P2CD7Turbocharger/Supercharger Boost Sensor D Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- With P2CD7 the boost sensor D signal is electrically valid but does not fit the other pressure readings or the engine's air model. No manufacturer documents this code publicly; the checks used for sensor A show what it would cover. Ford's 2024 petrol summary compares barometric, manifold and boost pressure at key-up after at least 10 s off, allowing roughly 2.1 to 2.7 inHg between pairs, and repeats a two-way comparison at low throttle below 1,500 rpm. The GM-designed Saab 2.0 turbo expects 50 to 115 kPa with the engine stopped and treats deviations as a two-trip Type B fault. Typical reasons are a blocked or leaking pressure tap, oil in the sensor port and drift. Unlike P2CD6, P2CD8 and P2CD9, wiring is rarely to blame here. Expect a lamp and reduced boost.
- What you may notice
- Warning lamp on
- Boost limited, weaker acceleration
- Scan tool shows sensor D value differing from barometric pressure with the engine off
- Likely causes
- LikelySensor D drifted or contaminated with oil
- PossibleLeaking seal or blocked port at the sensor's measuring point
- PossibleCharge air leak in the section monitored by sensor D
- RareSensor with the wrong pressure range fitted
- 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: €40 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.