P05E0Brake Pedal Position Sensor A/B Correlation
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Check engine light or service warning
- Brake, ABS or stability warning lamp
- Hard brake pedal, reduced brake assist
- Regenerative braking disabled (hybrid/PHEV)
- Likely causes
- LikelyPedal travel sensor faulty internally (channels drift apart)
- PossibleContact resistance or corrosion in the connector or harness of one channel
- PossibleSensor not calibrated after replacement or pedal work
- PossibleFoot resting lightly on the brake while accelerating (GM)
- RareBrake or hybrid control module faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.