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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 65 (Hybrid Battery System - Diagnostic Codes (2 Of 5)) >> HYBRID BATTERY SYSTEM (for PHEV Model) >> DTC P0CDF-73: Hybrid/EV Battery Pack Coolant Control Valve "A" Stuck On Actuator Stuck Closed [12/2023 - ] >> Description

DTC P0CDF-73: Hybrid/EV Battery Pack Coolant Control Valve "A" Stuck On Actuator Stuck Closed [12/2023 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate DTC Output from Priority Note
P0CDF-73 Hybrid/EV Battery Pack Coolant Control Valve "A" Stuck On Actuator Stuck Closed Detected when the following conditions are satisfied within the specified time from when HV battery cooling started
(2 trip detection logic)
Close malfunction detected 
  1. The change in refrigerant temperature for duct inlet 1 and duct inlet 2 is lower than the specified value when the command value sent to the No. 2 magnet valve assembly is an open command
  • No. 2 magnet valve assembly
  • No. 1 air conditioning thermistor assembly (duct inlet 1, duct inlet 2)
  • Battery ECU assembly
  • Wire harness or connector
  • A/C cooler pipe
  • HV battery cooler pipe
  • Cooling fan system
 Comes on Master Warning:
Comes on		 HV Battery A SAE Code:
P0CE1
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