2.0 LITER CODE CYMC. 2.0 LITER. 2.0 LITER Gas. A electronic device used in an internal combustion engine to monitor the position or rotational speed of the crankshaft while this information is used by engine management systems to control the fuel injection or the ignition system timing and other engine parameters. From 04/17/2017. To 04/17/2017. Type 1. Camshaft sensor. Engine Crankshaft Position Sensor. Sender.