C004D — Brake System Pressure Slow Response

What Does C004D Mean?

C004D is a diagnostic trouble code indicating: Brake System Pressure Slow Response. This code relates to the chassis system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of C004D

⚠️ Check Engine Light (MIL) illuminated
⚠️ Brake System Pressure Slow Response not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ ABS or stability control warning light

Common Causes

🔍 Faulty Brake System Pressure Slow Response
🔍 Wiring or connector issue in Brake System Pressure Slow Response circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does C004D mean?

C004D indicates: Brake System Pressure Slow Response. The vehicle's computer has detected that the Brake System Pressure Slow Response is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code C004D?

Only short distances if absolutely necessary. C004D affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix C004D?

Repair costs for C004D 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 Brake System Pressure Slow Response and related wiring
🔧 Replace faulty Brake System Pressure Slow Response

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.

C004D: Brake System Pressure Slow Response