What are the solutions for the P0321 trouble code?

[OHenry]

Solutions for the P0321 trouble code include: 1. Replace the speed sensor: Use a resistance meter to measure the resistance between the two terminals of the sensor. The normal value should generally be between 0.7 and 1.2. If the reading is outside the specified range, it indicates that the sensor is damaged and should be replaced. 2. Check wiring connections: Inspect the component for any visible damage, check the wiring for breaks or damage, and ensure the connections are secure. 3. Clear the code: After troubleshooting the car issue, the trouble code needs to be cleared. When clearing the code, it is essential to follow the specified method outlined in the vehicle's manual for clearing trouble codes. Do not attempt to clear the code without following the instructions and requirements.