Tech A says that a defective crankshaft or camshaft position sensor can prevent an engine from starting. Tech B says that if a diagnostic trouble code (DTC) indicates a problem with the crankshaft or camshaft position sensor, you will always have to replace the sensor. Who is correct

"Tech A" will be the correct answer.

Explanation:

A camshaft location indicator has been used on several applications with fewer transformer ignition systems or coils and manual fuel injection to maintain the management of engine module aware regarding the current camshaft position concerning either the crankshaft.

The faulty location sensor for the camshaft or crankshaft may preclude a motor from the beginning. The process and treatment for either a crankshaft location detector or sensor are in principle almost the same.