P1828: Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure

FORD LINCOLN MERCURY OTHER VOLKSWAGEN

Severity

Medium

System

Manufacturer-Specific Powertrain

Last reviewed: Jan 1, 0001 Last updated: Jan 1, 0001

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P1828 Mean?

P1828 is a manufacturer-specific diagnostic trouble code: Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure. This code applies to FORD, LINCOLN, MERCURY, OTHER, VOLKSWAGEN 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 P1828

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

Common Causes

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

Frequently Asked Questions

What does P1828 mean?

P1828 indicates: Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure. The vehicle's computer has detected that the Transmission Transfer Case Counter Clockwise Shift Relay Coil is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1828?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1828 for extended periods may cause additional problems.

How much does it cost to fix P1828?

Repair costs for P1828 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 wiring and connectors
🔧 Replace faulty Transmission Transfer Case Counter Clockwise Shift Relay Coil

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.