Fault code 01314

S

silversmith200

Member
Hi All,
I've been attempting to sort this out having read the wealth of info on the forum but to no avail.
It's my wife's car- a 1.4 petrol, manual SE (?) 2000 with about 95K.

Once warmed up and when you put your foot down I get ABS, EPC and the red warning circle with exclamation mark in the centre info display. This happens every time you drive it and under the same conditions. It drives and starts fine so this is a real pain more than anything.

Last week I read the codes and got code: 1761 plus 01314, so the diagnostics mechanic thought it was the lambda sensor and changed that (because he said there was no message being received by the ECU) -that didn't make any difference.
Today I decided to try and narrow things down a bit so gave it a service- changed oil, plugs, air filter and cleaned out the throttle body- which was pretty dirty. (changed MAP sensor last week also)

Took it for a test drive and exactly the same set of lights came on.
So did another scan but only got 01314- the message saying:

Control Module Part Number: 8Z0 907 379 B
01314- Engine Control Module
79-10- Please check fault codes- intermittent

My mechanic last week seemed to think that it is likely to be the ECU.
Can anyone advise? Under what conditions have others had ECU's replaced?
I don't want to keep throwing money at it.:mad::confused:

Regards,
Paul
 
Hi Paul, Exactly which device did you use to read the 01314 code?

Is it shareware or full version?

This could be linked to an ABS fault.

Cheers
Sarge
 
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Hi Sarge,
I used VCDS-lite but I know the mechanic used the full version. I imagine the 'lite' doesn't give anywhere near the same level of detail- so not sure how far that info I have will take me?
Th fault seems to fairly consistent. But wanted to get some more info from here to pass on.
As is always the way with modern cars there is never a straightforward answer needless to say this is driving my wife mad!!
Paul
 
silversmith200 said:
Hi Sarge,
I used VCDS-lite but I know the mechanic used the full version. I imagine the 'lite' doesn't give anywhere near the same level of detail- so not sure how far that info I have will take me?
Th fault seems to fairly consistent. But wanted to get some more info from here to pass on.
As is always the way with modern cars there is never a straightforward answer needless to say this is driving my wife mad!!
Paul
Click to expand...


I ask because .... have a look here: http://www.a2oc.net/forum/showthread.php?t=8462

I would recommend a 'full' scan with a 'full' version of VagCom (VCDS).
Let us have a look at the scan report and see. My experience tells me that sometimes this error shows up for other reasons, in other words the ECU puts it's hands up and says it's gonna be fussy (by showing this error) until whatever causing it is fixed, a bit of a red herring if you like.

Please do a full scan and also note the ABS scan details.

It's better to try to eliminate all other possible causes before heading for a new (and expensive) ECU, which could or could not be the issue (I am of the opinion it's not the ECU at this point)


Cheers
Sarge
 
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Thanks for the info Sarge, interesting.
It's going back in this week sometime so I'll mention this info and get them to check all wiring before any ECU replacement- it's a real pain you can't just try parts before shelling out cash.
Nice work on Shoby by the way. My Touareg has suffered a massive internal wiring failure (due to water leak) so what you've managed to do is amazing (I'm not fixing that though- would have no idea where to start!) It's being fixed but will have to be sold to pay the very big repair bill.
Oh well that's life.
Paul
 
silversmith200 said:
Hi All,
I've been attempting to sort this out having read the wealth of info on the forum but to no avail.
It's my wife's car- a 1.4 petrol, manual SE (?) 2000 with about 95K.

Once warmed up and when you put your foot down I get ABS, EPC and the red warning circle with exclamation mark in the centre info display. This happens every time you drive it and under the same conditions. It drives and starts fine so this is a real pain more than anything.

Last week I read the codes and got code: 1761 plus 01314, so the diagnostics mechanic thought it was the lambda sensor and changed that (because he said there was no message being received by the ECU) -that didn't make any difference.
Today I decided to try and narrow things down a bit so gave it a service- changed oil, plugs, air filter and cleaned out the throttle body- which was pretty dirty. (changed MAP sensor last week also)

Took it for a test drive and exactly the same set of lights came on.
So did another scan but only got 01314- the message saying:

Control Module Part Number: 8Z0 907 379 B
01314- Engine Control Module
79-10- Please check fault codes- intermittent

My mechanic last week seemed to think that it is likely to be the ECU.
Can anyone advise? Under what conditions have others had ECU's replaced?
I don't want to keep throwing money at it.:mad::confused:

Regards,
Paul
Click to expand...
Paul,
I find myself in a slightly similar postion 1.4SEPetrol 53reg 53k.
Wife drove car with eml on after starting. (It had been on recently and was rectified by changing the egr valve. Prior to the change, the garage had said run the car with light on until it can be brought in as it would be reliable).
She did 90 miles no problem to Sawbridgeworth, went christmas shopping the next day and 5miles into the journey it stopped. AA reset it and after repeated resettings got to a garage who diagd throttle body motor. I went to pick it up after paying £650 and it failed again( all dashboard lights on) before leaving the forecourt. Next day the garage gave up, took it to an Audi agent who thought it was thrust sensor, changed it, no different, they contacted Audi UK tech who thought it wanted a software update to widen the tolerances in the belief it was sensing a fault that is normal engine wear, no different. Today, Audi agent says it needs a new ECU £883inc vat! It is being suggested the throttle body motor failure could have caused the problem with the ECU. Am I alone, or just unlucky? With train/taxi fares, total cost £1600! Kias are beginning to look attractive!
 
