What does code P1577 mean?

Q: What does code P1577 mean?

Pedal Position Sensor Disagreement Between Sensors. P1577 on Ford vehicles means the powertrain control module (PCM) has detected a disagreement between the two independent signals produced by the accelerator pedal position sensor assembly. The PCM compares the two voltages, which should track each other in a predictable ratio, and sets this code when they fall outside the allowed tolerance for a calibrated amount of time.

DTC codes / Ford codes / P1577

P1577 · FordPedal Position Sensor Disagreement Between Sensors

P1577 on Ford vehicles means the powertrain control module (PCM) has detected a disagreement between the two independent signals produced by the accelerator pedal position sensor assembly. The PCM compares the two voltages, which should track each other in a predictable ratio, and sets this code when they fall outside the allowed tolerance for a calibrated amount of time.

SystemPowertrain

Code typeFord specific

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for Ford vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.