The P0C73 OBD-II code pertains to the Motor Electronics Coolant Pump “A” Control Performance, indicating a potential issue within the vehicle’s high voltage system.
What Does the P0C73 Code Mean?
This code is triggered when the Power Management Control Module (HV CPU) detects a failure in the inverter/converter assembly’s water pump, which is essential for cooling the high voltage components of hybrid and electric vehicles.
What Causes the P0C73 Code?
Several factors can lead to the P0C73 code being set, including:
- High voltage control module failure
- Inverter/converter water pump failure
- Wiring issues within the cooling system
What Are the Symptoms of the P0C73 Code?
When the P0C73 code is present, you may observe the following symptoms:
- Illumination of the high voltage system temperature light
- Possible overheating of the high voltage system
- Decreased performance of the vehicle
How Serious Is the P0C73 Code?
The severity of the P0C73 code is considered urgent. Ignoring this code can lead to severe damage to the vehicle’s high voltage system, which may result in costly repairs and pose a safety risk to the driver and passengers.
How to Diagnose the P0C73 Code
To accurately diagnose the P0C73 code, follow these steps:
- Use an OBD-II scanner to confirm the presence of the P0C73 code and check for any related codes.
- Inspect the inverter/converter water pump for signs of failure or damage.
- Examine the wiring and connectors associated with the water pump and control module for any faults.
- Test the high voltage control module to ensure it is functioning correctly.
Common Repairs for the P0C73 Code
Common repair solutions for the P0C73 code may include:
- Replacing the inverter/converter water pump if it is found to be faulty.
- Repairing or replacing damaged wiring and connectors.
- Replacing the high voltage control module if it is determined to be defective.
How Much Does It Cost to Fix the P0C73 Code?
The cost of repairs for the P0C73 code can vary widely based on the specific issue. On average, costs can range from $200 to $1,500, depending on whether a simple wiring repair or a complete water pump replacement is needed.
Can I Fix the P0C73 Code Myself?
While some experienced DIYers may be able to handle minor repairs related to the P0C73 code, such as inspecting wiring and connectors, it is recommended to seek professional assistance for diagnosing and repairing high voltage systems to ensure safety and proper vehicle function.
