1.6 FSI: Single fault code 16523 that recurs

[Andrew]

My apologies - I'll see if I can find G62 information. I had assumed that 108-110 temperature *was* the actual engine temp. No idea who might be a CDIS guru other than @timmus (though I know he's a diesel owner, so likely hasn't had the opportunity/inclination to go down this rabbit hole).

No need to ask Tom, Group 001, Block 2 is the coolant temperature at the engine outlet as reported by G62, so your assumption was basically correct. Your coolant temperature looks perfectly FSI normal, especially the 108.0℃ looks spot on which I assume it is some kind of average for the period of the graph.

Andy

 

[Andrew]

This is (from memory) the code that I've got. Certainly sounds like the same thing, no detectable symptoms from the driver's seat, you clear it and it's back within a couple of hundred miles. ProBoost sadly isn't a solution for this one as my FSI is running it. I've had the pre-cat sensor replaced at WOM, it looks like replacement of the expensive post-cat/NOX sensor is the only way forward.

I would think seriously about replacing with the alternate for whichever VW model it was that is known to work. The problem is the cable is too short and needs extending but surely a good viable method can be found.

Andy

 

[jaffa_jim]

I would think seriously about replacing with the alternate for whichever VW model it was that is known to work. The problem is the cable is too short and needs extending but surely a good viable method can be found.

Andy

Okay, so which post-cat NOX sensor would be a likely candidate?

 

[PlasticMac]

Okay, so which post-cat NOX sensor would be a likely candidate?

I read a post on here, quite a while ago, and I think it was from the Polo. I've searched, but so far, not found it.
Mac.

 

[Evripidis]

If they've done more than 100k miles replace them.

 

[PlasticMac]

If they've done more than 100k miles replace them.

The problem is finding one, and at a reasonable, (?) price.
The alternative item was quite a bit less than the FSI one, still NGK and new. Just can't find the original post.
Mac.

 

[jaffa_jim]

The problem is finding one, and at a reasonable, (?) price.
The alternative item was quite a bit less than the FSI one, still NGK and new. Just can't find the original post.
Mac.

Nox Sensor replacement instructions 1.6FSI

I also have this fault come up on the mrs Fsi but no engine light and seems to drive as normal. Whats the updated price on these sensors? Anyone?

www.a2oc.net

I've found the part number on AliExpress, which may or may not be controversial.

 

[Evripidis]

The problem is finding one, and at a reasonable, (?) price.
The alternative item was quite a bit less than the FSI one, still NGK and new. Just can't find the original post.
Mac.

@jaffa_jim got me to it. I remember typing it on here somewhere.