Conditions for Running the DTC
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
P2120, P2122, P2123, P2125, P2127, P2128
- DTC P0641 and P0651 are not set.
- The run/crank or powertrain relay voltage is greater than 6 V and reduced power is not active.
- The ignition is in the Unlock/Accessory or Run position.
- DTC P2120, P2122, P2123, P2125, P2127, P2128 run continuously when the above conditions are met.
P2138
- DTC P0641, P0651, P2120, P2125 are not set.
- The system voltage is greater than 5.23 V.
- The ignition is in the Unlock/Accessory or Run position.
- DTC P2138 runs continuously when the above conditions are met.