P2815 moderate

Transmission Clutch Cooling Pump Control Circuit

The P2815 code means the vehicle's onboard diagnostic system has detected: Transmission Clutch Cooling Pump Control Circuit. This is a moderate severity code.

My Garage →

Keep driving?: Short distances only
DIY difficulty: hard
Estimated cost: $300 - $1000 (parts and labor)

Check Your Fluid First

ANCEL AD310 OBD-II Scanner

Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.

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Read Transmission Codes

LAUNCH CRP123X (Reads All Systems)

Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.

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Common Symptoms

Transmission clutch overheating
Reduced clutch cooling capacity
Warning light on dashboard
Degraded shift quality when hot

Probable Causes (Ranked by Likelihood)

Failed clutch cooling pump Very High
Cooling pump circuit wiring fault High
Cooling pump relay failure Moderate
TCM cooling pump driver fault Low

Step-by-Step Diagnostic Procedure

Test clutch cooling pump motor operation
Check pump circuit wiring and relay
Verify TCM commands pump activation
Monitor clutch temperatures during driving

Frequently Asked Questions

What is the clutch cooling pump?

DCT transmissions often have a dedicated pump that circulates cooling fluid through the clutch housing to prevent overheating during repeated engagement.

Will the clutch overheat without the cooling pump?

In heavy traffic or aggressive driving, yes. Normal highway driving may not generate enough heat to cause issues, but the clutch has no active cooling.

Can I drive normally with a failed cooling pump?

You can drive short distances avoiding heavy traffic. Monitor for overheating warnings and avoid aggressive driving or repeated low-speed maneuvering.