P2CECParticulate Filter Pressure Sensor D Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2CEC is set when an analog filter pressure sensor D delivers less voltage than it can in normal service. In Ford's 2024–25 petrol summary, the only public source using sensor D, the limit is 0.3 V for 5 s, checked continuously alongside the A, B and C sensors of the gasoline particulate filters. Practically this means a signal shorted to ground, a 5 V supply that has dropped out, or an open signal line that the module pulls down. A shared reference fault would bring other sensor codes up together. GM does not use sensor D; its C sensor counterpart P2CE7 shows a similar ground-short logic on 2025 diesels. CARB requires out-of-range checks on such inputs. The pressure drop across that bank's filter is then unknown. Too high is P2CED, intermittent P2CEE.
- What you may notice
- Warning lamp on
- Live data shows sensor D at minimum
- Further 5 V sensor codes if the shared supply is affected
- Likely causes
- LikelySignal wire of sensor D shorted to ground
- Possible5 V reference to sensor D open or pulled down
- PossibleSensor D failed with output stuck low
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.