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P0449 — EVAP Vent Valve/Solenoid Circuit

EVAP vent valve solenoid circuit fault.

Severity: LowRepair: $50-$250Difficulty: Easy

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Common symptoms of P0449

Common causes of P0449

Repair cost & difficulty

Typical cost to fix P0449: $50-$250 · Difficulty: Easy

Pro tip: On GM trucks, this is very common. Vent valve is near fuel tank, $30-50 part, 20 min to replace.

Vehicles commonly affected

All makes — very common on GM trucks/SUVs

Related trouble codes

P0446P0440

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.