Land Rover Range Rover Sport 2020–2022 — technical service bulletin
Bulletin N900 Range Rover 20MAR26 · NHTSA communication 11031117 · issued Mar 20, 2026
Technical service bulletin
communication type
Power Train
component
2020–2022
model years
3
vehicle entries
Official summary
Loss of power, rattling from underside of the vehicle and the Malfunction Indicator Lamp (MIL) illuminated on the instrument cluster. The root cause of the symptoms is the catalytic converter over temperature. The calibration of the exhaust sound tuning feature allows for too many repeated activations in a short period of time, resulting in catalytic converter over temperature and leading to Diagnostic Trouble Codes (DTC) P0420 and P0430 being stored in the Powertrain Control Module (PCM).
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.