The code B1218 is used for faulty engine and the description of the B1218 Code is different which rely of the manufacture and model of the car. The error code B1218 is the main thing what comes to verify the operation of the VCT solenoid. You are looking for a stabbing or stuck VCR solenoid valve reason by infection. It refers to vehicle certain repair manual to achieve element tests for the VCT unit. It is necessary to be careful when you test the engine. You should also use manual properly if you want correct solution of the car. The PCM sums the number of times car speed changes from 0 to a calibratable speed.