C00A5 — Driveline Control Module Transfer Case Unit Control Circuit Driver

What Does C00A5 Mean?

C00A5 is a diagnostic trouble code indicating: Driveline Control Module Transfer Case Unit Control Circuit Driver. This code relates to the chassis system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of C00A5

⚠️ Check Engine Light (MIL) illuminated
⚠️ Erratic Driveline Control Module Transfer Case Unit readings
⚠️ Related system operating intermittently
⚠️ ABS or stability control warning light

Common Causes

🔍 Wiring issue in Driveline Control Module Transfer Case Unit circuit (damaged, chafed, or corroded)
🔍 Faulty Driveline Control Module Transfer Case Unit connector or terminal
🔍 Failed Driveline Control Module Transfer Case Unit
🔍 ECM/PCM connection issue

Frequently Asked Questions

What does C00A5 mean?

C00A5 indicates: Driveline Control Module Transfer Case Unit Control Circuit Driver. The vehicle's computer has detected that the Driveline Control Module Transfer Case Unit is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code C00A5?

Only short distances if absolutely necessary. C00A5 affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix C00A5?

Repair costs for C00A5 typically range from $100 to $400, 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 Driveline Control Module Transfer Case Unit wiring and connectors
🔧 Replace faulty Driveline Control Module Transfer Case Unit

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.

C00A5: Driveline Control Module Transfer Case Unit Control Circuit Driver