Home >> Land Rover >> 2023 >> Range Rover Velar HST >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index INGENIUM I6 3.0L Petrol Vehicles With MHEV DTC Powertrain Control Module DTC: Powertrain Control Module (Pcm) P025B - P0634 -- Range Rover Velar/L560 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - INGENIUM I6 3.0L Petrol, Vehicles With: MHEV, DTC: Powertrain Control Module (Pcm) B1087-88 (G2430821) >> P061C-29: Internal Control Module Engine RPM Performance - Signal invalid >> Possible Causes