What this warning usually means
The PCM has detected an SCR fault — commonly low reductant pressure, poor SCR efficiency or a NOx sensor problem.
On EcoBlue Transits the tank module and injector are frequent causes; on Rangers, sensor and heater faults are common.
Can the vehicle still start?
Yes until the counter reaches zero. If it's at zero and still running, keep it running only if safe, and contact us before switching off.
Vehicles that show this message
Ford Transit, Transit Custom, Transit Connect, Ranger and other EcoBlue diesels.
What we check on site
The technician confirms the right repair after testing. Many faults are fixed on site; some need a part ordered. Mobile call-out from £150 minimum. Final cost depends on the vehicle, location, diagnosis and work required.
- Read PCM codes and confirm software calibration
- Check tank module pressure and heater
- Dosing quantity test and injector inspection
- Upstream/downstream NOx sensor comparison
What to send us on WhatsApp
- Registration number
- Postcode or a location pin
- A photo of the exact warning, including any miles remaining
- Fault code if you have one
- Whether the vehicle currently starts
Related fault codes
- P20EE
- P20E8
- P204F
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