DTC P01BC Oil Temperature with Oil Level Sensor Circuit Low (4JJ3 with DPD)

1. DTC P01BC description

The oil level sensor is integrated with the oil temperature sensor and it is installed at the bottom left of the cylinder block. The oil temperature sensor is a variable resistor and calibrates the oil level by measuring engine oil temperature. This sensor has the signal circuit and ground circuit, and each of them is connected to the ECM. The oil temperature sensor resistance is high when the engine oil temperature is low, and the sensor resistance decreases as the engine oil temperature increases. The ECM detects a high voltage when the sensor resistance is high, and a low voltage when the sensor resistance is low. If the ECM detects an excessively high signal voltage, the DTC is set.

2. Condition for setting DTC P01BC

Condition for running the DTC

The battery voltage is 10 to 16 V.
The ignition switch is ON.
The engine runtime is 10 minutes or more.
DTCs P0606 and P060B are not set.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P0606 ECM/PCM Processor".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC P060B Internal Control Module A/D Processing Performance".

Condition for setting the DTC

The ECM detects that the oil level sensor (oil temperature) signal voltage is 4.9 V or more for 6 seconds.

3. Action taken when DTC P01BC sets

The ECM illuminates the SVS indicator light. Refer to Action taken when DTC sets - Type C.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".

The ECM assumes a default oil level sensor (oil temperature) value.

4. Condition for clearing DTC P01BC

Refer to Condition for clearing the SVS indicator light/DTC - Type C.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".