PO411 Code - Air Pump Relay Location???

**jppcld** · 06-12-2012

I have a 2005 Grand Prix GT with a PO 411 code. I have replaced the solenoid valve and the air pump and still have the code. The fuse is good and the pump comes on when I manually jumper it. Read it could be the air pump relay, but have no idea where it is. I read one saying behind the bumper on drivers side of a 2000 Grand Prix, but I can't see it on my 05. Can some one tell me for sure where this relay is or if they have any other ideas. Thanks.

**Pure2sin** · 06-12-2012

Under the hood..The top fuse box on the passenger side of the car....Upper right inside the fuse box IIRC.

Might be different because it's an 05 but I would check that first. It should have the labels for the relays and fuses on the fuse box panel.

**Poil336** · 06-12-2012

woah... you have an air pump?

but yeah, the relay would most likely be in the underhood fuse block. jump terminals 30 and 87 and the pump should turn on

did a quick search of the code on service information, P0411 is set when supply voltage to any of the components is either open/high resistance or shorted to ground. meaning either the relay, solenoid, or pump itself isn't getting power and you're looking for a wiring problem on that side of the circuit. i can copy and paste the diagnostic procedure if you'd like

**jppcld** · 06-13-2012

Finally found the relay, it is under the hood on the drivers side right next to the air intake system and the wheel/fender for my 05. Was able to jump the new pump between 87 & 30 and it came right on as well as actuate the valve as well so hopefully I will be all set after I get the realy in tonight. Well provide an update tomorrow. Thanks for the responses.

**jppcld** · 06-19-2012

replaced the air pump relay and it still threw a po411 code the next day. running out of components to replace on the system. it looks like there is also a secondary air injection valve relay in there as well, but the terminals are dofferent from the pump relay I just replaced. guess I will try that next. any other ideas, running out of time to get a sticker on the car.