Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (2GR-FKS) - Diagnostic Codes (5 Of 6) >> SFI System >> DTC P0606-04: Control Module Processor System Internal Failure; DTC P0606-29: Control Module Processor Signal Invalid; DTC P0606-2A: Control Module Processor Signal Stuck in Range; DTC P0606-47: Control Module Processor Watchdog/Safety MCU Failure [12/2019 - 10/2022] >> Monitor Strategy