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Home >> Chevrolet >> 2011 >> Suburban K2500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 1753 (Engine Controls And Fuel - Hybrid (LZ1) - DTC P0351 Through DTC P3449 And Troubleshooting) >> Diagnostic Information and Procedures >> DTC P2120, P2122, P2123, P2125, P2127, P2128, or P2138 >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

P2120 

The APP sensor 1 voltage is less than 0.325 V, or greater than 4.75 V for greater than 0.4 s.

P2122 

The ECM detects that the APP sensor 1 voltage is less than 0.325 V for greater than 0.4 s.

P2123 

The ECM detects that the APP sensor 1 voltage is greater than 4.75 V for greater than 0.4 s.

P2125 

The APP sensor 2 voltage is less than 0.325 V, or greater than 4.75 V for greater than 0.4 s.

P2127 

The ECM detects that the APP sensor 2 voltage is less than 0.325 V for greater than 0.4 s.

P2128 

The ECM detects that the APP sensor 2 voltage is greater than 4.75 V for greater than 0.4 s.

P2138 

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

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