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Thread: Shifter Locked Out - Multiple Codes/Symptoms All At Once

  1. #1
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    Shifter Locked Out - Multiple Codes/Symptoms All At Once

    Driving to scoop up dinner I had these new symptoms:
    o PRNDS all highlighted
    o Oil Sensor Warning
    o AC/Climatronic no power

    Car seemed to drive normally (not in limp mode for sure), shifting as expected.

    Before I shut the car off trying to move the shifter to Park it locked itself in Neutral and wouldn't move. I was able to shut the car off, put key in the ACC position (the click before 'On') and move it back to park.

    New Codes from scans (all new from this symptom):

    ---------------------------------
    Address 01: Engine Labels: 077-907-558-BCY.lbl
    Part No: 4D1 907 558
    Component: 4.2l V8/5VT G 0002
    Coding: 0006752
    Shop #: WSC 87119 806 641192
    VCID: 6B96DCAB4B21F7D306-5160

    2 Faults Found:
    18043 - Powertrain Data Bus
    P1635 - 008 - Missing Message from A/C Controller
    18062 - Please check DTC Memory of Instrument Cluster
    P1654 - 004 -
    Readiness: 0000 0000

    -----------------------------
    Address 02: Auto Trans Labels: 01L-927-156.lbl
    Part No: 4B0 927 156 FL
    Component: AG5 01L 4.2l5VT USA 0305
    Coding: 0000002
    Shop #: WSC 00000 785 00200
    VCID: 76A0FDDF00633A3BE9-5160

    2 Faults Found:
    18169 - Shift Lock Solenoid (N110)
    P1761 - 003 - Short to Ground
    18161 - Tiptronic Switch (F189)
    P1753 - 003 - Implausible Signal

    ------------------------------
    Address 17: Instruments Labels: 4B0-920-xxx-17.lbl
    Part No: 4B0 920 983 D
    Component: KOMBI+WEGFAHRS. VDO D13
    Coding: 03284
    Shop #: WSC 62799
    VCID: 291AE6A3D15D25C3B4-5160
    WUAPV64B53N904614 AUZ7Z0C2409258

    2 Faults Found:
    01311 - Information Data Bus
    80-00 - Single-Wire Operation
    00562 - Sensor for Oil Level/Temperature (G266)
    30-00 - Open or Short to Plus

    I checked all fuses, found a 15A in position 33 that seemed in dubious shape (top by numbers was distorted from internal changes) so replaced that. Also found one of the smaller 10A fuses in position 5 that was visibly broken as well, so also replaced that. Locations based on this chart:

    https://fusesdiagram.com/audi/fuses-...udi-a6-c5.html

    Tested again with new fuses, no change.
    Cleared codes, no change.

    It feels that based on the large count of things that all happened at the same time I might be hitting a single point of failure but couldn't track down any good info on what (if anything) interconnects those items that are showing shorts (Climatronic, Transmission brake switch N110, Oil Sensor).

    Any ideas? Thanks in advance

    -jake
    Last edited by JakeLight; May 13th, 2021 at 07:08.

  2. #2
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    More codes (scan from 10 days ago 5/2) that I cleared to see if they came back:



    Address 01: Engine Labels: 077-907-558-BCY.lbl
    Part No SW: 4D1 907 558
    Component: 4.2l V8/5VT G 0002
    Coding: 0006752
    Shop #: WSC 87119 806 641192
    VCID: EB99D4AFCF4161978920A3-5160


    3 Faults Found:
    17863 - Exhaust Gas Temp Sensor 1 (G235)
    P1455 - 008 - Implausible Signal - Intermittent


    17867 - Exhaust Gas Temp Sensor 2 (G236)
    P1459 - 008 - Implausible Signal - Intermittent


    18010 - Power Supply Terminal 30
    P1602 - 002 - Voltage too Low - Intermittent


    Address 06: Seat Mem. Pass Labels: None
    Part No SW: 4B0 959 760 C
    Component: Sitzmemory R1 BF 0103
    Coding: 00003
    Shop #: WSC 00000 000
    VCID: 2D1D9AB7B1D53CA757D44D-4AE0


    1 Fault Found:
    00668 - Supply Voltage Terminal 30
    07-10 - Signal too Low - Intermittent

    --
    Address 08: Auto HVAC Labels: 4B0-820-043-MY2.lbl
    Part No SW: 4B0 820 043 AR
    Component: A6-Klimavollautomat 0208
    Coding: 00000
    Shop #: WSC 40233 000
    VCID: 6A9751AB40BBEB9F72362E-2578


    1 Fault Found:
    01592 - Air Quality Sensor (G238)
    57-00 - Electric Circuit Failure


    --
    Address 35: Centr. Locks Labels: 4B0-962-258.lbl
    Part No SW: 4B0 962 258 M
    Component: Central Lock/Alarm D38
    Coding: 15885
    Shop #: WSC 00000 000
    VCID: 33298CCF57F16A5701108B-4F0C


    5 Faults Found:
    00668 - Supply Voltage Terminal 30
    07-00 - Signal too Low
    (other 4 faults are cant lock each door intermittent)


    Address 36: Seat Mem. Drvr Labels: None
    Part No SW: 4B0 959 760 B
    Component: Sitzmemory R1 F 0204
    Coding: 00001
    Shop #: WSC 00000 000
    VCID: 2C1B97B38ACF35AF40AA58-4AE0


    1 Fault Found:
    00668 - Supply Voltage Terminal 30
    07-10 - Signal too Low - Intermittent

    The in-cabin filter was recently replaced, wonder if something around that got nudged that wasn't supposed to be...


