This B2523 Code is related with the car engine and this code comes when the car engine is tested. The car engine is problematic and that is why, the code appears on the car engine code reader. The meaning of the code is essential for solving the car engine problem. If you do not fix the car engine problem, do not drive the car. The genuine meaning of the code is linked with the car manufacturer and model. If the car engine is fixed, then a test drive is recommended for testing. If the car engine is ok, you can drive properly.