Powertrain, generic · Vehicle speed, idle control and auxiliary inputs

P05E0 Brake Pedal Position Sensor A/B Correlation

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

Brake-by-wire and hybrid systems measure brake pedal travel with a two-channel sensor; the channels often run in opposite directions (Toyota RAV4 hybrid 2024–25: one rises from about 1 V, the other falls from about 4 V). P05E0 means both channels are electrically fine but no longer match each other. Toyota sets it when the relationship is invalid for 0.2 s and lights the lamp at once; Mitsubishi's Outlander PHEV adds the regenerative brake warning. Braking falls back to plain hydraulics, so the pedal may feel hard and regeneration is off. GM notes for the CT6, Bolt, Malibu and Volt 2016–18 that the code can also appear without a defect if the driver rests a foot lightly on the brake (1.8–5.6 mm travel) for 60 s while accelerating. Single-channel faults are P057A–P057E and P05DB–P05DF.

Likely causes

Pedal travel sensor faulty internally (channels drift apart)
Contact resistance or corrosion in the connector or harness of one channel
Sensor not calibrated after replacement or pedal work
Foot resting lightly on the brake while accelerating (GM)
Brake or hybrid control module faulty

Symptoms

  • Check engine light or service warning
  • Brake, ABS or stability warning lamp
  • Hard brake pedal, reduced brake assist
  • Regenerative braking disabled (hybrid/PHEV)

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–600
Time0.5–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

brake pedal position sensorsensor wiringbrake control module

Related codes

P057AP057BP057CP05DBP05DDP0504

References: law.cornell.edu, estimateca.mymitchell.com, mitsubishitechinfo.com, mitsubishitechinfo.com.