Transmission Clutch C Pressure Too Low
The P2871 code means the vehicle's onboard diagnostic system has detected: Transmission Clutch C Pressure Too Low. This is a critical severity code.
- Keep driving?
- No -- stop driving
- DIY difficulty
- hard
- Estimated cost
- $800 - $3,500 (parts and labor)
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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Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.
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Common Symptoms
- Severe transmission slipping
- No forward or reverse movement
- Check Engine Light on
- Burning smell from transmission
Probable Causes (Ranked by Likelihood)
- Internal clutch pack C failure Very High
- Transmission pump pressure loss High
- Valve body stuck or leaking Moderate
- Damaged clutch seals Low
Step-by-Step Diagnostic Procedure
-
Check transmission fluid level and condition
-
Perform line pressure test
-
Inspect valve body operation
-
Remove pan and inspect for debris
Frequently Asked Questions
Is this a major repair?
Yes, low clutch pressure often indicates internal transmission damage requiring a rebuild or replacement.
What causes clutch pack failure?
Overheating, contaminated fluid, high mileage wear, and towing beyond the vehicle rating are common causes.
Can I tow with this code?
Absolutely not. Towing with low clutch pressure will cause rapid and catastrophic transmission failure.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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