DTC P20E8-84: Reductant Pressure Too Low - Signal below allowable range: Action

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.

NOTE: A fault clear is NOT sufficient to clear the vehicle 'inducement' system warnings. The 'inducement' warnings automatically clear ONLY upon confirmation of the repair by the vehicle OBD system. The monitoring MUST be completed. The pressure build-up normally occurs when the selective catalyst reduction catalytic converter temperature exceeds 150 °C

Prioritized Checks to Perform
- Check diesel exhaust fluid line for leakage
- Using the Jaguar Land Rover approved diagnostic equipment, complete diagnostic routine 0x4092
- Refer to the electrical circuit diagrams and check the diesel exhaust fluid tank module circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Contact retailer technical support
Vehicle Conditions to Enable DTC Logging Strategy
- DEF system pressurized
- On completion of the previous repair actions the following MUST be completed
- Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s) and retest
- NOTE: The engine MIL is OFF (when engine ON)
- Drive vehicle at urban speeds approximately 50mph
- NOTE: These conditions make sure that the selective catalyst reduction catalytic converter temperature exceeds 150 °C at which the system pressure build up is initiated
- The monitoring is completed within 15 minutes of the driving cycle
- The 'inducement' warning clears automatically when the monitoring has completed. This terminates the drive cycle
- NOTE: If the engine MIL shows during the driving cycle: the malfunction has re-occurred
- Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s)
- NOTE: This clears the fault storage from P2BAE/P2BAF