What is code for crank sensor on a 2005 Kia Optima?

The trouble code for a crankshaft position sensor on a 2005 Kia Optima is typically P0335, which indicates a malfunction in the crankshaft position sensor circuit. Other related codes may include P0336 and P0337, which correspond to performance issues and sensor range problems, respectively. If you encounter these codes, it's advisable to check the sensor and its wiring for faults or damage.