Hi my nissan altima 2005 has a code 520 who do I fixed that problem

Question

I'm change the spark plug s and the sensors po 725 and po 335.

Answer 1

There is no P0520 code for the Nissan Altima.

 

For the P0725: P0725 2005 Nissan Altima Sedan - Engine Speed Signal

 

Read more: https://www.autocodes.com/p0725_2005_nissan_altima_sedan.html

 

For the P0335: P0335 2005 Nissan Altima Sedan - Crankshaft Position Sensor Circuit

 

Read more: https://www.autocodes.com/p0335_2005_nissan_altima_sedan.html

 

Both codes point to a bad Crankshaft Position Sensor, you should replace the sensor.