My 2001 X5 is due for a CA smog inspection so I check the car with my OBDII scanner and found that the car is throwing code: P0014 B Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

The car seems to be running normally.

Will this affect the smog check in California?

Since the car is running "normally" is this an indication of a failing sensor?

Does anyone have the DIY instructions for the sensor change and the location of this sensor?

Should I replace both sensors if one is failing?

Your help would be appreciated...thanks.