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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Hybrid Control System - Diagnostic Codes (4 Of 7)) >> HYBRID CONTROL SYSTEM (for PHEV Model) >> DTC P0C73-96: Motor Electronics Coolant Pump "A" Component Internal Failure [08/2023 - ] >> Monitor Description

Monitor Description

WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. 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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