P0413 Secondary Air Injection System Switching Valve 'A' Circu

[John House]

P0413 Generic Secondary Air Injection System Switching Valve 'A' Circuit Open

 

I got this code 3 days ago after the dealership replaced a relay and mass flow air pump. How can I fix this on my own?

 

Also the Vehicle Four Wheel Drive System Faulty light comes on and off. How can I fix this problem?

 

 

 

2006 Porsche Cayenne

[hahnmgh63]

Do you mean the Mass Flow sensor? No Mass Flow pump that I know of. What relay did they replace?  Need the scan of the 4wd/transfer case but the transfer case stepper motors are known to go bad but not very common on '06 and later ones as they had later revision/improved? motors supposedly. On the earlier ones Porsche recommended replacing the motor with a new control module but I think that was only for the '03/'04 years as your '06 would probably have the newer software. Really can't be sure without a scan. Have you tried to engage/disengage your center differential?

[Loren]

P0413 Secondary-air solenoid valve driver – open circuit

 

Possible cause of fault

- Fuse F50 faulty (fuse carrier on left of dashboard)

- Open circuit in voltage supply in secondary-air solenoid valve

- Open circuit in ground supply in secondary-air solenoid valve

- Secondary-air solenoid valve faulty (resistance too great)

- DME control module faulty

 

Always start with the fuse.