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 has found a problem with a sensor that checks how hot a part of the electric motor system is getting. It's like a thermometer for the car's motor, and it's not working right.
The P0E28 code indicates an issue with the circuit of the temperature sensor for the drive motor inverter. This sensor monitors the temperature to ensure it doesn't get too hot.
The drive motor inverter temperature sensor is responsible for monitoring the temperature of the inverter in hybrid or electric vehicles. The inverter converts DC electricity from the battery to AC electricity to power the motor. If the sensor circuit is malfunctioning, it can lead to incorrect temperature readings, potentially causing the system to overheat or shut down as a precaution.
• Check Engine Light is on
• Reduced vehicle performance
• Overheating warning light
• Faulty temperature sensor
• Damaged wiring or connectors
• Malfunctioning inverter control module
Inverter: A device that converts DC electricity to AC electricity.
Temperature Sensor: A device that measures temperature and sends the information to the vehicle's computer.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors of the temperature sensor.
• Test the sensor for proper operation using a multimeter.
• Replace the faulty temperature sensor.
• Repair or replace damaged wiring or connectors.
• Replace the inverter control module if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$200 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect electrical connections.
• Ensure proper cooling system maintenance.
• Avoid overloading the vehicle's electrical system.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if you notice performance issues.
Check if your vehicle's powertrain warranty covers sensor issues.
This code has become more common with the rise of hybrid and electric vehicles, which rely heavily on inverter systems.
Moderate – Address the issue soon to prevent potential overheating.
Ignoring this code could lead to overheating, which may cause damage to the vehicle and pose a safety risk.
• Vehicle in 'Ready' mode
• Normal operating temperature
The drive motor inverter temperature sensor is typically located near the inverter assembly in the engine compartment.
Q: Can I drive with a P0E28 code?
A: It's not recommended to drive for long periods with this code, as it could lead to overheating.
Q: How can I prevent this code from appearing?
A: Regular maintenance and inspections of the vehicle's electrical system can help prevent this issue.
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