DTC P19CF-62: Hybrid/EV Battery Pack Coolant Temperature Sensor System Signal Compare Failure [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.

The battery ECU assembly monitors the HV battery coolant temperature using the battery pack coolant temperature sensors (thermistors).

The battery ECU assembly detects malfunctions in the battery pack coolant temperature sensors (thermistors) and outputs DTCs.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
P19CF-62	Hybrid/EV Battery Pack Coolant Temperature Sensor System Signal Compare Failure	Difference between the values of 4 battery pack coolant temperature sensors is the specified value or more (1 trip detection logic)	No. 1 air conditioning thermistor assembly (duct inlet 1) No. 2 air conditioning thermistor assembly (duct outlet 1) No. 1 air conditioning thermistor assembly (duct inlet 2) No. 2 air conditioning thermistor assembly (duct outlet 2) Wire harness or connector Battery ECU assembly	Comes on	Master Warning: Comes on	HV Battery	A	SAE Code: P19CF