Home › Land Rover › 2014 › Range Rover Autobiography › Repair and Diagnosis › Engine Performance › Engine Control Systems › Diagnostic Trouble Code Index V8 S/C 5.0L Petrol, DTC: Powertrain Control Module (Pcm) -- Range Rover/L405 › Diagnostic Trouble Code Index V8 SC 5.0L Petrol, DTC Powertrain Control Module › Description And Operation › DTC P061D-42: Internal Control Module Engine Air Mass Performance - General memory failure › Possible Causes