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 computer in your car is having trouble reading the temperature of one of the motors. It's like when a thermometer doesn't work right and keeps giving different temperatures.
The P0EF5 code indicates that the vehicle's control module has detected an intermittent or erratic signal from the temperature sensor for Drive Motor C. This could mean the sensor is not consistently providing accurate temperature readings.
The Drive Motor C Temperature Sensor is responsible for monitoring the temperature of the electric drive motor labeled as 'C'. When the sensor circuit is intermittent or erratic, it means there is an inconsistent signal being sent to the vehicle's control module, which can affect the motor's performance and safety systems.
• Check engine light is on
• Reduced vehicle performance
• Inconsistent motor operation
• Faulty temperature sensor
• Wiring issues such as loose connections or damaged wires
• Malfunctioning control module
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosing and reporting
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connections to the temperature sensor
• Test the temperature sensor for proper operation
• Replace the faulty temperature sensor
• Repair or replace damaged wiring
• Reprogram or replace the control module if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools (screwdrivers, pliers)
$150 - $400
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance and inspection of electrical connections
• Timely replacement of faulty sensors
• Keeping the vehicle's software updated
Sensor Issue
• Do not ignore the check engine light
• Have the vehicle inspected by a professional if unsure
• Avoid driving the vehicle aggressively until repaired
Check with your vehicle manufacturer for warranty coverage on sensors and electrical components.
This code is more common in hybrid and electric vehicles due to the complexity of their drive systems.
Moderate – It should be addressed soon to prevent potential damage to the drive motor.
Ignoring this code can lead to reduced vehicle performance and potential safety risks.
• Vehicle at operating temperature
• Engine running and in park
The Drive Motor C Temperature Sensor is typically located near the drive motor in the engine bay or under the vehicle.
Q: Can I drive with the P0EF5 code?
A: It's best to have it checked as soon as possible to avoid potential damage to the motor.
Q: Will clearing the code fix the problem?
A: Clearing the code may temporarily turn off the check engine light, but it won't fix the underlying issue.
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