Diagnostic Fault Information
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC P2120, P2122, P2123, P2125, P2127, P2128, or P2138
| Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
| APP Sensor 1 Signal | P2122 | P2138 | P2122 | P2123 | - |
| APP Sensor 1 5-Volt Reference | P2122 | P2138 | P2122 | P2123 | - |
| APP Sensor 1 Low Reference | - | P2138 | P2123 | - | - |
| APP Sensor 2 Signal | P2127 | P2138 | P2127 | P2128 | - |
| APP Sensor 2 5-Volt Reference | P2127 | P2138 | P2127 | P2128 | - |
| APP Sensor 2 Low Reference | - | P2138 | P2128 | - | - |