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 thinks the pump that helps cool the electric motor isn't working right.
The P0C73 code indicates an issue with the control performance of the motor electronics coolant pump, which is responsible for cooling the motor electronics.
The P0C73 code is triggered when the powertrain control module (PCM) detects that the motor electronics coolant pump A is not performing as expected. This pump is crucial for maintaining the proper temperature of the motor electronics by circulating coolant.
• Check Engine Light is on
• Overheating of motor electronics
• Reduced vehicle performance
• Faulty coolant pump
• Electrical issues such as damaged wiring or connectors
• Faulty control module
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the coolant pump and its connections.
• Check for any damaged wiring or connectors.
• Replace the faulty coolant pump.
• Repair or replace damaged wiring or connectors.
• Replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance of the cooling system
• Check and replace coolant as needed
• Inspect electrical connections periodically
Engine Performance
• Do not ignore the Check Engine Light.
• Get the vehicle checked by a professional if unsure.
• Regularly maintain the cooling system.
Check with your vehicle manufacturer for warranty coverage on cooling system components.
This code has been associated with hybrid and electric vehicles where motor electronics cooling is critical.
High – This issue can lead to overheating and potential damage to motor electronics.
Driving with this code can lead to overheating and potential failure of motor electronics, which can be unsafe.
• Vehicle at operating temperature
• Coolant system fully pressurized
The motor electronics coolant pump is typically located near the motor or engine compartment.
Q: Can I drive with a P0C73 code?
A: It's not recommended as it can lead to overheating and damage to motor electronics.
Q: How can I prevent a P0C73 code?
A: Regular maintenance of the cooling system and checking for electrical issues can help prevent this code.
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