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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 140 (Hybrid Control System (For Lithium-Ion Battery) - Diagnostic Codes (2 Of 4)) >> HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY) >> DTC P0C73-96: Motor Electronics Coolant Pump "A" Component Internal Failure [08/2020 - ] >> Monitor Description

Monitor Description

WARNING: This page is about a different car, the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, and 2021 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

The hybrid vehicle control ECU monitors speed of the inverter water pump assembly. If there is an abnormality in speed, the hybrid vehicle control ECU will illuminate the MIL and store a DTC.

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