C0618 — Park Brake Control Module Control Circuit High

What Does C0618 Mean?

C0618 is a diagnostic trouble code indicating: Park Brake Control Module Control Circuit High. This code relates to the chassis system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of C0618

⚠️ Check Engine Light (MIL) illuminated
⚠️ Park Brake Control Module reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ ABS or stability control warning light

Common Causes

🔍 Short to voltage in Park Brake Control Module wiring harness
🔍 Corroded or water-damaged Park Brake Control Module connector
🔍 Faulty Park Brake Control Module outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does C0618 mean?

C0618 indicates: Park Brake Control Module Control Circuit High. The vehicle's computer has detected that the Park Brake Control Module is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code C0618?

Only short distances if absolutely necessary. C0618 affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix C0618?

Repair costs for C0618 typically range from $20 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 Park Brake Control Module wiring for short to voltage
🔧 Clean or replace corroded Park Brake Control Module connector
🔧 Replace faulty Park Brake Control Module

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.

C0618: Park Brake Control Module Control Circuit High