Jaguar Land Rover Reports False Flag DTC
This bulletin applies to 2018 Land Rover Range Rover Discovery Sport, Evoque and Velar vehicles. The engine MIL may be illuminated with DTC P0191-85 stored in the PCM.
This may be caused by an incorrect PCM calibration causing a false flag of the DTC.A Jaguar Land Rover approved Midtronics battery power supply must be connected to the vehicle’s startup battery. All ignition ON/OFF requests must be performed. Failure to do these steps may cause damage to vehicle control modules.
The Jaguar Land Rover-approved diagnostic equipment must be loaded with PATHFINDER version 211 or later. Select ECU Diagnostics. Select Powertrain Control Module. Select Update ECU. Follow on screen instructions until the application finishes successfully.
Select ECU Functions. Select Powertrain control module adaption clear. Follow the on screen instructions.
Exit the current session. If required, reset the vehicle to Transit mode. Select the Exit icon. Disconnect the diagnostic equipment and battery power supply.
About the Author
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.