P0441

Evaporative Emission Control System Incorrect Purge Flow

OBD-II diagnostic trouble code P0441indicates a fault detected by the vehicle's onboard computer. This code applies to all OBD-II compliant vehicles and should be addressed promptly to avoid potential engine or emissions system damage.

Severity Level 3 — Moderate

This code indicates a moderate issue that may affect vehicle performance and fuel economy. Continued driving is possible in most cases, but prompt diagnosis and repair are recommended to prevent further damage.

Common Symptoms

• Check Engine Light on
• Slight fuel odor from engine bay
• No significant driveability issues
• Rough idle in some cases (if purge valve stuck open)
• Failed emissions test

Possible Causes

• Faulty EVAP purge valve — stuck closed (no flow) or stuck open (constant flow causing vacuum leak)
• Clogged charcoal canister — saturated with liquid fuel from topping off the tank
• Cracked or disconnected purge hose between valve and intake manifold
• Faulty EVAP pressure sensor reporting incorrect system pressure
• Wiring or connector issue at purge valve

Common Fixes

• Replace EVAP purge valve/solenoid ($50-200, often a 10-minute DIY job)
• Replace charcoal canister if fuel-saturated ($200-600)
• Replace cracked or disconnected purge hose ($10-50 each)
• Replace EVAP system pressure sensor ($60-200)
• Clear EVAP system lines of obstruction ($50-150 diagnostic labor)

Estimated Repair Cost

These are estimated costs based on generic repair data. Actual costs may vary depending on your vehicle, location, and labor rates.

Explore Repair Costs

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