So, I unplugged my SAI pump in an attempt to diagnose an FL2 fault, was blowing frequently. The RAVE does not indicate what is fed by the FL2, only the glow plug on diesel.

The last week or two it has been unplugged. Makes me believe that the Pump is failed, as I have not noticed a change in sounds. I believe i have not heard it run, ever. I am going to jump it and see if that is that case.

Now i get the p1415 and p1412 codes, despite the SAI pump not being connected. What is causing this? Why would it have codes when not plugged in? It seems to me that there should other codes aswell no?

Thanks for the thoughts.

 

P1412 is SAI fault on Bank 1, P1415 is Bank 2. Basically means you are not getting any air injection into either header. In your case, since the pump is not blowing.

If these showed up only after you unplugged the pump, it was prob working as it should.

I got these two codes once. In my case the vacuum line to the reservoir mounted near the pump had cracked so the header valves would not open.

 

Still get sporadic p1415 and 1412 codes, with the pump unplugged.

The next thing is to test the SAI pump and look for a leak.