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Home >> Chevrolet >> 2006 >> Chevy Express G2500, Van Cargo Extended, 6.6 2 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 6.6L (LLY) - DTC P0401 To DTC P268A >> DTC P0401 >> Circuit/System Testing

Circuit/System Testing

Inspect the air induction system for air leaks.

If no problem is found perform the component testing.

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