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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Control System & Fuel System - 4.8L, 5.3L, And 6.0L - DTC P0452 To DTC P2135) >> DTC P1400 >> Circuit/System Verification

Circuit/System Verification

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Allow the engine to cool. Start and idle the engine for at least 2 minutes. DTC P1400 should run and pass.