Process to attempt to clear the message on the L5P Dash
It is important to note that we do not control the Dash with tuning, but a majority of vehicles this will work.
Please verify that the throttle body is plugged in our your L5P as something as simple as that can also cause the message.
- Verify the NOX sensors and DEF tank is plugged in as it should be at stock.
- Fill DEF tank until it is at least 50% full if its empty or low.
- Flash stock file in ECM.
- Go into VCM Scanner and clear codes.
- Flash your file back into the truck.
- Remove battery ground cables.
- Unplug the correlated plugs where CAN Bus Plugs should be connected and connect the CAN bus plugs found HERE (17-19 Trucks) or HERE (20+ trucks)
- Hook up battery cables.
- Start the vehicle and check for the message on the dash.