Happy owner of Foxwell NT500

**WinDrop** · 20-12-2014,11:37 AM

Hi Guys,

I bought Foxwell NT500 VAG Scanner which as far as I read is one of the best ones out there.
Scanned my car (VW Passat 2007 2.0L) and found couple of codes.
Because I'm new with Foxwell device I accidantly deleted all codes before I actually managed to read them all however saw that there were errors within Immobilizer, CAN gateway and Engine.

The one in Engine code was saying something like Mass air flow sensor 00258 (G72) Open or short to ground

What is this?
How can I fix it?
I haven't managed to find anything related to this error on the internet, I mean there are errors related to this code but none of the say anything about MAF

Any hints on this one?

Also, as I am owner of this amazing device I am happy to help people out if they need to scan their car and don't want to pay £50 to a garage to do this.
I am based in Northampton so if anybody needs it then please let me know via Private Message and we will think something out.

**Cavanmick** · 20-12-2014,12:10 PM

Best thing to do is drive it for a few days and then Re scan it and see are there any codes back in the system, some of the ones you found initially could be historic and are not affecting the car at all.

Mick

**WinDrop** · 20-12-2014,12:14 PM

Originally Posted by Cavanmick

Best thing to do is drive it for a few days and then Re scan it and see are there any codes back in the system, some of the ones you found initially could be historic and are not affecting the car at all.

Mick

Well, when I start the car it does clunk quite a bit.
It might be faulty glow plug as every time when I start the car (cold) I get a lot of white smoke (straight away after I start the car so not vapor)
Might be that one of the cylinders isn't starting up properly therefore gives that very loud and strong clunk...

Will try to scan again in the evening and see how many codes will come back.

Kind Regards,
Arturs.

**Cavanmick** · 20-12-2014,12:15 PM

If you are down a glow plug you will get a fault code for it and it will tell you which cylinder.

Mick

**WinDrop** · 20-12-2014,12:22 PM

Originally Posted by Cavanmick

If you are down a glow plug you will get a fault code for it and it will tell you which cylinder.

Mick

Great, thanks for letting me know

Any other common issues that could somehow cause this massive clunk sound and a lot of smoke first start from cold?

Anything specific I should look for within foxwell?

Also, not quite sure where to find this info, couldn't find anything within foxwell book but do you know how to transfer fault code data and live data recorded onto the device to a computer?

Kind Regards,
Arturs.

**Cavanmick** · 20-12-2014,12:24 PM

No I'm not sure of the workings of the fox well. I would be looking at the engine mounts if you are getting a big bang on startup, white smoke does sound like glow plugs alright, I presume it doesn't use any water.

Mick

**WinDrop** · 20-12-2014,06:26 PM

Originally Posted by Cavanmick

No I'm not sure of the workings of the fox well. I would be looking at the engine mounts if you are getting a big bang on startup, white smoke does sound like glow plugs alright, I presume it doesn't use any water.

Mick

Noup, no water usage at all.

**Quatrelle** · 20-12-2014,10:09 PM

If it starts ok when hot I'd guess it's definitely a glow plug.

I've just had the same problem on my old Laguna, firing on three on a cold start, clouds of smoke, and a slower idle (the more sophisticated electronics in the Passat might try to compensate for this), but ok starting when hot.

Tested them once I'd got them out, and one was shot, replaced them and all's now ok.

**WinDrop** · 20-12-2014,10:45 PM

Originally Posted by Quatrelle

If it starts ok when hot I'd guess it's definitely a glow plug.

I've just had the same problem on my old Laguna, firing on three on a cold start, clouds of smoke, and a slower idle (the more sophisticated electronics in the Passat might try to compensate for this), but ok starting when hot.

Tested them once I'd got them out, and one was shot, replaced them and all's now ok.

I thought it might be something like that as when I start mine with temp 50C+ it's absolutely fine, no smoke, no nothing...however it's quite hard to check glow plugs on my car

Will have to take it to the garage and ask them to do it which probably will cost me around 1.5 hours of labor.

Kind Regards,
Arturs.

**RichardSEL** · 21-12-2014,05:30 AM

I would've thought a glow plug/s fault would've bought up an indication, or a different fault code to the one you describe. Get a VCDS Autoscan. If there's a glow plug fault been reported, it'll show up written as such, when the fault occured, mileage then, and number of occurances. Here's a location map of VCDS users local to you that might do it for beer money. Certainly cheaper than the £50 you've been quoted. Dealer should charge ½ hour max. But there's been reports of a whole hour being charged reduced to zero if you have the work done there
https://maps.google.co.uk/maps/ms?ms...5cfcb6158e0447

If you're going to change glow plugs, change all of them. If a non-dealer garage, get them to use only glows from VW spares dept. as there's a lot of cheeepo Chinese fakes about in official looking boxes.