The engine C1270 looks like a type of chassis problem and it is easy to solve. The Chassis problem is very easy to solve. The method of deactivation of cylinders is reached by releasing a synchronizer pin that normally joins the cam follower and the rocker arms. The engine C1270 code tenacities the synchronizer pin is unrestricted using hydraulic compression which is controlled by a devoted solenoid. The catalytic converter has an oxygen sensor what is set in front and behind it. When the car is warm and it is running at a closed loop mode, the upstream oxygen sensor waveform reading should alter.