How to fix the 6N2 ABS Signal Outside Specifications Fault
- alexperkins
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How to fix the 6N2 ABS Signal Outside Specifications Fault
Disclaimer - I do not take responsibility for any damage, injury, death or incidents that take place when you are following this guide. It is up to you whether you decide to go ahead.
Should you not feel confident doing this, I can provide a postal repair service - please contact me for details
Credit for parts of this guide go to members of UK-Polos.net
Many of the 6N2s are starting to exhibit ABS pump failure (or so it would seem)
When scanned, it will come up with this error:
01276 - ABS Hydraulic Pump (V64)
16-00 - Signal Outside Specifications
VW want £735 for a new one, but thankfully its a reasonably simple fix providing you are handy with a soldering iron, have a bit of patience and a steady hand
You will need:
A dremel or a hacksaw
Silicone sealant or similar
Self-Amalgamating tape (recommended, but not compulsory)
A Torx E5 socket bit - this is vital you get the right size
Soldering iron and solder
First and foremost, disconnect the Negative battery terminal
Start by removing the ABS module from the ABS pump.
Unplug the ABS loom by pulling the end up and lifting it away (youll see when you do it). Also ensure you disconnect the short ABS pump plug.
Continue by removing the 4 Torx E5 screws very carefully as they arent particularly strong headed, and pull the control module very gently away from the pump
You should now have the control module free to do as you wish with!
Proceed to cut very carefully around the seam that you can see between the top and bottom covers. You only need to go down about 2mm through the plastic - its not very thick and the circuit board is just inside the case therefore MAKE SURE you do not insert anything into the case when you are trying to lever the lid off, you WILL destroy the circuit board!
You should now see this -
In the top left corner is the connector for the ABS pump motor. It is driven by two transistors on two seperate circuits.
Between the two connectors for the pump motor is a simple sensor circuit, if there is no motor plugged in (IE open circuit) this circuit feeds back into the EEPROM IC in the centre of the board and presumably tells the system to shut down and give a fault code as shown above.
You should see this -
Where the two motor pins connect to the board, the solder joint overheats, and cracks creating a 'dry' joint, thus causing the issue you are experiencing.
Apply a good amount of solder to the two joints and make sure you amply heat the existing solder so you get a good solid joint.
When you are happy its complete, take the top cover and carefully apply a bead of silicone around the lip and push the two parts of the case together. Apply another bead of silicone around the join once finished and smooth in with your finger. For added waterproofing, use a length of self amalgamating tape and wrap it around the module covering the join (it bonds to itself providing you stretch it to half its original width)
Refit to the car in reverse order making sure you do not over tighten the bolts, rescan the ABS pump, clear the fault code and it shouldn't come back
Verify it is working by running Output Tests and checking you can hear the pump actuate.
Problem solved
Should you not feel confident doing this, I can provide a postal repair service - please contact me for details
Credit for parts of this guide go to members of UK-Polos.net
Many of the 6N2s are starting to exhibit ABS pump failure (or so it would seem)
When scanned, it will come up with this error:
01276 - ABS Hydraulic Pump (V64)
16-00 - Signal Outside Specifications
VW want £735 for a new one, but thankfully its a reasonably simple fix providing you are handy with a soldering iron, have a bit of patience and a steady hand
You will need:
A dremel or a hacksaw
Silicone sealant or similar
Self-Amalgamating tape (recommended, but not compulsory)
A Torx E5 socket bit - this is vital you get the right size
Soldering iron and solder
First and foremost, disconnect the Negative battery terminal
Start by removing the ABS module from the ABS pump.
Unplug the ABS loom by pulling the end up and lifting it away (youll see when you do it). Also ensure you disconnect the short ABS pump plug.
Continue by removing the 4 Torx E5 screws very carefully as they arent particularly strong headed, and pull the control module very gently away from the pump
You should now have the control module free to do as you wish with!
Proceed to cut very carefully around the seam that you can see between the top and bottom covers. You only need to go down about 2mm through the plastic - its not very thick and the circuit board is just inside the case therefore MAKE SURE you do not insert anything into the case when you are trying to lever the lid off, you WILL destroy the circuit board!
You should now see this -
In the top left corner is the connector for the ABS pump motor. It is driven by two transistors on two seperate circuits.
Between the two connectors for the pump motor is a simple sensor circuit, if there is no motor plugged in (IE open circuit) this circuit feeds back into the EEPROM IC in the centre of the board and presumably tells the system to shut down and give a fault code as shown above.
You should see this -
Where the two motor pins connect to the board, the solder joint overheats, and cracks creating a 'dry' joint, thus causing the issue you are experiencing.
