Question

2003 BMW 330xi with engine code P0721, how do I fix it?

Answer 1

P0721 output speed sensor range/ performance,  whenever I come across this code on a BMW, I dont even question the code, I just replace the sensor itself,and clear the code.its practically the only thing that goes wrong with the BMW

Answer 2

P0721 BMW - Output Speed Sensor Range/Performance

Read more: https://www.autocodes.com/p0721_bmw.html