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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Control System & Fuel System - 6.6L (LLY) - DTC P0401 To DTC P2510) >> DTC P2122, P2123, P2127, P2128, or P2138 >> Conditions for Setting the DTC >> P2128

Conditions for Setting the DTC: P2128

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The ECM detects that the APP sensor 2 voltage is more than 2.5 volts for more than 0.2 second.