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Home >> Toyota >> 2019 >> RAV4 LE, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 133 (Engine Control System (A25A-FXS) (W/ Canister Pump Module) - Diagnostic Codes (03 Of 13)) >> SFI SYSTEM (w/ Canister Pump Module) >> DTC P012F-62: Engine Coolant Temperature/Engine Oil Temperature Signal Compare Failure [02/2019 - 06/2020] >> Description
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DTC P012F-62: Engine Coolant Temperature/Engine Oil Temperature Signal Compare Failure [02/2019 - 06/2020]: Description

WARNING: This page is about a different variant/trim than selected.

The engine is equipped with an engine coolant temperature sensor and an engine oil temperature sensor. The engine coolant temperature sensor and engine oil temperature sensor each have a built-in thermistor. As the temperature decreases, the thermistor resistance increases and as the temperature increases, the thermistor resistance decreases. The voltages at the respective terminals of the ECM change in accordance with the changes in the resistance of the thermistors. The ECM performs control based on these voltages.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P012F-62 Engine Coolant Temperature/Engine Oil Temperature Signal Compare Failure All of the following conditions are met (2 trip detection logic):
  1. The auxiliary battery voltage is higher than 8 V.
  2. 5 hours or more have elapsed since the engine stopped on the previous trip.
  3. The engine oil temperature is -10°C (14°F) or higher.
  4. The engine coolant temperature is -10°C (14°F) or higher.
  5. The difference between the readings of the engine coolant temperature and engine oil temperature is higher than 20°C (36°F).
  • Engine coolant temperature sensor
  • Engine oil temperature sensor
  • ECM
Comes on DTC stored SAE Code: P012F