P2EB3Throttle Valve Intake Air Pressure Sensor 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
- P2EB3 covers a throttle inlet pressure that is electrically fine but wrong. With the engine stopped, the pressure ahead of the throttle must equal manifold and barometric pressure; Ford checks this at key-up after at least 10 s off, allowing about 2.7 inHg between boost and manifold sensor. While running, GM compares its TIAP reading with an airflow model and fails it if the gap exceeds 30 kPa, reported as P0236. Nira Automotive's patent US5083434 shows why the value matters: the pressure drop across the throttle can replace the throttle angle when setting the boost target. No manufacturer documents P2EB3 publicly. Typical causes are a sensor drifting with age, a blocked or iced port, or a charge air leak that drags the model apart.
- What you may notice
- Check engine lamp on
- Pressure reading differs from manifold and barometric pressure with engine off
- Uneven boost or reduced power
- Likely causes
- LikelySensor offset or drift with age
- PossiblePressure port blocked by oil residue or ice
- PossibleLeak in the charge air path upsetting the model comparison
- RareContact resistance in the connector
- 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: €50 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.