Auto Gearbox Problem.

[Tinnycan]

This happened me last night when it was in reverse, drove maybe 200 yds in R.

Got the error on dash that I can drive with limited function. Car would only drive at 10 mph.
So stopped and restarted car again, fault now saying that I can drive. Driving ok again but these are the faults I got.

2 Faults Found:
005955 - Clutch Slip Monitoring
P1743 - 000 - Signal too Large - Intermittent
Freeze Frame:
Fault Status: 00110000
Fault Priority: 0
Fault Frequency: 3
Reset counter: 255
Mileage: 237911 km
Time Indication: 0
Date: 2014.04.06
Time: 20:00:48
Freeze Frame:
RPM: 2784 /min
RPM: 220 /min
(no units): 31.0
Torque: 40.0 Nm
Temperature: 74.0°C
T.B. Angle: 24.4°
Bin. Bits: 0110 0 0

006031 - Pressure Regulation Valve
P178F - 000 - Dirty / Clogged
Freeze Frame:
Fault Status: 01100000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 237911 km
Time Indication: 0
Date: 2014.04.06
Time: 20:01:09
Freeze Frame:
RPM: 864 /min
RPM: 70 /min
(no units): 21.0
Torque: 2.0 Nm
Temperature: 76.0°C
T.B. Angle: 55.6°
Bin. Bits: 0110 0 0
Address 02: Auto Trans Labels: 01J-927-156.lbl
Control Module Part Number: 4F5 910 157 F HW: 01J 927 156 JG
Component and/or Version: V30 01J 2.0l CR RdW 0010
Software Coding: 0000001
Work Shop Code: WSC 02325 785 00200
VCID: 2C5CF4368F891B7E17F-8079

I Cleared the faults and drove car for a while and rescanned again and got this fault now

1 Fault Found:
006031 - Pressure Regulation Valve
P178F - 000 - Dirty / Clogged
Freeze Frame:
Fault Status: 01100000
Fault Priority: 0
Fault Frequency: 3
Reset counter: 255
Mileage: 237943 km
Time Indication: 0
Date: 2014.04.06
Time: 21:08:28
Freeze Frame:
RPM: 96 /min
RPM: 0 /min
(no units): 1.0
Torque: -30.0 Nm
Temperature: 70.0°C
T.B. Angle: 0.0°
Bin. Bits: 0101 0 0

The fault will not clear and the light comes on when ignition is switched on.
Any ideas before I bring It to Audi ?

[Guest 2]

When was the fluid and filter last changed?

Make sure your VCDS is running 12.12.2 too.

[Tinnycan]

When was the fluid and filter last changed?

Make sure your VCDS is running 12.12.2 too.

About 50K miles Chris.

[Guest 2]

50k ago? If so it's 12k overdue a change.

[Tinnycan]

50k ago? If so it's 12k overdue a change.

Was looking at a how to, but noticed my gearbox LDQ looks different. No bottom square plate. Will get a proper look tomorrow as it was raining today. Thanks

[Guest 2]

Get a specialist to do it.

Don't confuse your gearbox with tiptronic as your car isn't quattro!!

[Tinnycan]

Get a specialist to do it.

Don't confuse your gearbox with tiptronic as your car isn't quattro!!

Will do so, Thanks again.

[Tinnycan]

Got the car looked at by 7th gear in Dublin. Gearbox seems ok, they are taking the ecu out and going to go through it. Leaving it back on Monday for them to do an oil change & ecu repair.
The same fault happened again when he went into reverse and drove it a bit hard,
Will let you know the outcome, next week.

[Tinnycan]

Just an update, got the oil changed. He had a look at the ecu and said that it was perfect. He would have to open up the gearbox to see if he could see anything wrong, but said that it was driving perfect except for the hard driving in reverse. He advised to keep driving until something went really wrong, but couldn't understand why he couldn't clear the fault as he never came across this. Might get a second opinion on it in a few weeks time.
Will update when I get more info.

[Tinnycan]

Since the oil has been changed, this fault hasn't returned. Although I never took to driving hard in reverse.
I got onto Ross Tech for some info on clearing the Fault as VCDS wont clear it. Here is the reply just in case anyone gets the fault.

With the P178F code, the factory documentation shows to replace the
Mechatronic Unit. What little I do find on this specific fault code
seems to imply that "extended oil services" can cause this. Having said
that... CVT Mechatronic Units fail often anyway.

Note that when a new Mechatronic Unit is installed, the dealer may have
to match it to the vehicle. You might get a "Locked" type fault code in
the TCM and the car may not move under its own power. 2007 and newer
Audi vehicles might run into this.