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Steering angle sensor (G85) 00778

S3_NDJ Mar 23, 2015

  1. S3_NDJ

    S3_NDJ Registered User

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    Hi all

    I have today replaced my tail lights for facelift ones ... looks so much better :)
    Whilst i was at it today i replaced my indicator as my cruise control switxh was not working this meant i had to remove the steering wheel....
    Everything went well cruise control works and indicators and main beem all good etc etc

    However when i removed the wheel the steering angle sensor did move i have done my best to centre align the wheel and sensor again but this fault comes up 00778 witch i have heard if u test drive the car and do a 360 lock in each direction and then drive above 20mph in a straight line for a certain amount of time the sensor can re initialize itself i have just done a 30 mile trip and it still is there ....
    Any ideas how long it takes for this to happen ???
    Cheers
     
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  3. S3_NDJ

    S3_NDJ Registered User

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  4. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

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    Is the wheel off centre?

    <tuffty/>
     
  5. S3_NDJ

    S3_NDJ Registered User

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    Yes it is however before i changed anything today it was slightly out...
    But i put it back as close as to what it was originally earlier and it still came up with the same fault
    I then since have centred it and the issue is still there...
    When i took the car for a 30 mile trip i didnt have the airbag on (It was fully disconnected) as it saved taking it on and off and fiddling with the battery every half hour.
    I am reconnecting the air bag in a mo and then going for another spin to see if it re initilizes itself
    After that im out of ideas tbh
     
  6. mattyboy199

    mattyboy199 Registered User

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    The steering angle sensor shouldn't be messed with if you move it on removal of the wheel its extremely difficult to get back in the correct position. A steering angle sensor will come preset in a default position once installed there's a pin that should be removed its probably damaged. I'd suggest buying a new one but their not cheap, i sourced mine from Australia. The ESP light will remain on until its sorted.
     
  7. S3_NDJ

    S3_NDJ Registered User

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    Cheers m8 but i have had it plugged in on vcds and it turns out it was out by 360 degrees .... therefore just need to refit it bavk to the original position ill fo this today /tomo thanks tho
    Cant believe u had to source urs from aus thats a nigtmare
     
  8. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

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    Its not difficult to get into position, there is technically only one position it can be in as the airbag plug and locating pins only locate in the wheel in one place.... the problem you get is if you have rotated the sensor at all...

    You have already said your wheel is not on straight... for the whole ESP/ABS system to work as expected it needs to be straight... the fact it was ok prior to this is no indication this wasn't on the brink of happening tbh... the refitting could have taken it past its tolerance zone and has now thrown a fault..

    I would in the first instance get your steering aligned and go from there.. the procedure you mentioned in your first post sounds similar to the active steering reset procedure rather than the steering angle fault... I seem to recall a friend of mine having this on his A4 and it took a good 200 miles before the light went out

    More info on your fault code here
    http://wiki.ross-tech.com/wiki/index.php/00778

    <tuffty/>
     
  9. S3_NDJ

    S3_NDJ Registered User

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    Thanks tuffty for ur input as this will be handy if i sort it today/tomo think im gunna have to get vcds lite as its definatly worth while... there steering wheel is now straight but the steeribg angle sensor is aparently reading either + or- 360 degrees so just got to plug it in in the next day or so then rotate the sensor untils its back 0 then refit it all only pain is i have to drive 20 mile to the nearest vcds at my garage but they are pretty good tbh im happy with the work they have done so far they also have someone silver S3 8L in running at 415 bhp (unsure on other figurs) but the owner is trying for 450 bhp ... where does it end lol ???
     
  10. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

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    It doesn't :)

    <tuffty/>
     
    superkarl and S3_NDJ like this.
  11. IPG

    IPG Registered User

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    @S3_NDJ

    how did you go with this? i've just done a monthly scan on mine and come up with

    1 Fault Found:
    00778 - Steering Angle Sensor (G85)
    04-00 - Mechanical Malfunction

    previous to this i had

    1 Fault Found:
    00778 - Steering Angle Sensor (G85)
    04-10 - Mechanical Malfunction - Intermittent

    When i first got the car there was a permanent ESP light on but i did the calibration and that got rid of it. However i've noticed the steering wheel is slightly off centre when driving straight. Time to change the sensor???
     
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  13. S3_NDJ

    S3_NDJ Registered User

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    Hey ian bare with me ill PM u
     
    IPG likes this.
  14. IPG

    IPG Registered User

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    right so just to update things. i've managed to get a new clock spring from an A3

    http://www.partsbase.org/parts/aud-1j0959653/

    (i'm hoping there's only one version)

    what i'm going to try and do after S3_NDJ's PM is check
    1- my steering wheel is lined up to the notch on the splined bit behind the airbag (at a stop the wheel lines up, when driving in a straight line it's off to the right maybe 10-15˚)
    2- double check my old clock spring is in the correct position using VCDS
    3- if that's all good then re-do the basic setting...

    I reckon something's been put back on a little bit wrong somewhere along the lines...
     
  15. mattyboy199

    mattyboy199 Registered User

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    Quattro will be a different part to a FWD A3, A3/S3 that are 4WD should be the same
     
  16. westcoast a3

    westcoast a3 Registered User

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    I used a clock Spring from a golf for my tqs just has to be from one with esp :)
     
  17. IPG

    IPG Registered User

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    Oh dammit. Might have to go back and grab one from a bora with the ASR button...
     
  18. poaris060

    poaris060 New Member

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    Hi Im new here but not new to Audi.

    I have a 2009 Q5 3.2

    after someone kindly hit the car in a carpark the rear bumper had to be replaced and the lights and parking sensors were obviously disconnected. On collecting the car it threw up warning lights for ESP and tpms

    they tried to have it recalibrated at an independent specialist but did not work and I took the car to Audi who now say the steering angle sensor is faulty. A huge coincidence in my mind as there was no indication of a problem prior to the work on the bumper. Its nearly $2000!

    It brings to mind that about 4 years ago Audi repaired damage to the leather steering wheel after it had been in for new front struts. I assume the steering wheel would have been taken off to do this. On getting the car back after the leather repair the steering wheel was pointing left about 10 degrees when travelling in a straight line

    This was reported to Audi several times and each time they said it was the road camber....but it never did that before the leather repair. I have been wondering if the steering wheel was fitted off centre?

    could it be that now we have had to re-calibrate ESP and TPMS an off centre mounted steering wheel could cause a fault to be shown? Audi have checked the alignment and everything is spot on. Just when you drive it the steering wheel is pointing left

    Interesting when you turn the car off and on again the warning lights are not on and only come on when the wheel is turned left and then stay on

    would be keen to get an opinion as the service guy at Audi is not very helpful, and there is only one dealer here in Perth
     

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