Have an intermittent EML light. Mechanic read these codes when servicing

 

16795 - Secondary Air Injection System incorrect flow detected P0411 - intermittent

17705 - Pressure drop between turbo and throttle valve P1297 - Intermittent

 

o2 sensor (genuine) and some of the breathers were replaced last year.

 

Hoping someone will know what's likely at fault here before starting to replace things unneccessarily.

 

Cheers in advance 😀

Ok so it's looking like it's the secondary air pump that's the issue. I priced a genuine one and it's silly money.

 

Has anyone used a spurious one that was ok.........................or gone done the road of a delete and remap?