a signal or supply voltage higher 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 P0574 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 P0574 fault code is set when the Engine Control Module (ECM) detects that the vehicle speed is too high while the cruise control system is engaged. This code indicates that the vehicle is exceeding a speed threshold deemed safe or appropriate for cruise control operation. The cruise control system is designed to maintain a set speed for comfort and efficiency, but it also incorporates safety measures to prevent the vehicle from exceeding certain speeds. If the vehicle's speed surpasses this limit while cruise control is active, the ECM may set this code and potentially deactivate the cruis...

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