4 fault codes after getting car back

[Dominic123]

Very unhappy with my recent visits(s) to independent Porsche tech; received car back after they installed a new fuel sending unit seeing there was a 0442 code; the next day after receiving car back check engine light came on with following codes:

0492

0491

0071

0074

Any suggestion what it could be; maybe something unplugged? I don't want to take it back there just for them to start replacing everything; $3K last week was enough.

Any help or input would be appreciated

[Loren]

 

P0071 Fault entry in specified control module

P0074 Fault entry in specified control module

 

Possible fault causes

- Control module is incorrectly coded

- Periphery connected to specified control module is incorrect

- Control module faulty (in most cases the cause is not the control module but incorrect coding!)

 

P0491 Secondary-air system

P0492 Secondary-air system

 

Possible fault causes

- Secondary air pump relay mechanically faulty (jams)

- Power supply for secondary air pump faulty

- Air duct cross section narrowed (pinched / blocked)

- Electric switch-over valve does not function

- Pneumatic switch-over valve does not function

- Leak in vacuum system

- Secondary air pump electrically or mechanically faulty

 

Take it back and have them correct the faults.