DTC P0EC9-71: A/C Low Pressure Magnetic Valve Actuator Stuck [08/2023 - ]: Procedure
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.
- CHECK DTC (AIR CONDITIONING SYSTEM)
- Check for DTCs.
Body Electrical > Air Conditioner > Trouble Codes
HINT:
Check even when the DTCs detected for temporary failures.
Result
Result Proceed to B1385-71 is not output A B1385-71 is output B Relevant DTC B1385-71 A/C Cooling Electric Expansion Valve Actuator Stuck
Result:
B
GO TO DTC CHART (B1385-71). Refer to DTC B1385-71: A/C Cooling Electric Expansion Valve Actuator Stuck [08/2023 - ]
Result:
A
See step 2
- Check for DTCs.
- CHECK DTC (HYBRID BATTERY CONTROL SYSTEM)
- Check for DTCs.
Powertrain > HV Battery > Trouble Codes
HINT:
Check even when the DTCs detected for temporary failures.
Result
Result Proceed to P1B83-1C is not output A P1B83-1C is output B Relevant DTC P1B83-1C Hybrid/EV Battery Pack Refrigerant Pressure Sensor "A" Circuit Range/Performance Circuit Voltage Out of Range
Result:
B
GO TO DTC CHART (P1B83-1C). Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2023 - ]
Result:
A
See step 3
- Check for DTCs.
- INSPECT LOW PRESSURE MAGNETIC VALVE (NO. 1 MAGNET VALVE ASSEMBLY)
Refer to INSPECTION [08/2023 - ]
Result
Proceed to OK NG Result:
OK
REPLACE HEAT PUMP ECU ASSEMBLY. Refer to REMOVAL [08/2023 - ]
Result:
NG
REPLACE LOW PRESSURE MAGNETIC VALVE (NO. 1 MAGNET VALVE ASSEMBLY). Refer to REMOVAL [08/2023 - ]