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 found a problem with the temperature sensors that check how hot the electric motor's parts are getting. It's like when a thermometer shows the wrong temperature.
The car's computer monitors the temperature of the drive motor inverter using multiple sensors. If these sensors give readings that don't match up, the computer sets this code.
The P1AE4 code indicates that the Engine Control Module (ECM) has detected a discrepancy between the temperature readings from the Drive Motor Inverter Temperature Sensor 'A' and Sensor 'C'. This could mean that one of the sensors is faulty or that there is an issue with the inverter itself.
• Check Engine Light is on
• Reduced vehicle performance
• Possible overheating warning
• Faulty temperature sensor
• Wiring issues or poor connections
• Faulty drive motor inverter
ECM: Engine Control Module
Inverter: A device that converts DC to AC power for the electric motor
• Use a diagnostic scan tool to read the code and freeze frame data.
• Inspect the wiring and connectors for the temperature sensors.
• Test the temperature sensors for proper operation.
• Replace faulty temperature sensor(s).
• Repair or replace damaged wiring or connectors.
• Replace the drive motor inverter if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Chevrolet Volt
• Cadillac ELR
• Chevrolet Spark EV
• Regular maintenance checks
• Ensure proper cooling system function
• Monitor for unusual vehicle behavior
Sensor Issue
• Avoid driving the vehicle hard until the issue is resolved.
• Regularly check for updates or recalls related to the vehicle's electrical system.
Check with the vehicle manufacturer for warranty coverage on hybrid or electric components.
This code has been reported in hybrid and electric vehicles where precise temperature management is crucial for performance and safety.
Moderate – Addressing this issue promptly can prevent further damage to the vehicle's electric drive components.
Driving with this code active may lead to reduced performance or damage. Always follow manufacturer guidelines for repairs.
• Vehicle at operating temperature
• Inverter under load
The drive motor inverter and its temperature sensors are typically located near the vehicle's electric motor, often in the engine bay or under the vehicle.
Q: Can I drive my car with a P1AE4 code?
A: It's not recommended to drive extensively with this code, as it could lead to overheating or damage to the motor inverter.
Q: What happens if I ignore this code?
A: Ignoring this code could result in reduced performance and potential damage to the vehicle's electric drive system.
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