Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that a sensor checking the motor's temperature is reading a number that's too low. It's like when a thermometer says it's freezing outside, but you know it's not that cold.
This code indicates that the temperature readings from the drive motor temperature sensors are lower than expected, suggesting a possible sensor fault or wiring issue.
The P1ACE code is triggered when the drive motor temperature sensors report a temperature that is below the expected operational range. This could be due to a faulty sensor, wiring issues, or a problem with the motor's cooling system.
• Check Engine Light illuminated
• Reduced vehicle performance
• Possible overheating warnings
• Faulty drive motor temperature sensor
• Damaged or corroded wiring/connectors
• Cooling system malfunction
OBD-II: On-Board Diagnostics, a standard system for vehicle self-diagnostics.
Drive Motor: The electric motor that propels the vehicle.
• Use an OBD-II scanner to confirm the code.
• Inspect the drive motor temperature sensor and its wiring for damage.
• Check the cooling system for proper operation.
• Replace the faulty temperature sensor.
• Repair or replace damaged wiring/connectors.
• Service the cooling system if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Chevrolet Volt
• Nissan Leaf
• Toyota Prius
• Regularly inspect and maintain the cooling system.
• Ensure wiring and connectors are free from corrosion.
• Perform routine diagnostic checks.
Sensor Issue
• Do not ignore the check engine light.
• Have the vehicle inspected by a professional if unsure.
• Avoid driving the vehicle hard until the issue is resolved.
Check your vehicle's warranty; sensor issues may be covered under powertrain or emissions warranty.
This code has been associated with hybrid and electric vehicles where motor temperature monitoring is critical for performance and safety.
Moderate – It should be addressed soon to prevent potential damage to the motor.
Ignoring this code could lead to motor damage and potential safety hazards.
• Vehicle at operating temperature
• Drive motor under load
The drive motor temperature sensor is typically located near or on the drive motor assembly.
Q: Can I drive with a P1ACE code?
A: It's not recommended to drive for extended periods with this code active, as it could lead to motor damage.
Q: How do I reset the P1ACE code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, the code will return.
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