Diesel Exhaust Fluid Supply And Metering System Malfunctions
WARNING: This page is about a different car, the 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
The OBD system monitors components and the functionality of the DEF supply and metering system. If a malfunction is detected a message center warning is displayed. If no action is taken to rectify the warning malfunction, this will eventually lead to a 'No engine restart' situation
| STAGES | CAUSE | WARNING | MESSAGE | DESCRIPTION |
|---|---|---|---|---|
| Stage 1 | Supply system or monitoring component malfunction | Amber symbol | No engine restart possible in 515mls/830km. Diesel Exhaust Fluid system malfunction | The DEF supply system or component used for monitoring is malfunctioning. The system must be checked by a Jaguar Land Rover service department |
| Stage 2 | Supply system or monitoring component malfunction | Red symbol | No engine restart possible. Diesel Exhaust Fluid system malfunction | The DEF supply system or component used for monitoring is malfunctioning. The system must be checked by a Jaguar Land Rover service department |
Diesel Exhaust Fluid Supply and Metering System Malfunctions
The following DEF supply and metering system malfunctions may trigger the message center warning system
- Pressure build up in the supply line
- Metering/injection time to closed loop
- Over pressure in supply line
- Under pressure in supply line
- Injection valve open circuit
- SCR system relay open circuit
- Solenoid pump(s) open circuit
- Combined temperature/level sensor open circuit
- Missing communication with upstream NOx sensor (NAS variants only)
- Missing communication with downstream NOx sensor