DTC P012F-62: Engine Coolant Temperature/Engine Oil Temperature Signal Compare Failure [12/2021 - ]: Procedure

1. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   P012F-62 and other DTCs are output	A
   P012F-62 is output	B

   HINT: 

   If any DTCs other than P012F-62 are output, troubleshoot those DTCs first.

2. Record the freeze frame data.

Result: 

A 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2021 - 10/2023]  , or Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2023 - ] 

Result: 

B 

See step  2

1. Using the GTS, read the values displayed in the freeze frame data recorded in step 1.

   Powertrain > Engine > DTC (P012F-62) > Freeze Frame Data 

   Tester Display
   Coolant Temperature
   Intake Air Temperature B1S1

2. Read the value displayed on the GTS.

   HINT: 

   • When the engine is cold, the value of the engine coolant temperature, engine oil temperature and intake air temperature should be approximately the same.
   • If the result is not as specified, check that there are no heat sources such as a block heater in the engine compartment.
   • Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

     Refer to INITIALIZATION [12/2021 - ]

   Result

   Result	Proceed to
   The difference between the value of Coolant Temperature and the Intake Air Temperature B1S1 is 15 °C or less	A
   None of the above conditions are met	B

   HINT: 

   15°C (27°F)

Result: 

B 

REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to  REMOVAL [12/2021 - ] 

Result: 

A 

See step  3

1. Using the GTS, read the values displayed in the freeze frame data recorded in step 1.

   Powertrain > Engine > DTC (P012F-62) > Freeze Frame Data 

   Tester Display
   Engine Oil Temperature Sensor
   Intake Air Temperature B1S1

2. Read the value displayed on the GTS.

   HINT: 

   When the engine is cold, the value of the engine coolant temperature, engine oil temperature and intake air temperature should be approximately the same.

   Result

   Result	Proceed to
   The difference between the value of Engine Oil Temperature Sensor and the Intake Air Temperature B1S1 is 15 °C or less	A
   None of the above conditions are met	B

   HINT: 

   15°C (27°F)

Result: 

A 

REPLACE ECM. Refer to  REMOVAL [12/2021 - ] 

Result: 

B 

REPLACE ENGINE OIL TEMPERATURE SENSOR (TEMPERATURE SENSOR). Refer to  REMOVAL [12/2021 - ]