Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the sensor that checks the temperature of a part in the car's electric motor system. It's like when a thermometer isn't working right and can't tell if something is hot or cold.
The code indicates an issue with the temperature sensor that monitors the gate driver of the inverter transistor in the drive motor 'A'. The sensor is not reading within the expected range.
The P1CD9 code is triggered when the Powertrain Control Module (PCM) detects that the temperature sensor for the drive motor 'A' inverter transistor gate driver is operating outside of its normal range. This could be due to a faulty sensor, wiring issues, or problems within the inverter itself.
• Check Engine Light is on
• Reduced vehicle performance
• Possible overheating of the drive motor
• Faulty temperature sensor
• Wiring issues or poor connections
• Faulty inverter transistor
Inverter: A device that converts DC power to AC power.
Transistor: A semiconductor device used to amplify or switch electronic signals.
• 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 or connectors.
• Replace the inverter transistor if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $500
Moderate
• Chevrolet Volt
• Toyota Prius
• Nissan Leaf
• Regular maintenance checks
• Ensure proper cooling system function
• Avoid excessive load on the vehicle's electric motor
Sensor Issue
• Do not ignore the Check Engine Light.
• Get the vehicle checked by a professional if performance issues are noticed.
Check with the vehicle manufacturer for warranty coverage on the drive motor and related components.
This code has been more common in hybrid and electric vehicles as they rely heavily on inverter and motor systems.
Moderate – It should be addressed soon to prevent potential damage to the drive motor.
Driving with this issue may lead to reduced performance and potential safety risks if the motor overheats.
• Vehicle must be in operation.
• Temperature sensor readings should be monitored under load.
The temperature sensor is located within the drive motor 'A' inverter assembly.
Q: Can I drive with a P1CD9 code?
A: It's not recommended as it may lead to further damage and reduced performance.
Q: How do I reset the P1CD9 code?
A: The code can be reset with an OBD-II scanner after the issue has been fixed.
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