P0470Exhaust Pressure Sensor A Circuit
- 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
- The exhaust pressure sensor measures the pressure ahead of the turbine or in the manifold (Ford: turbine upstream pressure, Cummins: exhaust manifold pressure, older Ford diesels: EBP). The module uses it to calculate EGR flow, to control the variable turbine and engine braking, and to protect against overpressure. P0470 is the general circuit fault of sensor A. Ford's 6.7-litre diesel with a digital SENT sensor sets it when the sensor reports an error status or its raw data leave their limits for 5 s; a loss of communication is U0691 instead. Analogue sensors use it for an open or unspecified circuit fault where low and high are not separated.
- What you may notice
- Check engine light on
- EGR and turbo control on a substitute value, possibly reduced power
- Exhaust brake or warm-up flap without function
- Likely causes
- LikelySensor faulty internally
- PossibleConnector corroded or heat-damaged near the manifold
- PossibleBroken or chafed signal or 5 V wire
- RareEngine module or software
- 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: €80 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.