The Crank Angle Sensor (CAS) is one of the most critical inputs to the engine management system. By monitoring crankshaft position and rotational speed, it provides the ECU with the information required to control ignition timing and fuel injection events accurately.

A faulty crank angle sensor can cause hard starting, misfires, engine stalling, or a complete no-start condition. Whether you’re replacing an OEM sensor or building a performance engine management system, accurate crank position data is essential for reliable engine operation and tuning.