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Home >> Isuzu >> 2006 >> Ascender S, 4.2 S, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.2L - DTC P2101 To P2444 >> DTC P2440 >> DTC Descriptor
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DTC Descriptor

DTC P2440

Secondary Air Injection System Switching Valve A Stuck Open