The meaning of the B2115 Code is associated with the vehicle engine and if you want to fix the car engine problem, then take car to automobile repair store. Do not try to solve the problem from the car engine. Due to this engine problem parts or components should not be changed with reference to only a code B2115. The vehicle service manual should be read for more information related with the problem on possible causes of the fault of the car engine, along with mandatory testing. The dictionary meaning for the code is not everything but you can know about it.