Help needed : P0492 Secondary Air Injection system insufficient flow

[mazingerv1]

I read the codes with a OBDII scanner and got a P0492 Secondary Air Injection system insufficient flow.

My Cayenne S 2003 works fine overall, but it stalls at idle intermittently.

It happened a few times e.g. waiting at traffic light, moving slowly at traffic jam....etc, no noticeable pattern.

it stalls suddenlyonly at low speed, no problem with high speed.

any fix or relevant info would be much appreciated !!

[Loren]

P0492 Secondary Air Injection System, Bank 2 - Insufficient Flow

Possible cause of fault- Electrical fault in power supply or line between relay and secondary air injection pump- Secondary air injection pump relay mechanically faulty- Mechanical fault in electrical secondary air valve- Pneumatic secondary air valve faulty/sluggish- Electrical fault in secondary air injection pump- Mechanical fault in secondary air injection pump or secondary air injection pump blocked- Vacuum system leaking- Air hose to secondary air injection pump slipped off or constricted

[mazingerv1]

Thanks Loren !

i put up another post on the engine compartment fuse box.

I tried to located the fuse, but couldn't locate the fuse box.

Pls help.

Thx much!

[mazingerv1]

I found the F4 fuse, it was blown. I replaced it.

let's see whether it will still stall.

if it doesn't stall anymore, I would like to donate to this site.

[wvicary]

Secondary Air Injection faults shouldn't cause a engine stall unless you have a massive vacuum leak then should have other codes also.

[mazingerv1]

The fuse F4 was replaced, the car intermittently cranks. "PSM failure workshop" appears on the dashboardWhen I read the code again, I got P0335 pending Crankshaft position sensor "A" circuit.What does that mean? Any relevant info is appreciated!