DTC P011A-62: Engine Coolant Temperature Sensor 1/2 Signal Compare Failure; DTC P111A-62: Engine Coolant Temperature Sensor 1/3 Signal Compare Failure [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
- READ OUTPUT DTC (DTC P011A-62 AND/OR P11AA-62)
- Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
Result Proceed to P011A-62 and P111A-62 are output A P011A-62 is output B P111A-62 is output C - Record the Freeze Frame Data.
HINT:
- When the engine is cold, the value of the engine coolant temperature sensor (for water inlet housing side), engine coolant temperature sensor (for cylinder head side) and engine coolant temperature sensor (for outlet side) should be approximately the same.
- If only one of the sensors has deviating output values, this sensor may be malfunctioning.
Result:
B
See step 3
Result:
C
See step 4
Result:
A
See step 2
- Read the DTCs.
- REPLACE ENGINE COOLANT TEMPERATURE SENSOR (FOR WATER INLET HOUSING SIDE)
HINT:
Refer to PROCEDURE - Step 7
Result
Proceed to NEXT Result:
NEXT
See step 5
- REPLACE ENGINE COOLANT TEMPERATURE SENSOR (FOR OUTLET SIDE)
HINT:
Refer to PROCEDURE - Step 2
Result
Proceed to NEXT Result:
NEXT
See step 5
- REPLACE ENGINE COOLANT TEMPERATURE SENSOR (FOR CYLINDER HEAD SIDE)
HINT:
Refer to PROCEDURE - Step 9
Result
Proceed to NEXT Result:
NEXT
See step 5
- CLEAR DTC
Pre-procedure1
- None.
Post-procedure1
- Turn the ignition switch off and wait for at least 30 seconds.
Result:
NEXT
See step 6
- READ VALUE USING GTS (COOLANT TEMPERATURE SENSOR)
Pre-procedure1
- Start the engine and fully warm up the engine with the air conditioning off until the electric cooling fan starts to operate.
- Read the Data List, when the engine is fully warmed up.
Powertrain > Engine > Data List
Tester Display Coolant Temperature Sensor1 Coolant Temperature Sensor2 Coolant Temperature Sensor3 Standard
GTS Display Condition Specified Condition Difference between Coolant Temperature Sensor1 and Coolant Temperature Sensor2 After fully warming up Within 20°C (36°F) Difference between Coolant Temperature Sensor1 and Coolant Temperature Sensor3 HINT:
The engine can be judged as fully warmed up after warming up the engine with the air conditioning off until the electric cooling fan starts to operate.
Result
Proceed to NEXT
Post-procedure1
- Turn the ignition switch off and wait for at least 30 seconds.
Result:
NEXT
END