Code Definition

P057D — Brake Pedal Position Sensor Voltage High

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

About P057D

P057D 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 P057D is stored, the module has detected a signal or supply voltage higher than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

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 P057D 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 P057D fault code is set when the Engine Control Module (ECM) detects a higher than expected voltage from the brake pedal position sensor. This sensor is integral to the functioning of various vehicle systems by providing information on the position of the brake pedal. It influences the operation of systems such as cruise control, stability control, and anti-lock braking systems (ABS). A high voltage signal from the brake pedal position sensor can suggest an electrical issue like a short to power, a malfunctioning sensor, or problems with the wiring or connectors. This abnormal signal can l...

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