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That sounds worse than mine. Wish I could offer some advice. I'm still waiting to get mine back in to the garage. It does generally runs OK- all be it with a bit less power. Have you considered sending the ECU to be repaired- there seem to be a few companies who will repair your own which causes less compatibility problems.
What I can't understand is how so many of us have the same problem but there is no solution.
The garage I took mine to said there was an A2 in the workshop next door with the same problem. So they're trying to get an Audi technician to look at them both. These problems seem to be so specialist and individual.

I'm starting to hate this car- I imagine you're already there!
 
silversmith200 said:
Have you considered sending the ECU to be repaired- there seem to be a few companies who will repair your own which causes less compatibility problems.
Click to expand...

A word of warning, In the past I have spoken with a couple of members from this forum AND some from other forums. These so called ECU repairers state they 'repaired' the ecu in all the cases (they would otherwise they wouldn't get paid), however in all the cases spoken off, the faults were still there! hence either ecu wasn't faulty or not repaired or fault was elsewhere!. When the repairers were re-contacted they said the ecu had been faulty (they would wouldn't they?) and they repaired it, and if they were to look at it again then further charges would apply!.


Cheers
Sarge
 
Paul,
Thanks for your reply. The car is 100 miles from home, and I dont have the inclination to investigate electronic problems, as I have no kit, let alone the time and knowledge. Having had a Polo for 10 yrs that only needed "consumables" Im disappointed to find an Audi has high cost parts that fail so early in its life. My wife is a gentle motorist- changed the tyres this year because they were perished not because they were worn out!
But its certainly changed my attitude towards Audi and premium makes, when Hyundai/Kia offer 5/7 year warranties, to me thats proof of quality, not rehtoric. At the end of the day we have the car to drive not holed up in the dealers workshop paying labour at£119/hr +VAT! good luck with your problem, it will be interested to know what the route of the problem is, I'll will follow your progress.
 
Update.
Gave up with my local mechanic and took it to Audi. They have diagnosed it needs a new throttle body at a cost of over £700. Not wanting to be in the same place as Stan I've order one for only £169 (I have a copy of EKTA so it was easy to check the part no.'s) Will need to be reset but that seems to be really easy- leave it for 3 mins with ignition on then turn off and done.

I'll replace it in the next couple of days and see what happens. At least I'm not out as much as if Audi did it- even if it doesn't work. (Audi said it still may not fix it!!!! what a great service!)
I'll let you know the result.
 
So today I changed the throttle body and it hasn't made a single difference. Still getting the same fault codes as before.

17691- Barometric/Manifold pressure signal
01314- Engine Control Module

Totally fed up now. May have to take it back to Audi. What else can I change/check?

PS
Have checked the pipes from throttle body and patched them where they were a bit scuffed with self amalgamating tape. The only other thing I can think is that there is a tiny hole I can't see and this is causing the problem. There are only two rubber pipes leading from the throttle and air box above it.
 
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17691 fault code relates to:

Fuel Injection Air Control Valve Circuit Electrical Malfunction. Doesnt seem to point to barometric / manifold pressure sender!!

01314 - Engine Control Module
01314 - Engine Control Module: No Communications
Possible Causes

* CAN-Databus Wiring/Connectors from/to Engine Control Module faulty
* Fault(s) stored in Engine Control Module
* Engine Control Module recently flashed or re-mapped

Possible Solutions

* Check CAN-Databus Wiring/Connectors from/to Engine Control Module
* Check Measuring Value Blocks (MVB)
o Usually Measuring Value Blocks (MVB) 125+ show the current Communication Status


01314 - Engine Control Module: Check DTC Memory
Possible Causes

* Fault(s) stored in Engine Control Module

Possible Solutions

* Check Engine Control Module for Fault Codes

Special Notes

* Engine Control Module stored a Code which influences other Control Modules Functionality.
* To clear this Fault Code you will need to correct the Problem in the Engine Control Module first.

Doesnt seem to point towards the ECU being faulty

John
 
Thanks for the info. I will check the simple things, after that the rest is beyond my knowledge.
Yes throttle body does need to be reset. The only thing I did to reset it was to leave ignition on for 3 mins. I take it this will have done it?
I think it wil have to be a trip to Audi, failing that we'll sell it as it is and take a loss.
The only other thing I was considering was the Charcoal canister- but I'm not sure what this does? and are they easy to replace? I'm going to have a look at it over the weekend. The problem is very consistent- always occuring when you accelerate and disappearing when you turn off and restart.

Don't know how useful this is but ran a readiness scan and it came up with:

EGR: failed or incomplete
Oxygen sensor heating: Passed
Air Con: passed
Secondary Air Injection: Passed
Evaporative Emmisions: Failed or incomplete
Catalyst Heating: Passed
Catalytic convertor: Failed or incomplete

Regards,
Paul
 
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All seems to point towards emmision control, which im sure involves the lambda and nox sensors.

When you do a full scan with full VCDS what do you get coming up?

John
 
I will have to get someone else to do a scan with full VCDS as I only have Lite, but I did have the Lambda at front of engine replaced a few weeks ago. Where is the nox sensor or is this the same thing? And is there another lambda sensor somewhere else?

When it went into Audi two weeks ago they did say there was a leak on the Throttle body and without changing that part they could 'not get any further', but since I've had all pipes off and checked them for holes -didn't find any- only a little bit of rubbing and have covered these with self amalgamating tape.
 
Yer. Get a full proper scan as this will bring up every fault code going, as the lite version doesnt show them all.

John
 
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