VW 0AM / 0CW / DQ200 Common Fault Codes and Repair Measures

Please note that this guide is provided as a general reference and in no way constitutes an official recommendation. We constantly update this list to cover more Volkswagen & Audi error codes.

Some error codes may appear multiple times in this table.

Common issues when disassembling and reassembling the transmission:

The Shift Forks and their Push Robs (Actuators) must be in “Neutral” positions.
Push Robs (Actuators) has two versions with different lengths: 1st generation (part number 0AM325091E, Mechatronic part number 0AM325025D) is 101mm, 2nd generation (part number 0AM325091F) is 99mm. They are not interchangeable. If you have the wrong version, remove the heads from the rob and swap those two heads to your original rob.
Mechatronic and the clutch must be separated using T10407 during the process.
Gearbox oil: 1.7L (G 052 171); hydraulic oil (valve body oil): 1.1L (G 004 000).
For new TCU, change its code to 20 after installation.
- Torque Specs: To tighten the accumulator, use 20NM torque; TCU bolts to the valve body: 7NM; Mechatronic to the gearbox: 10NM.
After clutch replacement, “dual clutch torque too high” error code appears: update TCU software and perform basic settings.
Battery voltage lower than 9.5V will fail basic settings and may cause hydraulic related error codes.
- For basic mechatronic removal / installation guide, please refer to the bottom of the webpage.

Please use the browser search to locate your error codes (Ctrl + f or ⌘ + f on most platforms)

Error Code	Symptoms	Correction
P189C	Vehicle not able to move	Replace valve body (in some cases, you can change the valve plate alone)
P17BF	Breathing hole leak	Replace valve body
P1895	Vehicle not able to move	Replace valve body
P176F	Hard shifting	Replace valve body
P175E	Intermittent error (reappear in a while after clearing it)	Replace valve body
P0841	Check Engine Light	Replace valve body (see next P0841 for comparison)
P173D	No 2, 4 ,6, R gears	Replace valve body
P072C	No 1, 3, 5, 7 gears	Replace mechatronic and update TCU software if applicable
P072D	No 2, 4 ,6, R gears	Replace valve body
P072A	No 1, 3, 5, 7 gears	Replace valve body
P178B	Vehicle not able to move	Replace TCU
P174D	Vehicle not able to move	Replace TCU
P073A	Intermittent error, hard shifting	Replace TCU
P0841	Intermittent no 1, 3, 5, 7 gears (will reappear in a while after clearing it)	Replace TCU (see previous P0841 for comparison)
P1732	Vehicle not able to move	Replace TCU
P173A	Vehicle not able to move	Replace TCU
P173B	Vehicle not able to move	Replace TCU
P173C	Vehicle not able to move	Replace TCU
P173D	Vehicle not able to move	Replace TCU
P0562	Unable to turn on the vehicle	Replace TCU and fuse
P0928	Intermittent issue (vehicle not able to move when the issue happens)	Replace TCU
P074A	No 2, 4 ,6, R gears	Replace TCU
P1727	Intermittent issue, gear slippery	Replace TCU
P2711	Gear slippery	Replace TCU
P1822	Operates normally, but unable to clear the error code	Perform basic settings
P1850	Operates normally, but unable to clear the error code	Perform basic settings
P1851	Operates normally, but unable to clear the error code	Perform basic settings
P1853	Operates normally, but unable to clear the error code	Perform basic settings
P1882	Operates normally, but unable to clear the error code	Perform basic settings
P1741	Hard shifting	Replace clutch
P177D	Hard shifting	Replace clutch
P073B	No 2, 4 ,6, R gears	Inspect and replace shift fork if needed, update TCU software; If the issue persists, replace mechatronic
P1604		Replace TCU
P0840		Replace TCU
P1740		Replace TCU
P17C7		Replace TCU
P1735		Replace TCU
P073A		Replace TCU
P137A		Replace TCU
P17E100		Follow this link
P06600 (P0660/P0666)	Internal Temperature sensor issue. Vehicle not able to move	Replace TCU
P177900 (P1779)	Input shaft 1 speed too high. Vehicle not able to move	Replace TCU
P177A00/P174C00 (P177A/P174C)	Input shaft 2 speed too high. Vehicle not able to move	Replace TCU
A072600 (A0726)	Unreliable readings from TCU speed sensor. Vehicle not able to move	Replace TCU
P172F00 (P172F)	Distance sensor 1 issue. Vehicle not able to move	Replace TCU
P1731000/P173000 (P1731/P1730)	Distance sensor 2 issue . Vehicle not able to move	Replace TCU
P1732000 (P1732)	Distance sensor 3 issue. Vehicle not able to move	Replace TCU
P173500 (P1735)	Clutch Distance sensor 1 issue. Vehicle not able to move	Replace TCU
P173600 (P1736)	Clutch Distance sensor 2 issue. Vehicle not able to move	Replace TCU
P177F00 (P177F)	Insufficient voltage for hydraulic pump motor. Vehicle not able to move	Replace TCU
P174A00 (P174A)	Partial transmission 1 Valve 3 error. Vehicle not able to move	Replace TCU
P173E00 (P173E)	Partial transmission 1 Valve 1 error.	Replace TCU
P173F00 (P173F)	Partial transmission 1 Valve 2 error.	Replace TCU
P174B00 (P174B)	Partial transmission 1 Valve 4 error.	Replace TCU
P174E00 (P174E)	Partial transmission 2 Valve 3 error.	Replace TCU
P071500 (P0715)	Transmission Input speed sensor 1	Replace TCU
P276500 (P2765)	Transmission Input speed sensor 2	Replace TCU
05998 P176E 001	Clutch 2 opens unintentionally	Update TCU software, if the issue persists, replace mechatronic
01835 P072B 000	Gear R not selectable	Update TCU software, if the issue persists, replace mechatronic
21062/21184 P175D	Clutch 1 opens unintentionally	Update TCU software, if the issue persists, replace mechatronic
21063/21185 P176E	Clutch 2 opens unintentionally	Update TCU software, if the issue persists, replace mechatronic
P284A, P284B, P284C, P284D, P284E, P284F, P2849, P2850		Shift fork (or its magnetic sensor) damaged or contaminated. First check and clean metal debris on shift fork and its sensor. Then measure if the magnetic field still exists.
P0C2A00 with DFCC 38527	Auxiliary Transmission Fluid Pump, Motor unable to actuate	Replace the accumulator in the transmission valve body
P0B0C00 with DFCC 38528	Auxiliary Transmission Fluid Pump Hydraulic Leakage	Replace the accumulator in the transmission valve body

