P025F: Turbocharger/Supercharger Boost Sensor B Intermittent/Erratic

Severity

Medium

System

Fuel Injection

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 P025F Mean?

P025F is a diagnostic trouble code indicating: Turbocharger/Supercharger Boost Sensor B Intermittent/Erratic. This code relates to the fuel injection system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P025F

⚠️ Check Engine Light (MIL) illuminated
⚠️ Turbocharger/Supercharger Boost Sensor B signal cutting in and out
⚠️ Related system working sometimes but not consistently
⚠️ Engine hesitation or stumble

Common Causes

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

Frequently Asked Questions

What does P025F mean?

P025F indicates: Turbocharger/Supercharger Boost Sensor B Intermittent/Erratic. The vehicle's computer has detected that the Turbocharger/Supercharger Boost Sensor B is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P025F?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P025F for extended periods may cause additional problems.

How much does it cost to fix P025F?

Repair costs for P025F 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 Sensor B connectors
🔧 Repair chafed or damaged wiring in Turbocharger/Supercharger Boost Sensor B circuit
🔧 Replace Turbocharger/Supercharger Boost Sensor 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.

Related Codes

P0200 Injector Circuit/Open P0201 Cylinder 1 Injector A Circuit P0202 Cylinder 2 Injector A Circuit P0203 Cylinder 3 Injector A Circuit P0204 Cylinder 4 Injector A Circuit P0205 Cylinder 5 Injector A Circuit P0206 Cylinder 6 Injector A Circuit P0207 Cylinder 7 Injector A Circuit P0208 Cylinder 8 Injector A Circuit P0209 Cylinder 9 Injector A Circuit