Vcds error codes

[vwgtiking]

Engine mgt came on the gfs car. Did a scan with vcds and came up with the following error codes

17831 & 16524

Any help would be great.

 

[vwgtiking]

Anyone?

 

[LeoAlteaFSI]

17831/P1423/005155 - Secondary Air Injection System; Bank 1: Insufficient Flow

Possible Symptoms
Malfunction Indicator Light (MIL) active

Possible Causes
Fuse for Secondary Air Injection Pump blown
Vacuum Hose(s) leaky or collapsed
Piping between Secondary Air Injection Pump and Combi (Secondary Air Injection) Valve leaking
Secondary Air Injection Solenoid(s) faulty
Combi Valve(s) faulty

Possible Solutions
Check Fuse for Secondary Air Injection Pump
Check Vacuum Hose(s)
Check Piping between Secondary Air Injection Pump and Combi (Secondary Air Injection) Valve
Check Secondary Air Injection Solenoid(s)
Check Combi Valve(s)



16524/P0140/000320 - Oxygen (Lambda) Sensor B1 S2: No Activity

Possible Symptoms
Malfunction Indicator Light (MIL) faulty

Possible Causes
Wiring/Connectors from/to Oxygen (Lambda) Sensor Bank 1 Sensor 2 faulty
Oxygen (Lambda) Sensor Bank 1 Sensor 2 faulty

Possible Solutions
Check Wiring/Connectors from/to Oxygen (Lambda) Sensor Bank 1 Sensor 2
Check Oxygen (Lambda) Sensor Bank 1 Sensor 2

 

[vwgtiking]

Changed pump and still failing. Where is the solenoid??

 

[vwgtiking]

Have a checked valve as per this guide and valve seems fine.

http://workshop-manuals.com/audi/a3..._air_system_for_proper_operation_and_leakage/

 

[vwgtiking]

Started from cold overnight standing with new pump and I couldn't hear the pump starting or working. I've checked fuses in engine bay and none are blown. Relays seem to be working. What actually tells the pump the to turn on from cold??? Maybe that's broken??

 

[vwgtiking]

Up??