Hello,
I have an Audi A1 Sport 1.4 TFSI Auto 2011 56K miles.
It’s experiencing a major issue with the gearbox at the moment and I’m unsure of the next steps. I understand that these DSG gearboxes / mechatronics are a nightmare and very expensive to fix. The current symptoms are I am unable to start the car in Park – it actually is in gear so when the vehicle tries to start it stalls. I have put the vehicle on axle stands (so the driving wheels are free) and it still stalls when in park. However, when putting the vehicle in Neutral, I can press the brake, turn the ignition, release the brake and the engine starts. The wheels are turning as it’s still in gear. When I put the vehicle into D and press the accelerator, it starts in D2 and skips D3 & D5 (seems to be the odd gears). Then I get the gear flashing icon in the dash and an A symbol with a strike through it. Then I can actually select Neutral. Once in Neutral I can select reverse and that gear works as expected and being in drive enables me to drive the car forward in D2.
I believe I could try;

  1. Drain oil from DSG and replace with 1.7 litres of G002/004
  2. Remove Mechatronics (either send away to be refurbished (£450) or home refurbish via kit off eBay (£120 & time)– unsure how difficult this would be though, may be out of my depth.
  3. Refit Mechatronics and try again.
  4. If still fails, then I believe it will be a complete new gearbox / rebuild?

Before I go ahead with the above steps, is there anything else that I could try before going head first with some pretty major work!? Any help would be much appreciated;
I have had the following codes on the auto trans;
Unable to Engage Gear 1 -or- Synchronization Gear 1 aborted
Unable to Engage Gear 3 -or- Synchronization Gear 3 aborted
P189C/006300 - Function Restriction Due To Insufficient Pressure Build-up. (it seemed that topping up the oil fixed this)
I had run some diagnostics on it and get the following codes;
Address 01: Engine (J623-CAXA) Labels: 03C-906-016-CAX2.clb
Part No SW: 03C 906 016 BH HW: 03C 906 016 BG
Component: 1.4l R4/4V TS H08 8927

3 Faults Found:
5456 - Starter Will Not Turn
P3054 00 [096] - Jammed or Electrical Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 4
Mileage: 88743 km
Date: 2020.02.29
Time: 00:20:26

7158 - Please Check DTC Memory in CAN Gateway (J533)
U1008 00 [039] - -
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 88746 km

7021 - MIL Request Signal Active (Check TCM for errors too!)
P1624 00 [104] - -
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 1
Mileage: 88743 km
Date: 2020.02.29
Time: 00:14:44
Readiness: 1110 0101
Address 02: Auto Trans Labels: 0AM-300-04x.lbl

1 Fault Found:
001867 - Unable to Engage Gear 3 -or- Synchronization Gear 3 aborted
P074B - 000 - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 0
Fault Frequency: 2
Reset counter: 40
Mileage: 88746 km
Time Indication: 0
Date: 2020.02.29
Time: 02:45:16
Address 08: Auto HVAC (J255) Labels: None

5 Faults Found:
0040 - Function Restriction due to Faults in Other Modules
U1113 00 [008] - -
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 2
Reset counter: 40
Mileage: 88738 km
Date: 2020.02.28
Time: 03:24:30

0051 - High Pressure Sensor
B10AE 84 [009] - Signal below allowable range
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 86
Reset counter: 2
Mileage: 88738 km
Date: 2020.02.28
Time: 01:37:51

0056 - Regulation Valve for A/C Compressor
B11AE 15 [009] - Open or Short to Plus
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 2
Mileage: 88747 km
Date: 2020.03.01
Time: 00:01:29

0060 - Engine Off Timer Performance
P150A 00 [009] - -
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 7
Fault Frequency: 3
Reset counter: 2
Mileage: 88739 km
Date: 2020.02.28
Time: 00:04:37

0069 - Function Restricted due to Insufficient Voltage
U1400 00 [008] - -
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 6
Fault Frequency: 2
Reset counter: 40
Mileage: 88738 km
Date: 2020.02.28
Time: 02:48:58