P0335 Hyundai Code - Crankshaft Position Sensor 'A' Circuit/how to diagnosis this DTC

P0335 Hyundai Code - Crankshaft Position Sensor 'A' Circuit
What are the Possible Causes of the DTC P0335 Hyundai?
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
Faulty crankshaft position sensor
Crankshaft position sensor harness is open or shorted
Crankshaft position sensor circuit poor electrical connection
Signal plate may be damage
Starter motor may be faulty
Starting system circuit
Dead or weak battery
Code Tech Notes
Sometimes and in some models, low battery voltage or a weak starter can trigger a Crankshaft Position Sensor code. Before replacing any parts, recharge or replaced battery.
2004 Hyundai Sonata V6 2.7 crankshaft position sensor location and replacement codes P0335 and P1372
When is the Code Detected?
The crankshaft position sensor (POS) signal is not detected by the Electronic Control Module (ECM) during the first few seconds of engine cranking
What are Code Possible Symptoms?
Engine Light ON (or Service Engine Soon Warning Light)
Engine Lack / Loss of Power
Engine may stall while driving
What Does the P0335 Hyundai Code Mean?
The Crankshaft Position Sensor (CKP) also known as the crank position sensor is an electronic device used in an engine to record the rate at which the crankshaft is spinning. This information is used by the Electronic Control Module(ECM) to control ignition and fuel injection. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change.