Yes im a bloody plonker

So when the mayor decided the latest way to squeeze money out of us motorists would be with a ULEZ i thought nope, cant afford £12.50 a day so i parked up the car and applied for the scrappage. The wife, kids and I can just settle for taking the bus when needed.

That was 3 and a half years ago. I got stiffed on the scrappage so car has sat since then uncovered. Now we all hate walking/taking the bus (now with a new baby and pushchair!) and we really miss our beautiful A6.

Car was working fine when originally parked up, but its been left to the elements. I know the partition at the back of the engine/bottom of windscreen has been half full with water due to the drain hole beng blocked.

So i put some fresh diesel with injector cleaner in the tank, got a new battery identicle to the previous battery. Car started fine but sounds like an old tractor, something is clearly up. Also engine sounds a bit like its being tapped with a hammer.
It starts with a little push of the throttle then idles on its own, sounds awful at idle but with a little revs sounds much better. Wont rev higher than 4k. Tried to drive it and car wont rev and has no power. Didnt wanna go in reverse or steer but after a but of use those things improved. The glow plug light is flashing and the traction control (car with squiggly lines underneath) light is also on.

Codes being pulled with a scanner are

05715 - Active/static Read DTC memory of ABS cm.
04160 - Active/static Injector group A supply voltage, electrical malfunction in circuit.

01826 - Steering angle sensor G85 voltage supply terminal 30 tbd.

00003 - Active/static Control module, no or incorrect basic setting adaptation.


It was showing this code (04120) earlier and i put alot of work into researching it and was gonna start taking out the inlet manifolds with an aim to fit refurbished ones or get the kit to fit new flaps etc, but then today i scanned car again a few times and its not showing the 04120 code anymore.


So guys what do you reckon, an electrical problem or an injector problem? Yeah i was stupid not to cover the car, i had a lot of family issues, new baby and my mum passed away so the car went on the back burner.

Now i really wanna take my 8 year old to car shows and santa pod and days out to the seaside etc so i need this car on the road sharpish…please can you help? Car is a A6 C6 3.0 tdi ASB engine 2008.

First precaution, cover one’s end, i.e. birth control, then cover the car

Haha yeah im with you on that…on both counts. Getting old so couldnt put it off any longer!

Anyway please what do you reckon the issue could be with the car? Can do mechanics no probs but electrics hmmm..not my strong point so i need to find what im in for.

To help, I need a full car scan of all the cars controllers using VCDS, saved as a .txt file and including the VIN. Then with the engine running, turn the steering from lock to lock three times. Next clear all the fault codes and then do another full scan and save. Finally, post both full scans.

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Originally Posted by Crasher

To help, I need a full car scan of all the cars controllers using VCDS, saved as a .txt file and including the VIN. Then with the engine running, turn the steering from lock to lock three times. Next clear all the fault codes and then do another full scan and save. Finally, post both full scans.

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Thanks Crash…. Unfortunately i dont have vcds, just an autel scanner that gave the results i posted earler. Ill do the steering thing as you recommended and get back after doing another scan. Scariest fault code is 04160 but theres something else with the ESP.With these A6s where us the most common place for there to be water damage and what should i look out for?Thanks for your help, it looks like the A6 portion of the forum has a lot less viewers compared to when i last got help 6 years ago (different log in details…firgot min)… and whole load more ads haha.

Without a full VCDS scan I am stuck trying to help.

Just a thought, as you have had it sat for a few years you should inspect the wiring looms in the engine bay in case of rodent damage.

Quote:

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Originally Posted by Crasher

Without a full VCDS scan I am stuck trying to help.

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From memory your a mechanic by trade so saying you know nothing without a vcds scan despite knowing the symptoms seems a bit unlikely to me or at least I hope it's not the case.
I appreciate your time in replying nonetheless and thank you.

Quote:

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Originally Posted by dan2485

Just a thought, as you have had it sat for a few years you should inspect the wiring looms in the engine bay in case of rodent damage.

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Thanks Dan, it's what I'm currently doing or muddling my way through it. The injectors on bank 2 are all registering the same resistance which is odd as I'd always thought I had a dodgy injector that finally gave out. Perhaps one is still gone though, I was prepared to do the long screwdriver test of listening to the spring tapping in the injector but unfortunately the car wouldn't start now.
The wiring seems to be ok and I've just had a look at the ecu which again looks OK. After watching a few tutorials about checking for continuity in wiring I'm going to soon have a punt at that... Though there is alot if wiring and I'm colourblind haha so wish me luck.
Gotta find a free place for wiring diagram.

Rodents, in my south london car park there's no rats or mice just spiders etc.

Why free when everything is €7 on erWin?