Technical > Electrical

Unknown fault code, are any of these measurements well off?

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NealPeal:
Hello!
I've been battling to get the warning light to stay off... 30 seconds after starting it flashes the ! light, I hope I'm right thinking this is a management error... (If it's oil-pressure I'll kick myself
I'm getting "unKnown error"

Control Module Part Number: 030 906 022 c  Component and/or Version: DIGIFANT0864
1 Fault Found: 07683 - Unknown Error Code  08-10 -  Control Limit Surpassed - Intermittent

Anyone point me to anything from this...
A new o2 sensor didn't change much, the exhaust is sooty and jumps a bit until it goes limp...

any help appreciated, can I ask if any of these measurements look sus?


Bestest's
Neal :-)

steveo3002:
-13 dont sound right

NealPeal:
Paul did say that was normal to be weird, that's why I'd like a few "what yours' say" screenshots to compare.. When I've stuck a resistor across the sensor plug (about 1k) and made it measure 10' it still goes limp after 20 seconds ish…
 
I'm intrigued by the 1.6v, I've not managed to find any way of changing it. It'd be good if that's the CO pot and it is open-circiut I can look for that

The 0.49v o2 sensor is easy to trace, grounding the pin sends the reading low.

Can I check I am right, if the red light flashes that's an ecu fault..?

I was checking the earths a bit and taking my dvm anywhere near the engine makes it go mad flashing readings, even with both probes touching at the same point, esd picking up from somewhere... I had it between the battery and engine and when I saw a voltage I thought !Bingo!, but a jump-lead between those points still had the meter going bananas, until I stuck it behind the bulkhead

Maybe unrelated but big electro-magnetic spikes might be throwing the ECU, what d'you recon?
NEAL :-)

steveo3002:
what does you tps show ..engine off pedal to the floor?

hayesey:
what do you mean by warning light?  There's no ecu fault light in a G40.

Getting a crazy reading from the inlet air temp sensor is normal.  The software just doesn't seem to decode it properly.  I usually see values of -20.

I don't know what that fault code is, not sure if VWTOOL.EXE would tell you more, that's what I always used.  Finding a list of G40 Digifant fault codes seems to be impossible.  There's a few lists for G60 Digifant I came across Google searching but none list that code.  E.G.

http://www.a2resource.com/electrical/codes/digifant1g60.html

The only thing I found is someone on a german forum asking the same question but no one answers it:

https://www.polotreff.de/forum/t/233938



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