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 a sensor in the car that checks how hot a part of the electric motor system is, is reading too high. It's like a thermometer showing a temperature that's too high.
The P0AF5 code is triggered when the powertrain control module (PCM) detects a high voltage signal from the drive motor inverter temperature sensor B. This indicates that the sensor is reading a temperature that is higher than expected.
The drive motor inverter temperature sensor B monitors the temperature of the inverter, which is a component that converts direct current (DC) to alternating current (AC) for the electric motor. A high circuit signal suggests that the sensor is reporting a temperature that exceeds the normal operating range, which could be due to a sensor fault, wiring issues, or actual overheating of the inverter.
• Check Engine Light is on
• Reduced vehicle performance
• Possible overheating warning
• Increased energy consumption
• Faulty drive motor inverter temperature sensor B
• Wiring issues such as short circuits or open circuits
• Actual overheating of the inverter
• Faulty PCM
Inverter: A device that converts DC electricity to AC electricity.
PCM: Powertrain Control Module, the computer that controls the engine and transmission.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors related to the temperature sensor.
• Test the drive motor inverter temperature sensor B for proper operation.
• Check for any signs of overheating in the inverter.
• Replace the drive motor inverter temperature sensor B if faulty.
• Repair or replace any damaged wiring or connectors.
• Ensure the inverter is not overheating and address any cooling issues.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Thermal imaging camera
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks of the inverter system.
• Ensure proper cooling system operation.
• Inspect wiring and connectors periodically.
Sensor Issue
• Avoid driving the vehicle aggressively until the issue is resolved.
• Monitor the vehicle's temperature gauges closely.
• Schedule a service appointment promptly.
Check with the vehicle manufacturer for warranty coverage on hybrid system components.
This code is more common in hybrid and electric vehicles due to the complexity of their electrical systems.
Moderate – It is important to address this issue to prevent potential damage to the inverter or electric motor.
Driving with this code can lead to reduced performance and efficiency. It is advised to have the vehicle inspected and repaired by a professional.
• Vehicle at operating temperature
• Electrical system under load
The drive motor inverter temperature sensor B is typically located near the inverter assembly in the engine bay.
Q: Can I drive my car with a P0AF5 code?
A: It is not recommended to drive the car for extended periods with this code, as it may lead to further damage.
Q: How can I reset the P0AF5 code?
A: You can reset the code using an OBD-II scanner, but it's important to fix the underlying issue first.
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