DTC P2BA9-67: NOx Exceedence - Insufficient Reagent Quality - Signal incorrect after event: Action

WARNING: This page is about a different car, the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, and 2016 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.

Prioritised Checks to Perform
- Using the Jaguar Land Rover approved diagnostic equipment, measure DEF quality to check it conforms to specification
- Drain and refill DEF if not to specification
- Damaged/Removed SCR catalyst
- Deposits on front face of SCR catalyst
- Check diesel exhaust fluid injector for blockage/failure
- Deposits on mixer
- Check and install a new diesel exhaust fluid injector as required
Vehicle Conditions to enable DTC Logging Strategy
- On completion of the previous repair actions the following MUST be carried out
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest
- NOTE: Upon DTC(s) fault clear, the warning message changes to "No Restart Possible in XXX miles. Diesel Exhaust Fluid Dosing Malfunction"
- Using the Jaguar Land Rover approved diagnostic equipment run routine - To Reset Selective Catalyst Reductant (SCR) Quality Monitor
- NOTE: The routine resets the DEF quality values AND preconditions the monitoring for the driving procedure
- Using the Jaguar Land Rover approved diagnostic equipment run application - SCR Monitoring Application
- Drive vehicle at urban speeds until SCR catalyst warm and exhaust Nox sensors are active. Ensure the vehicle is not in DPF active regeneration and drive at urban speeds (50/60mph) and light load until warnings clear
- NOTE: These conditions ensure a rapid execution of the monitoring by keeping exhaust temperature under 300°C
- Eu_A/Eu_Bl/Eu_B2/NAS_B) This monitoring is lengthy to execute; 6 conversion efficiencies must be calculated by the powertrain control module to test the monitoring
- Eu_A/Eu_Bl/Eu_B2/NAS_B) If the current drive cycle exceeds 25 minutes, stop engine and restart drive cycle for 25 minutes which should heal the fault
- The 'inducement' warning clears automatically once the monitoring has executed. 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 DTCs
- NOTE: This clears the fault storage from P2BAE/P2BAF