Hi, I have a 1998 A6 that won't go into gear after a serious water damage. The car has the following abnormalities:

1. The parking light on the shifter lights up only when the gear-lever is on neutral, never on “Park” position.
2. The tranny does not in engage when in drive “D”, nor does it engage in any other position for that matter.
3. I can only start it when in neutral position.

I have so far replaced the following parts:

1. TCU (the original was completed rusted)
2. Brake light switch
3. Shifter-lock solenoid
4. Replaced the Shifter Selector Circuit-board


I would appreciate if someone could look at my VAG log and give me some advice.

Thanks Much!


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Here is the VAG output:

Chassis Type: 4B - Audi A6 C5
Scan: 01 02 03 06 08 15 16 17 18 34 35 36 37 45 55 56 57 65 67 75
76 77

Mileage: 230240km/143064miles
------------------------------------------------------------------
Address 01: Engine Labels: 078-907-551-AHA.lbl
Part No: 4D0 907 551 AH
Component: 2.8L V6/5V MOTR AT D01
Coding: 06252
Shop #: WSC 02324
VCID: 6CC914DF36F9

7 Faults Found:
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-10 - - - Intermittent
16689 - Cylinder 5: Misfire Detected
P0305 - 35-10 - - - Intermittent
18014 - Rough Road/Engine Torque Signal from ABS: Electrical Malfunction
P1606 - 35-10 - - - Intermittent
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-10 - - - Intermittent
16689 - Cylinder 5: Misfire Detected
P0305 - 35-10 - - - Intermittent
18008 - Power Supply Terminal 15: Voltage too Low
P1600 - 35-10 - - - Intermittent
Readiness: 0010 1101

------------------------------------------------------------------
Address 02: Auto Trans Labels: 01V-927-156.lbl
Part No: 4B0 927 156 G
Component: AG5 01V 2.8l5V USA 8509
Coding: 00000
Shop #: WSC 00000
VCID: 2B4BD7C3F377

2 Faults Found:
01236 - Shift Selector Locking Solenoid (N110)
31-10 - Open or Short to Ground - Intermittent
00668 - Supply Voltage Terminal 30
31-00 - Open or Short to Ground

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Address 08: Auto HVAC Labels: 4B0-820-043-MY1.lbl
Part No: 4B0 820 043 G
Component: A6-Klimavollautomat D55
Coding: 00160
Shop #: WSC 02324
VCID: 1E2D0E17B0C5

2 Faults Found:
00792 - A/C Pressure Switch (F129)
31-10 - Open or Short to Ground - Intermittent
01273 - Fresh Air Blower (V2)
17-10 - Control Difference - Intermittent

-------------------------------------------------------------------
Address 17: Instruments Labels: 4B0-919-xxx-17.lbl
Part No: 4B0 919 930 B
Component: C5-KOMBIINSTR. VDO D11
Coding: 07262
Shop #: WSC 00000
VCID: 27432BF3EF9F

1 Fault Found:
00771 - Fuel Level Sensor (G)
30-00 - Open or Short to Plus

----------------------------------------------------------------
Address 36: Seat Mem. Drvr Labels: None
Part No: 4B0 959 760 B
Component: Sitzmemory R1 F 0101
Coding: 00001
Shop #: WSC 00000
VCID: 2C49D4DFF679

2 Faults Found:
00668 - Supply Voltage Terminal 30
07-10 - Signal too Low - Intermittent
00668 - Supply Voltage Terminal 30
06-10 - Signal too High - Intermittent

--------------------------------------------------------------

 

"Terminal 30 is the (+) terminal on the starter motor. It's what the (+) lead of the battery is connected to. When you disconnect the battery or it goes dead, the ECU senses that the voltage going to the starter is too low and logs the code." VgRt6

So you should be able to ignore/clear all the terminal 30 codes.

"Terminal 15 is "Switched Positive Voltage B+ from ignition / starter switch"" k harley

Again, could have been set from battery disconnect. But to be sure, I would remove all battery cables and clean them. Also disconnect your starter cables and clean them as well. Sounds like they could be really corroded from all the water damage you sustained.

Did you replace the TCM/U with the correct compatible year make? None of the codes listed should cause your car not to move.

 

Thanks

The TCM has the right part number (4B0 927 156G), so as far as I know, it came from the right car. The shifter selector-circuit-board was purchased from Shokan.com, but have to take their word that it came from an A6.

The thing is, I am getting no gear engagement from either D to "reverse". Could it be the selector-circuit-board is not working?


Also, according to Ross-tech, the error code 01236 - Shift Selector Locking Solenoid (N110): Open or Short to Ground indicates that Wiring/Connectors from/to Shift Selector Locking Solenoid needs to be checked and Repaired. Can a non-functioning Locking Solenoid cause the gears not to engage?

Also, the brake light on the shifter (the step-on-the-brake to shift out of parking light) lights up only on neutral position, but not when in "park" position. Does this indicate something?

 

i was wanting to know if you ever figured out what was wrong with the audi i am having the same issue on my 2000 audi a6

 

so i have a 2000 a4 quattro 2.8 30 valve with an auto/manual trans dont like it cuz its not working have to check on fluid levels but if anybody has had similar problems and fixed them please i need your input