P0420 on the 2018 Land Rover Range Rover Sport
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| SSM74475 | 2019-08-19. Service bulletin. Customer reports that the Malfunction Indicator Lamp (MIL) is illuminated on the Instrument Cluster (IC). Diagnostic Trouble Code(s) related to Catalyst System Efficiency P0420-00 and/or P0430-00 are stored in the Powertrain Control Module (PCM). NOTE ? the concern detailed in this SSM is only applicable to Range Rover Sport vehicles (SVR) 2018 Model Year fitted with the V8 S/C 5.0L petrol engine (575PS) |
|---|---|
| SSM73866 | 2018-11-13. Service bulletin. Issue: A Technician will find the following Diagnostic Trouble Code (DTC) relevant to catalyst system efficiency, P0420-00 stored in the Powertrain Control Module (PCM). The Malfunction Indicator Lamp (MIL) could also be illuminated. |
| SSM73866 | 2018-10-29. Service bulletin. Issue: A Technician will find the following Diagnostic Trouble Code (DTC) relevant to catalyst system efficiency, P0420-00 stored in the Powertrain Control Module (PCM). The Malfunction Indicator Lamp (MIL) could also be illuminated. Affected vehicle vin ranges as follows ? Range Rover Sport (LW) AJ200P PHEV ? 146054 onwards. Range Rover (LG) AJ200P PHEV ? 343646 onwards |
| SSM73866 | 2018-10-15. Service bulletin. Issue: A Technician will find the following Diagnostic Trouble Code (DTC) relevant to catalyst system efficiency, P0420-00 stored in the Powertrain Control Module (PCM). The Malfunction Indicator Lamp (MIL) could also be illuminated. |
| SSM73866 | 2018-10-15. Service bulletin. Issue: A Technician will find the following Diagnostic Trouble Code (DTC) relevant to catalyst system efficiency, P0420-00 stored in the Powertrain Control Module (PCM). The Malfunction Indicator Lamp (MIL) could also be illuminated. Affected vehicle vin ranges as follows ? Range Rover Sport (LW) AJ200P PHEV ? 146054 onwards. Range Rover (LG) AJ200P PHEV ? 343646 onwards |
| SSM73866 | 2018-09-17. Service bulletin. Issue: A Technician will find the following Diagnostic Trouble Code (DTC) relevant to catalyst system efficiency, P0420-00 stored in the Powertrain Control Module (PCM). The Malfunction Indicator Lamp (MIL) could also be illuminated. |
6 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.