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Automatic Gearbox Fault


paradisiac82
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Hi,

Recently purchased an A4 Avant 3.0 TDI Quattro S-Line with the intention of breaking it, however with the condition it is in and the spec thought I might try to get it on the road. I drove it about 10miles to the MOT centre, it wouldn't go above 4th gear but it mainly just stayed in 3rd gear. There are no dash lights on, car drove really nicely, would rev as expected, not juddery gear changes, just wouldn't go up past 4th (even when switched to manual and using the flappy paddles). When I purchased it they said that they had recently done a gearbox fluid and filter change and the problem came on not long after, although how much of this is true I don't know.

 

I have scanned with VCDS and get the following codes

 

17167 - Shift Monitoring 
            P0783 - 000 - 3-4 Shift - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 204132 km
                    Time Indication: 0

             Freeze Frame:
                    RPM: 2496 /min
                    RPM: 2336 /min
                    RPM: 1248 /min
                    (no units): 42.0
                    (no units): 101.0
                    Temperature: 28.0°C
                    T.B. Angle: 54.5°

17119 - Gear 5 
            P0735 - 000 - Incorrect Ratio
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 204152 km
                    Time Indication: 0

17167 - Shift Monitoring 
            P0783 - 001 - 3-4 Shift
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 204132 km
                    Time Indication: 0

             Freeze Frame:
                    RPM: 2496 /min
                    RPM: 2336 /min
                    RPM: 1248 /min
                    (no units): 42.0
                    (no units): 101.0
                    Temperature: 28.0°C
                    T.B. Angle: 54.5°

 

can anyone point me in the best direction to diagnose the probable issue, and rough price to fix?

 

TIA

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If you've bought it from a dealer in the last 30 days then they have an obligation to fix it. Or you can ask for your money back. 

If it was a private seller then they might have fobbed you off. Usually a gearbox oil change is the first thing to be done if the auto gearbox starts playing up. 

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1 hour ago, Steve Q said:

If you've bought it from a dealer in the last 30 days then they have an obligation to fix it. Or you can ask for your money back. 

If it was a private seller then they might have fobbed you off. Usually a gearbox oil change is the first thing to be done if the auto gearbox starts playing up. 

Hi, it was bought privately, I knew there was this fault, but it was cheap. It has Xenon lights, full heated leather interior, S-Line bumpers etc so I knew I would get my money back breaking it, but it seems a shame to break it if this is not a massively expensive fault

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23 hours ago, paradisiac82 said:

Hi, it was bought privately, I knew there was this fault, but it was cheap. It has Xenon lights, full heated leather interior, S-Line bumpers etc so I knew I would get my money back breaking it, but it seems a shame to break it if this is not a massively expensive fault

Could be as simple as a sensor or the module. If the latter it won't be cheap 

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1 minute ago, Steve Q said:

Could be as simple as a sensor or the module. If the latter it won't be cheap 

do you have any suggestions on how to diagnose? when you say not cheap, how expensive is "worst" case?

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Just now, paradisiac82 said:

do you have any suggestions on how to diagnose? when you say not cheap, how expensive is "worst" case?

I think a module change will be a few hundred quid. Obviously worse case scenario is a knackard gearbox. But at this stage my money's on the module or sensors. 

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Just now, Steve Q said:

I think a module change will be a few hundred quid. Obviously worse case scenario is a knackard gearbox. But at this stage my money's on the module or sensors. 

ah a few hundred isn't too bad, like I said, car was really cheap, so would still be worth doing. What sensors are linked to these boxes? is there an easy way of knowing which gearbox I have without getting under the car to read it off the box? I keep getting told the CVT boxes are awful, but then some places say only the FWD boxes are bad.......

 

with the module is it just a case of ordering a new one and swapping it out? or do they need coding in

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7 minutes ago, Steve Q said:

I think a module change will be a few hundred quid. Obviously worse case scenario is a knackard gearbox. But at this stage my money's on the module or sensors. 

Does any of this say which the box is?

 

Address 02: Auto Trans        Labels: 09L-927-760.lbl
   Part No SW: 8E1 910 156     HW: 09L 927 156 
   Component: AG6 09L 3.0lTDI RdW 0050  
   Revision: --H01---    Serial number:        4001661
   Coding: 0000001
   Shop #: WSC 06325 000 00000

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1 minute ago, Steve Q said:

The CVT gearbox is known as a weak gearbox. Has the car been used for towing? If so that won't have helped it's condition. I think the modules are known to be more unreliable on the CVT. 

No, luckily the tow bar was one of the only optional extras the owner didn't go with when they got the car, so never towed 🙂

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Just now, paradisiac82 said:

No, luckily the tow bar was one of the only optional extras the owner didn't go with when they got the car, so never towed 🙂

That's a good thing! I'd definitely say the module. The serial number seems to be present on that diagnostic check you've done. 