Gear adoption (basic settings) abort codes:

These abort codes are likely to happen after a valve body change.

Error Code 6:

Reinstall the mechatronic unit. Make sure shift forks are in “Neutral” positions.

Error Code 8:

Check valve body oil;

Change battery;

Adjust K1 K2 clutches;

Change TCU code to 20;

Check TCU software;

Error code 83, 84, 85, 86, 87, 88, 89:

Sync cone position issue. Check sync cone, shift forks and deformation of mechanical parts.

Error Code 9, 16, 19, 20, 100, 101, 102, 103:

Check clutch. May need to adjust the clutch clearance

Abort code 100 – 103:

Failed to engage/disengage clutch (timeout: 100000ms): clutch distance/clearance greater or shorter than minimum/maximum (20mm)

Error Code 27:

Check magnets on the shift forks and reinstall mechatronic. Make sure shift forks are in “Neutral” positions.

Error Code 45:

Check the oil level.

Error Code 7:

Restart the procedures and turn your key to “on/run” position.

Mechatronic Removal & Installation Guide:

Removal of mechatronic:

DQ200 clutches are capable of self-adjusting, sudden / strong vibration may cause the clutch to lock itself. Do not remove T10407 with the mechatronic removed. Release T10407 slowly after the mechatronic is installed.

It is not recommended to add any additives to the gearbox oil and/or valve body oil.

It is not recommended to reuse gearbox oil and/or valve body oil.

Go to basic setting, channel 61, put the gear in neutral position.

If mechatronic is still unable to be removed, unlock / release the forks manually:

Lift the vehicle and remove the lower cover, release & collect the transmission gearbox oil.

Pull out G641 Sensor, insert T10407 in between valve body push robs and clutch forks, rotate the tool to separate the clutch from the mechatronic:

Remove the bolts as shown in the photo to loose the mechatronic from the gearbox:

Please inspect the shift fork magnets to make sure they are oriented correctly (if replaced), and they are all free of metal debris and contaminations: