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 noticed a problem with the temperature sensors that help keep the electric motor cool. They are not agreeing with each other about how hot it is.
The vehicle's control module has detected a discrepancy between the readings of two temperature sensors (B and C) in the drive motor inverter, indicating they are not providing consistent data.
The P1AE3 code is triggered when the Powertrain Control Module (PCM) detects a correlation error between the drive motor inverter temperature sensors 'B' and 'C'. These sensors are responsible for monitoring the temperature of the drive motor inverter, which is crucial for maintaining optimal performance and preventing overheating.
• Check Engine Light illuminated
• Reduced vehicle performance
• Overheating of the drive motor inverter
• Inconsistent vehicle acceleration
• Faulty temperature sensor B or C
• Wiring issues or poor connections
• Faulty drive motor inverter
• PCM malfunction
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the temperature sensors.
• Test the sensors for proper operation.
• Check the drive motor inverter for any signs of damage.
• Replace faulty temperature sensor B or C.
• Repair or replace damaged wiring or connectors.
• Replace the drive motor inverter if necessary.
• Reprogram or replace the PCM if required.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regular maintenance checks
• Ensure proper cooling system function
• Avoid extreme driving conditions
Sensor Issue
• Have the vehicle inspected by a professional.
• Avoid driving at high speeds until repaired.
Repairs may be covered under the vehicle's powertrain warranty.
This code is commonly associated with hybrid and electric vehicles due to their reliance on drive motor inverters.
Moderate – It's important to address this issue to avoid potential damage to the drive motor inverter.
Driving with this issue may lead to reduced performance and potential safety risks. Prompt repair is recommended.
• Vehicle at operating temperature
• Drive motor inverter active
The drive motor inverter is typically located near the vehicle's electric motor, often in the engine bay.
Q: Can I drive my car with a P1AE3 code?
A: It's not recommended, as it may lead to reduced performance and potential damage to the drive motor inverter.
Q: How can I prevent a P1AE3 code?
A: Regular maintenance and ensuring the cooling system is functioning properly can help prevent this code.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.