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Just now, Steve Q said:

That's a good thing! I'd definitely say the module. The serial number seems to be present on that diagnostic check you've done. 

how do I go about getting a replacement module (is this the box thats inside the panel under the car?)? I did a quick search for 09L 927 156 and several second hand ones pop up, does the software version etc have to all match up too?

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9 minutes ago, paradisiac82 said:

how do I go about getting a replacement module (is this the box thats inside the panel under the car?)? I did a quick search for 09L 927 156 and several second hand ones pop up, does the software version etc have to all match up too?

I think you might find it'll have to be coded to the car. Do t quote me on this though. 

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1 minute ago, Steve Q said:

I think you might find it'll have to be coded to the car. Do t quote me on this though. 

ok no worries, at least it sounds fixable 🙂 is there anything you know of I can do with VCDS to log/change to narrow down the possible cause or is this a specialist workshop job?

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1 hour ago, Steve Q said:

I think you might find it'll have to be coded to the car. Do t quote me on this though. 

Sooo.....I cleared the codes (after fitting a new battery the codes didn't come straight back) and took it for a drive around my car park (no MOT so can't go on the roads 😞), only managed to get to 3rd gear due to the short distances, but codes have not come back yet (not sure if it needs to try to get into 4th, 5th, 6th before it realises there is a fault). It did however feel the same as though the clutch was slipping in a manual when it changed gear, not sure if that is normal or not. Put it in S mode and it launches really well, surprised how much it pulls from standing.

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3 minutes ago, Steve Q said:

That's positive 🙂 the slipping clutch sensation is probably the cause of the issue. 

Will have to wait until I get it MOT ready then will see if the fault comes back. There are a few other issues that need sorting too now I have done a VCDS scan lol

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Just now, paradisiac82 said:

Will have to wait until I get it MOT ready then will see if the fault comes back. There are a few other issues that need sorting too now I have done a VCDS scan lol

Oh dear like what? Have to say it's always the way lol 

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2 minutes ago, Steve Q said:

Oh dear like what? Have to say it's always the way lol 

005489 - Left Engine Mount Solenoid Valve (N144) 
               P1571 - 001 - Short to Plus
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 3
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 756 /min
                    Torque: 46.8 Nm
                    Speed: 0.0 km/h
                    Voltage: 14.06 V
                    Bin. Bits:        0
                    Bin. Bits:        0
                    Bin. Bits:        0

005658 - Glowplug for Cylinder 1 (Q10) 
               P161A - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005659 - Glowplug for Cylinder 2 (Q11) 
               P161B - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005660 - Glowplug for Cylinder 3 (Q12) 
               P161C - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005661 - Glowplug for Cylinder 4 (Q13) 
               P161D - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005662 - Glowplug for Cylinder 5 (Q15) 
               P161E - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005663 - Glowplug for Cylinder 6 (Q15) 
               P161F - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

012697 - Control Circuit for Intake Manifold Runner (Bank2) 
               P3199 - 002 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 0
                    Fault Frequency: 10
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 0 /min
                    Torque: 241.8 Nm
                    Speed: 0.0 km/h
                    Voltage: 11.55 V
                    Duty Cycle: 84.8 %
                    Duty Cycle: 0.4 %
                    Duty Cycle: 20.5 %
 

Hoping the glow plugs is a fuse/relay?

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2 minutes ago, paradisiac82 said:

005489 - Left Engine Mount Solenoid Valve (N144) 
               P1571 - 001 - Short to Plus
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 3
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 756 /min
                    Torque: 46.8 Nm
                    Speed: 0.0 km/h
                    Voltage: 14.06 V
                    Bin. Bits:        0
                    Bin. Bits:        0
                    Bin. Bits:        0

005658 - Glowplug for Cylinder 1 (Q10) 
               P161A - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005659 - Glowplug for Cylinder 2 (Q11) 
               P161B - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005660 - Glowplug for Cylinder 3 (Q12) 
               P161C - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005661 - Glowplug for Cylinder 4 (Q13) 
               P161D - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005662 - Glowplug for Cylinder 5 (Q15) 
               P161E - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

005663 - Glowplug for Cylinder 6 (Q15) 
               P161F - 001 - Open Circuit
             Freeze Frame:
                    Fault Status: 01100001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 882 /min
                    Torque: 105.3 Nm
                    Speed: 0.0 km/h
                    Duty Cycle: 1.0 %
                    Voltage: 14.21 V
                    Duty Cycle: 24.1 %
                    Temperature: 15.3°C

012697 - Control Circuit for Intake Manifold Runner (Bank2) 
               P3199 - 002 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 0
                    Fault Frequency: 10
                    Reset counter: 255
                    Time Indication: 0

             Freeze Frame:
                    RPM: 0 /min
                    Torque: 241.8 Nm
                    Speed: 0.0 km/h
                    Voltage: 11.55 V
                    Duty Cycle: 84.8 %
                    Duty Cycle: 0.4 %
                    Duty Cycle: 20.5 %
 

Hoping the glow plugs is a fuse/relay?

You've got your work cut out lol. 

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