DTC P2BA9-67: NOx Exceedence - Insufficient Reagent Quality - Signal incorrect after event: Action
WARNING: This page is about a different variant/trim than selected.
- 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
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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
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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
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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
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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
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NOTE: This clears the fault storage from P2BAE/P2BAF