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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 81 (Engine Controls And Fuel - 1.6L (LWC) - DTC P0243 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2122, P2123, P2127, P2128, or P2138 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

P2122 

The ECM detects the APP sensor 1 voltage is less than 0.46 V for greater than 1 s.

P2123 

The ECM detects the APP sensor 1 voltage is greater than 4.75 V for greater than 1 s.

P2127 

The ECM detects the APP sensor 2 voltage is less than 0.32 V for greater than 1 s.

P2128 

The ECM detects the APP sensor 2 voltage is greater than 2.6 V for greater than 1 s.

P2138 

The ECM detects the voltage difference between APP sensor 1 and APP sensor 2 exceeds a predetermined value for greater than 1 s.

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