N75 Valve Question/Location

Here is my fault code: 99.5 Jetta TDI

17958 - Charge Pressure: Control Deviation
P1550 - 35-10 - - - Intermittent

I have the new valve but I am not sure which one it is on the firewall? There are two one to the left and one to the right. Does any on know or have a pic?

Many Thanks

free bump

I'm not sure exactly whether it's the left or right, but here's how you can find out.

With you engine cool, reach around the back of the engine on the passenger side and locate the turbo. Move your hand down the turbo until you locate the round canister type object on the bottom. There will be a vacuum line plugged into the bottom of it. This is the vacuum line which runs to the N75 valve to actuate the turbo. Follow this vacuum line and it will lead you to the N75.

Thanks I will try that!!!

I just posted a similar question...i have the same code...i have already changed the N75 but still the problem persists.

I thought it was the one with the grey top, the other being black.
I'm not certain if this applies to the OP's older Jetta.

See post # 9. Canadian Grizzly also has a good write up concerning limp mode diagnosis. http://forums.tdiclub.com/showthread.php?t=176941&highlight=grey+N75

Thanks Guys!!!

Welcome...let us know how it works out or if you need more help.