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Service bulletins for the 2018 Land Rover Discovery

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

887 on file from NHTSA, as of 2026-10-19.

About P0191 on the 2018 Land Rover Discovery: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P0191 are shown. Show all

Bulletins, newest first
LTB01245NAS32019-04-08. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. The engine MIL (Malfunction Indicator Lamp) may be illuminated with DTC (Diagnostic Trouble Code) P0191-85 stored in the Powertrain Control Module (PCM).
LTB01245NAS32019-04-01. Service bulletin. POWER TRAIN. The engine MIL (Malfunction Indicator Lamp) may be illuminated with DTC (Diagnostic Trouble Code) P0191-85 stored in the Powertrain Control Module (PCM).
SSM740932018-11-26. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE. The customer reports reduced performance with P0191-85 observed in the PCM. This may or may not also illuminate the MIL. DTCs P168F-00, P2178-00, or P144C-00 may be stored also.
SSM739592018-11-13. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Issue: The customer reports reduced performance with P0191-85 observed in the PCM. This may or may not also illuminate the MIL.
SSM740932018-11-13. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). The customer reports reduced performance with P0191-85 observed in the PCM. This may or may not also illuminate the MIL. DTCs P168F-00, P2178-00, or P144C-00 may be stored also.
SSM73959.22018-11-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Issue: The customer reports reduced performance with P0191-85 observed in the PCM. This may or may not also illuminate the MIL. DTCs P168F-00, P2178-00, or P144C-00 may be stored also.
SSM739592018-11-05. Service bulletin. ELECTRICAL SYSTEM. Issue: The customer reports reduced performance with P0191-85 observed in the PCM. This may or may not also illuminate the MIL. DTCs P168F-00, P2178-00, or P144C-00 may be stored also.
SSM73959.22018-10-22. Service bulletin. ELECTRICAL SYSTEM. Issue: The customer reports reduced performance with P0191-85 observed in the PCM. This may or may not also illuminate the MIL. DTCs P168F-00, P2178-00, or P144C-00 may be stored also.
SSM739592018-10-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Issue: The customer reports reduced performance with P0191-85 observed in the PCM. This may or may not also illuminate the MIL. DTCs P168F-00, P2178-00, or P144C-00 may be stored also.
SSM739592018-10-15. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. Issue: The customer reports reduced performance with P0191-85 observed in the PCM. This may or may not also illuminate the MIL.
SSM739592018-09-17. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. Issue: The customer reports reduced performance with P0191-85 observed in the PCM. This may or may not also illuminate the MIL.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.