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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 83 (Heating / Air Conditioning System - Diagnostic Codes (1 Of 3)) >> AIR CONDITIONING SYSTEM (for PHEV Model) >> DTC B1387-18: A/C Cooling Electric Expansion Valve Circuit Current Below Threshold [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.

When an open circuit is detected during cooling electric expansion valve (cooler expansion valve) motor excitation output, the air conditioning amplifier assembly turns the MIL on and stores this DTC.

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