The mening of the B2402 Code is necessary thing and this code is related with the body of the car engine. The code is identified as an engine area code. When code comes on the engine code reader, then it is recognized that where the main problem is. The body of the engine is easy to fix and no component is necessary to change for solving the engine problem. You must read the manual of the car engine for getting more information about the engine problem. Some expensive machines are used for solving the engine problem mad if you do not have all machines, then do not try to fix the car engine problem.