  3. #3
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    There are a bunch of grounds on the firewall, with some being near by the cabin filter. Sounds like a bad ground or loose connection somewhere.

    One set of ground points is on the firewall behind the drivers side of the engine. Otherwise pull the rain tray off and look for any corrosion and push in each connector.

  4. #4
    Registered User hahnmgh63's Avatar
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    Any work done on the car recently? How old is the battery?
    2003 White RS6 2013 Midnight Blue S5
    2013 Daytona RS5 2x944 Turbo's 1974 911 w/'91 3.6ltr motor
    Roy, WA

  5. #5
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    New battery was put in early March (self-inflicted damage caused by leaving dash-cam plugged in for many days)

    Full suspension replacement (Koni setup) was done recently (finished early April), all control arms (12), lower engine cover added (was not present when I got it), Hotchkis swaybar added, engine air filters, cabin air filter, oil change + oil filter

    The G238 code was not present before the cabin filter was replaced, so definitely going to look into that area

    Also fuse 5 pops every time the key provides power

  6. #6
    Registered User hahnmgh63's Avatar
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    Items on Fuse 5:
    Oil level/oil temperature sender
    Compressor regulating valve, air conditioning system
    High pressure sender
    Tiptronic switch
    Tyre pressure monitor control unit
    Bulb monitoring device
    Mobile phone operating electronics control unit
    Control and display unit for air conditioner/Climatronic
    Air quality sensor
    Navigation system with CD drive control unit
    Self-levelling suspension control unit
    Operating unit to control suspension height
    Telephone/telematics control unit
    Control unit for voice control
    Parking aid control unit
    Rear roller blind switch

    Obviously if you don't have the roller blind it isn't on the circuit as well as N. American cars never had TPMS or self-leveling suspension.
    2003 White RS6 2013 Midnight Blue S5
    2013 Daytona RS5 2x944 Turbo's 1974 911 w/'91 3.6ltr motor
    Roy, WA

  7. #7
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    Going to open this suspiciously bent taped up bit tomorrow and see what's what, I wonder if this is where power for the K40 was spliced in. This is right next to the purge valve.



    -jake
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  8. #8
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    Is there an RS6 specific wiring diagram out there - the AllData site doesn't have one specific to this car. Have unplugged everything we think is on that fuse but it's still popping when turning the key.

    Also fwiw found a shifter lockout workaround per this youtube video that works, so can at least drive the car now (basically remove trim surround at shifter, then straight down at the Front-Left of the shifter there is a white plastic bit that you can push forward to unlock the shifter lock):
    https://www.youtube.com/watch?v=j0r7oKRpBv4

  9. #9
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    Just thought of another thing that is maybe related to the fuse blowing, back when I first got the RS6 in mid-2019 I gave a few people rides and when someone sat in the rear passenger side I would occasionally get an airbag light. Since I see 'SRS Warning Lamp' on that Fuse 5 I'm wondering if this might somehow tie in. I did work sitting on that seat in the down position to replace the battery a couple of months back. Car is at an indy shop being looked over, but still unsolved as of this moment...

    Here's the code when I pulled it back on 8/9/2019


    Address 15: Airbags Labels: 4B0-959-655-AI84.lbl
    Part No: 4B0 959 655 Q
    Component: Airbag 8.4EP 2001
    Coding: 0000607
    Shop #: WSC 00000 785 00200
    VCID: 3E3025FF68D3B2BFAB-5184

    1 Fault Found:
    01212 - Belt Tensioner Igniter; Rear Passenger Side (N197)
    001 - Upper Limit Exceeded - Intermittent

  10. #10
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    Interesting about the airbag light when sitting in back...I had a Merc E320 a while back and it had a notorious intermittent battery drain issue...turns out the wire for the driver's door lower interior light ran down underneath of the dead pedal...basically, pressure on the dead pedal would only occasionally cause it to ground out through a chafed wire and cause only the lower door light to stay on that you couldn't see because it was up next to the seat with the door closed. Long story short, hidden wires under carpeting and seats can be an issue!

  11. #11
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    Just got word the shop located the issue, it was tied to the wiring related to the air quality sensor after all, something inadvertently got pinched on re-assembly it sounds like. Picking up later today

    -j

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