P2D15Exhaust Flow Control Valve C Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2D15 is set when the drive wire of flap C carries too high a level, so the output stage cannot pull it down as commanded. Either the wire touches something live, or the electronics inside the actuator push voltage back onto it. No manufacturer publishes P2D15. Analogies exist for flaps A and B: in its 2024 OBD summary Ford books a short to power as subtype 12 of its continuous driver check, which runs for 5 seconds, while the GM 23OBDG07 tables flag the same fault on an exhaust valve PWM line as P2BFA, with more than 9 V supply once 4 seconds have passed, MIL after the second trip. CARB requires such circuit checks on output devices. A flap that keeps moving or sits fully open although nothing was requested fits this code better than P2D14.
- What you may notice
- Check engine light
- Flap C open or moving without being commanded
- Exhaust sound modes unavailable
- Likely causes
- LikelyControl wire shorted to a voltage-carrying circuit
- PossibleDefective electronics in the valve C actuator feeding voltage back
- RareOutput stage in the control module stuck high
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.