Description
Common problems
- Internal corrosion or water ingress
- Short circuits or internal electrical faults
- Crystallisation of AdBlue fluid around the injector or level sensors
- Faulty temperature, level, or quality sensors within the tank
- P20E9 00 Fault Code – AdBlue/DEF Fluid Pressure: Drift Upwards
Citroën C4 Cactus AdBlue (DEF) System Repair Service
AdBlue was introduced with the Euro 6 emissions regulations to help cut the harmful nitrogen-oxide (NOx) output of diesel engines.
When the system develops a fault, the dashboard typically shows an “Emission Control Fault” message and illuminates the engine warning lamp. If left unresolved, the vehicle can drop into limp-home mode or display a mileage countdown after which it will refuse to restart.
Commonly Affected Part Numbers:
9818703780, 9812914780, 9808559680, 1682620380, 16 826 203 80, 98 129 147 80, 98 187 037 80, 1682615880
Do you particularly need help fast? Call us on 01708 206343 to speak with our team.
Prefer email? Send us a message and we’ll get back to you quickly.
You can also reach us instantly via WhatsApp here.
