The engine B2606 Code has verities of meanings and it is necessary to get the real meaning of the car engine. The real meaning is linked with the car manufacturer and car model. If you do not get the real meaning, you do not try to fix the car engine. You have to find the meaning of the code according to your car. Do not follow the meaning of the code from different car manufacturer or automobile dictionary meaning of the code. You have to follow the meaning what your car manufacturer has set. Do not driver the car with the problematic engine and fixing it properly is necesary.