Yesterday I shut the engine off the odometer was still lit so I pushed the odometer reset to reset my trip meter. Well it didn't work because I didn't have the key on so I turned the key forward with the reset button pushed. Well the tach and speedometer went all the way up as the dash lit up and then went slowly back down. The odometer said C-code. What does this mean? I have not had any problems with my truck. Thanks

 

It just a self test that you actuated.

 

OK Thanks..