P004F — Turbocharger/Supercharger Boost Control B Circuit Intermittent/Erratic

What Does P004F Mean?

P004F is a diagnostic trouble code indicating: Turbocharger/Supercharger Boost Control B Circuit Intermittent/Erratic. This code relates to the fuel and air metering system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P004F

⚠️ Check Engine Light (MIL) illuminated
⚠️ Turbocharger/Supercharger Boost Control B signal cutting in and out
⚠️ Related system working sometimes but not consistently
⚠️ Poor fuel economy

Common Causes

🔍 Loose or intermittent connection at Turbocharger/Supercharger Boost Control B
🔍 Wire chafing causing intermittent contact
🔍 Turbocharger/Supercharger Boost Control B failing under heat or vibration
🔍 Corroded connector pins with partial contact

Frequently Asked Questions

What does P004F mean?

P004F indicates: Turbocharger/Supercharger Boost Control B Circuit Intermittent/Erratic. The vehicle's computer has detected that the Turbocharger/Supercharger Boost Control B is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P004F?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P004F for extended periods may cause additional problems.

How much does it cost to fix P004F?

Repair costs for P004F typically range from $30 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 reseat all Turbocharger/Supercharger Boost Control B connectors
🔧 Repair chafed or damaged wiring in Turbocharger/Supercharger Boost Control B circuit
🔧 Replace Turbocharger/Supercharger Boost Control B if failing intermittently

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.

P004F: Turbocharger/Supercharger Boost Control B Circuit Intermittent/Erratic