So my Emissions are due in a week, and I'm getting these two codes when I scan using torque: P2400 and P1477. Both were regarding the Evap pump from what I remember, but that's about all I know about it. How do I fix this?

Thanks a lot

 

P2400 Evaporative emission system leak detection pump control circuit open
P1477 Leakage diagnostic pump reed switch did not open

There's always the option of checking the connections. If everything is fine and connected with no corrosion on the connectors pins, you might be looking at replacing the pump itself. Not sure if there's conventional methods to check it other than running a test with a proper BMW scanner. I've seen some people on here that had to replace the pump, not really a common issue, but you wouldn't be the first.

 

Okay, I'm going to take it apart tomorrow and see if anything changes. Thanks for the schematic man

 

Check where the wiring is pinned to the frame. I had a wire wear through on my R56. It was clipped onto the rear subframe. Prompted me to check the wiring on the R53 and all is good.

 

Check the two small/thin vacuum tubes located under the intercooler.

I had the same code as you, P1477. Replacing those tubes sorted it out (the rubber connectors disintegrate due to the heat and oil)..

The LDP pressurizes the vacuum system, (Can't remember how many drive cycles it takes) if there is a leak, It gives the P1477 code. Basically it's doing exactly what it's supposed to be doing. Testing the vacuum system.

One tube is under the fuel rail valve in the center of the rail.

The other is under the large horn above the I/M.

Besides that, check all of the larger vacuum tube's.

I didn't wanna start fiddling around at the gas tank, (The LDP on the gen 1 is a PIA to get too) until i was sure all the tubes up front were sorted. Nothing moves back there and it's not that hot. Stands a chance the problem is at the front of the car.

 

Have had the same codes pop up for almost a year now
Didnt notice any change in driveability so I left them as is ... will def look at the vacuum lines now

 

Doesn't MINI USA have a 10 years/100,000 miles Emission Warranty?

This may be covered depending on your model year and mileage.

 

Stoker, you're saying that the code for the LDP could be a vacuum issue? I know my vacuum line from the s/c to the map sensor is broken, and I just ordered a replacement today.

 

I had a buddy clear the codes, and my exhaust leak and map sensor codes have been gone for a week. Ordered the wrong evap pump so I ran out of time and am at the dealer now for a $500 fix....

 

There are some other threads on this. I had the code for the last 6 months and it healed itself last week??? I had already ordered a new LD pump because it seems to be a fairly likely cause once you have eliminated the gas tank cap, the evap valve at the engine and the vac tubes at the engine. I imagine it will be back.
The pump can be bought for about $120 from Sewellparts.
You may want to get a shop to do a smoke test before throwing parts at the issue though or you can end up replacing stuff that is fine.
Also the pump itself can leak. Some have had luck by disassembling it and coating the o-rings with vasoline to get a better seal. That didn't work for me and I cracked some tabs getting it apart so I went ahead and got a new one. Hopefully I won't need it.
To recap start with:
gas cap
evap valve
vac lines in engine bay
vac lines near charcoal canister and LD pump
LD pump
canister

 

If time permitted I would have done that but it's a bit late now.

The other threads are still pretty vague and didn't answer my question, which is why I posted a new thread.

 

So, I just did this on our 2005 r53 (108k). I got a new pump, but found that the wiring rubbed one the edge of the pump, and a tie wrap - from mini - . All fixed now. The 2400 + the 1477 is telling you that there is problem in the pump circuit.

 

I have a brand new oem BMW pump in the box for $125 shipped free in the USA lower 48 if anybody needs one?