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Home >> Lexus >> 2017 >> CT 200h Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (3 Of 3) & Circuit Tests) >> SFI System >> DTC P0606: ECM / PCM Processor [08/2015 - ] >> Monitor Description
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Monitor Description

The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from the CPUs are different and deviate from the standards, the ECM will illuminate the MIL and stores the DTC immediately.

DTC No. DTC Detection Condition Trouble Area
P0606 Either condition is met (1 trip detection logic):
  • There is an ECM main CPU error
  • There is an ECM sub CPU error
ECM