DTC P111C-62: Control Module Internal Temperature Sensor/Intake Air Temperature Sensor Signal Compare Failure [11/2021 - 03/2022]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P111C-62)
- Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
Result Proceed to DTC P111C-62 is output A DTC P111C-62 and other DTCs are output B HINT:
If any DTCs other than P111C-62 are output, troubleshoot those DTCs first.
- Record the freeze frame data.
Result:
B
GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 03/2022]
Result:
A
See step 2
- Read the DTCs.
- CHECK FREEZE FRAME DATA (COOLANT TEMPERATURE AND INTAKE AIR TEMPERATURE)
- Using the GTS, read the values displayed in the freeze frame data recorded in step 1.
Powertrain > Engine > DTC (P111C-62) > Freeze Frame Data
Tester Display Coolant Temperature Intake Air Temperature - Read the value displayed on the GTS.
Standard
Difference between the Coolant Temperature and the Intake Air Temperature is within 15°C (27°F).
HINT:
- When the engine is cold, the value of the coolant temperature, ECM internal temperature and Intake Air Temperature should be approximately the same.
- Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
Refer to INITIALIZATION [11/2021 - ]
Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [11/2021 - ]
Result:
NG
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to REMOVAL [11/2021 - ]
- Using the GTS, read the values displayed in the freeze frame data recorded in step 1.