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Home >> Chevrolet >> 2009 >> HHR SS, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 2.2L Or 2.4L - DTC P0351 To DTC P2544) >> DTC P2120, P2122, P2123, P2125, P2127, P2128, or P2138 (2.2L) >> Conditions for Setting the DTC (2.2L) >> P2123

Conditions for Setting the DTC (2.2L): P2123

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The ECM detects that the APP sensor 1 voltage is more than 4.87 volts for more than 0.4 second.