Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer thinks the sensor that checks how hot one of the electric motors is isn't working right. It's like a thermometer that's not giving the right reading.
The P0EF3 code indicates that the temperature sensor for Drive Motor C is reporting a voltage that is lower than expected, which suggests a potential issue with the sensor or its circuit.
The Drive Motor C Temperature Sensor Circuit Low code is triggered when the Powertrain Control Module (PCM) detects a low voltage signal from the temperature sensor associated with Drive Motor C. This could be due to a faulty sensor, wiring issues, or a problem with the PCM itself.
• Check engine light is on
• Reduced vehicle performance
• Possible overheating of the drive motor
• Faulty Drive Motor C temperature sensor
• Damaged or corroded wiring/connectors
• Faulty PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the temperature sensor for proper operation.
• Replace the Drive Motor C temperature sensor.
• Repair or replace damaged wiring/connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect and maintain wiring and connectors.
• Perform routine diagnostic checks.
• Ensure proper cooling system maintenance.
Sensor Issue
• Avoid driving aggressively until the issue is resolved.
• Monitor the vehicle's performance and temperature closely.
Check with the manufacturer for specific warranty coverage related to the powertrain or sensors.
This code is commonly associated with hybrid and electric vehicles due to the use of electric drive motors.
Moderate – It should be addressed soon to prevent potential damage to the drive motor.
Driving with this code may lead to reduced performance and potential overheating, which could be unsafe.
• Vehicle at operating temperature
• Engine running
The temperature sensor for Drive Motor C is typically located near the motor itself, often integrated into the motor housing.
Q: Can I drive my car with this code?
A: It's possible to drive, but it is not recommended as it may lead to further damage.
Q: How can I reset the check engine light?
A: You can use an OBD-II scanner to reset the light, but the underlying issue should be fixed first.
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