P05DDBrake Pedal Position Sensor B Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Brake-by-wire and hybrid systems use a dual-channel pedal travel sensor; channel B runs opposite to A at Toyota (3.6–4.4 V at rest, falling when pressed), so a common fault of both channels shows up. It feeds brake assist and regenerative blending; CARB requires inputs used by other diagnoses to be monitored. A channel fault blocks the A/B correlation P05E0 and usually limits brake assist or regeneration. P05DD means channel B is below its valid range – signal or shared 5 V reference shorted to ground (then sensor A reports as well). Mitsubishi's 2022 Outlander PHEV sets it with the regeneration warning light and the check engine light; for channel A it uses below 0.2 V for 0.5 s.
- What you may notice
- Brake or regeneration warning light
- Check engine light
- Regeneration or brake assist reduced, pedal feel changed
- Likely causes
- LikelySignal line B shorted to ground (harness at the pedal box)
- Possible5 V reference shorted to ground (also sensor A code)
- PossiblePedal sensor faulty
- RareBrake or hybrid module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · 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.