Apply a good amount of solder to the two joints and make sure you amply heat the existing solder so you get a good solid joint.
When you are happy its complete, take the top cover and carefully apply a bead of silicone around the lip and push the two parts of the case together. Apply another bead of silicone around the join once finished and smooth in with your finger. For added waterproofing, use a length of self amalgamating tape and wrap it around the module covering the join (it bonds to itself providing you stretch it to half its original width)
Refit to the car in reverse order making sure you do not over tighten the bolts, rescan the ABS pump, clear the fault code and it shouldn't come back
Verify it is working by running Output Tests and checking you can hear the pump actuate.
Problem solved
- Endi_GTI
- Gold Member
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- Location: Plymouth, UK, Drives Polo 6N2 GTI
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
I did this a couple of months ago and can fully vouch that it works if you get this fault code. Mine has been fine ever since
- alexperkins
- Site Admin
- Posts: 14866
- Joined: Sat Nov 11, 2006 5:29 pm
- Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
- Location: Poole, Dorset, UK.
- Contact:
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
I did it a few weeks ago, and it too fixed the problem perfectly
Whoever said replacement is the way forward can jump haha
Whoever said replacement is the way forward can jump haha
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
This has happened to mine! hopefuly this will solve it, thanks for the how to
probably a stupid question but do i need to bleed the brakes before doing this?
probably a stupid question but do i need to bleed the brakes before doing this?
- alexperkins
- Site Admin
- Posts: 14866
- Joined: Sat Nov 11, 2006 5:29 pm
- Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
- Location: Poole, Dorset, UK.
- Contact:
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
No
This doesn't touch the hydraulics of the brake system
This doesn't touch the hydraulics of the brake system
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
Ahh cool thanks,
il let you know how it goes!
il let you know how it goes!
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
Done this yesterday, fairly easy job, seems to have worked! thanks for the 'how to' and saving me £735!!!
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Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
Did this repair yesterday, and indeed the solder had cracked.
Abs light went out as soon as i connected the pump back up.
Only issue was the E5 torx bit, couldn't find one anywhere local, so i used a 4m all drive spline socket, fitted like a glove.
Abs light went out as soon as i connected the pump back up.
Only issue was the E5 torx bit, couldn't find one anywhere local, so i used a 4m all drive spline socket, fitted like a glove.
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
Got this code come up on mine after replacing the sensors. Not to keen on trying this myself.. you say you do a postal repair service, I'm fairly local to you if you'd repair it if I brought my car to you?
Would be appreciated if you could give me a PM with prices etc, cheers.
Would be appreciated if you could give me a PM with prices etc, cheers.
- alexperkins
- Site Admin
- Posts: 14866
- Joined: Sat Nov 11, 2006 5:29 pm
- Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
- Location: Poole, Dorset, UK.
- Contact:
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
Hi Mate - Ill PM you my email
You won't be able to PM me back, so drop me an email reply
Cheers
You won't be able to PM me back, so drop me an email reply
Cheers
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
Is there anyone in/near South-east London who could help me do this? I'm getting this code, and I don't have the skills to do it. I'd be happy to pay someone for their time. I would also be happy travel quite far... Getting desperate..
Alternatively, does anyone know a garage in London/Surrey/Kent who would do it? my local garage said wont.
Thanks
Alternatively, does anyone know a garage in London/Surrey/Kent who would do it? my local garage said wont.
Thanks
- alexperkins
- Site Admin
- Posts: 14866
- Joined: Sat Nov 11, 2006 5:29 pm
- Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
- Location: Poole, Dorset, UK.
- Contact:
Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
If your capable of removing the control module, you can post it down to me and Ill fix it and send it back for a fee?
Otherwise, I'm in Poole.
Otherwise, I'm in Poole.
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Re: How to fix the 6N2 ABS Signal Outside Specifications Fau
Wow thanks a lot man I owe u this was one of the most successful fix with proper played out detail thanks a million as this really worked out for me now my dash is clean no lights but I have one more issue, when I run the vcds I'm getting a immobilizer error code but my engine doesn't shut off like what I read in other post but I wonder if in the future it's gona be a problem, also there's a second one saying temp signal is too low
Thanks again for the abs fix
Thanks again for the abs fix
- alexperkins
- Site Admin
- Posts: 14866
- Joined: Sat Nov 11, 2006 5:29 pm
- Drives: 91 Golf GTI, 01 TT 225, 54 T5 174
- Location: Poole, Dorset, UK.
- Contact:
Re: How to fix the 6N2 ABS Signal Outside Specifications Fault
You are welcome
Re: How to fix the 6N2 ABS Signal Outside Specifications Fault
Is it ok to drive the car with the module off?