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P0C31: Inverter B Cooling System Performance

Severity
Medium
System
Vehicle Systems

What Does P0C31 Mean?

P0C31 is a diagnostic trouble code indicating: Inverter B Cooling System Performance. This code relates to the vehicle systems system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P0C31

Common Causes

Frequently Asked Questions

What does P0C31 mean?
P0C31 indicates: Inverter B Cooling System Performance. The vehicle's computer has detected that the Inverter B Cooling System is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P0C31?
You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P0C31 for extended periods may cause additional problems.
How much does it cost to fix P0C31?
Repair costs for P0C31 typically range from $50 to $400, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

  • 🔧 Inspect Inverter B Cooling System for contamination or wear
  • 🔧 Replace Inverter B Cooling System
  • 🔧 Address any related mechanical faults
  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

P0C00 Drive Motor A Current Low P0C01 Drive Motor A Current High P0C02 Drive Motor B Current P0C03 Drive Motor B Current Low P0C04 Drive Motor B Current High P0C05 Drive Motor A Phase U-V-W Circuit/Open P0C06 Drive Motor A Phase U-V-W Circuit Low P0C07 Drive Motor A Phase U-V-W Circuit High