P1864 — Transmission Transfer Case Contact Plate Power Short To Battery

What Does P1864 Mean?

P1864 is a manufacturer-specific diagnostic trouble code: Transmission Transfer Case Contact Plate Power Short To Battery. This code applies to OTHER, VOLKSWAGEN, BUICK, CADILLAC, CHEVY vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1864

⚠️ Check Engine Light (MIL) illuminated
⚠️ Transmission Transfer Case Contact Plate Power not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Transmission Transfer Case Contact Plate Power
🔍 Wiring or connector issue in Transmission Transfer Case Contact Plate Power circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1864 mean?

P1864 indicates: Transmission Transfer Case Contact Plate Power Short To Battery. The vehicle's computer has detected that the Transmission Transfer Case Contact Plate Power is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1864?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1864 for extended periods may cause additional problems.

How much does it cost to fix P1864?

Repair costs for P1864 typically range from $80 to $300, 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 Transmission Transfer Case Contact Plate Power and related wiring
🔧 Replace faulty Transmission Transfer Case Contact Plate Power

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P1864: Transmission Transfer Case Contact Plate Power Short To Battery