Fault code U1113-shorted to ground

[GaryK]

Hi all,

SQ5 2013 

very recent problem.

When accelerating hard, engine management light comes on and car goes into limp mode. 

Will not go over 3000rpm and other things like cruise control do not function. Once I stop and switch engine off and on again it’s back to normal, until I accelerate hard again. Had a quick diagnostic check at local garage and it came up with fault code U1113 shorted to ground? 

Would take car straight to my Audi dealer but they are so expensive and I don’t trust them with maintenance costs. 

Any advice greatly appreciated, thanks.

[Steve Q]

Welcome to the forum Gary, you'll find the members on here are a friendly and helpful bunch :) 

Sorry this topic hasn't been responded to yet. If you don't want to take it to Audi then id advise taking your Audi to an independent specialist or auto electrician as it could take a while to find the poor earth. As a guess I'm wondering if a loose component is moving under hard acceleration which is causing the short. Hope that makes sense.

Cheers

Steve

[Magnet]

Hello Gary,

Sorry to hear of your problem, and I guess it's now resolved, but incase anyone follows this in the future, I think it would be useful/essential to know what circuit has a short to ground/earth. 

This short circuit should result in blowing the fuse which protects that circuit. It is unlike a poor earth where the circuit is not completed because of that poor earth - that sort of problem is know as an open circuit. 

Kind regards,

Gareth.

[GaryK]

Thanks Steve,

I’d used a local garage for that diagnostic and I think he specified a different engine when he plugged it in. Anyway, all resolved now. Audi main dealer tried to rip me off. Diagnostic showed “Exhaust GasTemperature Sensor Circuit - Bank 1”, they insisted that they would have to remove the CAT to investigate further at a cost of £526.97!! I said no and took it to an independent Audi specialist who diagnosed the same fault and simply replaced the sensor! Problem solved for £300 including labour! They didn’t understand why the CAT should be removed when the diagnostic has indicated what the problem is! Just replace the faulty part, which is near the turbo apparently.

in addition to this, the Audi main dealer stated that my rear pads were 90% worn and both they and the rear discs had to be replaced, cost £475! They also said that both front bushes had to be replaced because they had small splits in them. I refused all work and took my car to the independent garage (which I will name if anyone wants to know). They were so professional and down to earth. Replaced the sensor, found my rear pads were only 60-70% worn and the discs did not require replacing. They also stated that the bushes were fine and pointed out that under warranty, Audi main dealers would never replace the bushes unless they were split all the way round. 

I estimated that the total work at the main dealer including service and diagnostic would have been around £1,800. Total cost at independent garage £595 including VAT and TUNAP oil flush. 

I will be recommending this independent service centre to all my Audi friends.

thanks again Steve.

[Steve Q]

6 hours ago, GaryK said:

Thanks Steve,

I’d used a local garage for that diagnostic and I think he specified a different engine when he plugged it in. Anyway, all resolved now. Audi main dealer tried to rip me off. Diagnostic showed “Exhaust GasTemperature Sensor Circuit - Bank 1”, they insisted that they would have to remove the CAT to investigate further at a cost of £526.97!! I said no and took it to an independent Audi specialist who diagnosed the same fault and simply replaced the sensor! Problem solved for £300 including labour! They didn’t understand why the CAT should be removed when the diagnostic has indicated what the problem is! Just replace the faulty part, which is near the turbo apparently.

in addition to this, the Audi main dealer stated that my rear pads were 90% worn and both they and the rear discs had to be replaced, cost £475! They also said that both front bushes had to be replaced because they had small splits in them. I refused all work and took my car to the independent garage (which I will name if anyone wants to know). They were so professional and down to earth. Replaced the sensor, found my rear pads were only 60-70% worn and the discs did not require replacing. They also stated that the bushes were fine and pointed out that under warranty, Audi main dealers would never replace the bushes unless they were split all the way round. 

I estimated that the total work at the main dealer including service and diagnostic would have been around £1,800. Total cost at independent garage £595 including VAT and TUNAP oil flush. 

I will be recommending this independent service centre to all my Audi friends.

thanks again Steve.

So glad you got sorted Gary :) it's crap how much Audi tried to rip you off! But at least the silver lining is that you've found an independent specialist who you can trust! Feel free to recommend them on the forum. Here is the dedicated thread for recommendations: 

Cheers

Steve :)