What does code P1051 mean?

Q: What does code P1051 mean?

Brake Switch Signal Missing or Improper. P1051 on Ford vehicles means the powertrain control module (PCM) is not receiving a valid brake pedal switch signal, so it cannot confirm when the brake pedal is pressed or released. The PCM expects a specific voltage pattern from the brake switch circuit and flags this code when that pattern is missing, stuck, or implausible.

DTC codes / Ford codes / P1051

P1051 · FordBrake Switch Signal Missing or Improper

P1051 on Ford vehicles means the powertrain control module (PCM) is not receiving a valid brake pedal switch signal, so it cannot confirm when the brake pedal is pressed or released. The PCM expects a specific voltage pattern from the brake switch circuit and flags this code when that pattern is missing, stuck, or implausible.

SystemPowertrain

Code typeFord specific

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

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