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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Hybrid Control System (Diagnostic Codes) (3 Of 5)) >> Hybrid Control System >> DTC P1C77-79: Engine Failed to Start Mechanical Linkage Failure [10/2018 - ] >> DTC Summary

DTC Summary

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  1. MALFUNCTION DESCRIPTION 

    These DTCs are stored when the hybrid vehicle control ECU determines that the hybrid transaxle assembly has seized or that there is the hybrid transaxle assembly malfunction in the drivetrain. The cause of this malfunction may be one of the following:

    Engine malfunction 

    • Seizure due to insufficient engine oil
    • Seizure due to insufficient coolant
    • Damaged engine

    Hybrid transaxle malfunction 

    • Seizure due to insufficient ATF
    • Damaged hybrid transaxle internal components
    • Damaged transmission input damper assembly