P1831 — Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground

What Does P1831 Mean?

P1831 is a manufacturer-specific diagnostic trouble code: Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground. This code applies to OTHER, BUICK, CADILLAC, CHEVY, GM 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 P1831

⚠️ Check Engine Light (MIL) illuminated
⚠️ Erratic Transmission Transfer Case Counter Clockwise Shift Relay Coil Short readings
⚠️ Related system operating intermittently
⚠️ Reduced engine performance

Common Causes

🔍 Wiring issue in Transmission Transfer Case Counter Clockwise Shift Relay Coil Short circuit (damaged, chafed, or corroded)
🔍 Faulty Transmission Transfer Case Counter Clockwise Shift Relay Coil Short connector or terminal
🔍 Failed Transmission Transfer Case Counter Clockwise Shift Relay Coil Short
🔍 ECM/PCM connection issue

Frequently Asked Questions

What does P1831 mean?

P1831 indicates: Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground. The vehicle's computer has detected that the Transmission Transfer Case Counter Clockwise Shift Relay Coil Short is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1831?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1831 for extended periods may cause additional problems.

How much does it cost to fix P1831?

Repair costs for P1831 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 and repair Transmission Transfer Case Counter Clockwise Shift Relay Coil Short wiring and connectors
🔧 Replace faulty Transmission Transfer Case Counter Clockwise Shift Relay Coil Short

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.

P1831: Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground