Audi fault code P0234 Turbo Overboost – Audi A3 1.9 TDI (2007 – 104,873 miles) – diagnostic and Engine Carbon Clean

⭐⭐⭐⭐⭐ ‘Audi A3 my car was going into limp mode and had a code P0234 come up was quoted £1600 for a new turbo from a garage so I thought I’d try this service. Top notch car runs better and I haven’t any issues since.’

Audi fault code P0234 Turbo Overboost Audi A3 1.9 TDI (2007 – 104,873 miles)

Reason for booking in…
‘Smokes a bit on start-up and it goes into limp mode when it’s very cold weather…I thought I’d get this done 1st then go from there.’

Initial inspection found no obvious issues in the engine bay with no rattles and shakes, but a tell tale rumble in the engine from the carbon present.

Initial code read showed…
Audi fault code P0234 Turbo Overboost had been on recently

Live data was generally fine apart from the vehicle running a little cool and taking a long time to warm up – lazy thermostat

‍On with the clean and It soon smoothed out, quietened down and by the end it was quiet, smooth and responsive again.

Audi fault code P0234
Audi fault code P0234
Audi fault code P0234

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Engine Carbon Cleaning FAQs

What does an Engine Carbon Clean do?

Keeping your engine cleaned on a regular basis helps prevent issues such as DPF issues, MOT emissions failures or sticking turbos. It also helps prevent issues such as DPF issues, MOT emissions failures or sticking turbos. An Engine Carbon Clean is great at cleaning up the back of a turbo, combustion chamber, injector tips, pistons, cylinders and cats to get a vehicle running smooth, quiet, responsive, economical and emissions friendly again.

What does DPF Cleaning do?

A mobile service to properly diagnose, clean and reset a DPF.  Suitable for soot and oil blockages and on a maintenance basis to avoid residual ash accumulation, causing regeneration issues. DPF Investigation and Clean Service

Can you carbon clean a petrol engine?

Yes. All hydrocarbon engines create carbon build up depending on the mileage, driving style, journey length and fuel quality used. You can clean petrol, diesel, LPG, hybrid or anything else such as methane.  Not just cars and vans, but we also work on boats, tractors, tanks, generators, landfill engines, anything really.

What are signs of carbon build up?

Typical symptoms include a decline in fuel economy, noisier engine, increased vibration, sluggish response and smoke/emissions levels. As fuel economy and emission targets have got stricter over the years the engine components have been developed and added in order to keep the soot within the vehicle rather than passing it out through the exhaust. This then clogs up EGR valves, inlet manifolds and DPFs.

When should you Engine Carbon Clean?

If you have just bought a vehicle or warranty is due to expire then it is a perfect time to get it checked out and cleaned up. As part of your regular maintenance plan an ideal time is just prior to a service or MOT to help keep your vehicle running smoothly, quietly, economically and with low emissions. Most people are coming back for repeats approximately every 15-20k miles based on driving style, journey length and fuel quality.

Does Carbon Engine Cleaning actually work?

Yes it does and it is very good at what it does as long as the relevant pre-checks are performed to ensure an effective clean and critically it is done by someone who is properly trained, certified, with the right approach and equipment.

Still got questions?

Reviews For our Engine Carbon Cleaning Services

Owen Simpson profile picture
Owen Simpson
1 month ago
Adrian is a lovely fella, explained the process, carried it out well, clearly done exactly what it needed to do as I blew a load of stuff out the back when I drove it after. Will definitely be coming back in the future.
kenny bennet profile picture
kenny bennet
1 month ago
Great job
Car running a lot better

Highly recommend
Iain Tribick profile picture
Iain Tribick
1 month ago
Steve arrived to give my Jaguar xfs an engine carbon clean. Presently on 107,000 miles. Explained the process and was obviously very knowledgeable about the process and expected outcomes. And he was a thoroughly nice chap.
The V6 in the xfs is a quiet, smooth, powerful unit and I was not sure of what improvements I would get. Well, I’m impressed. The power delivery is smoother, the engine even quieter and 6 mpg better to boot.
If you want to do one thing to maintain and improve your motor, then this is what you should do.
Mircea Marius Popa profile picture
Mircea Marius Popa
2 months ago
Had the pleasure to meet Adrian this morning who performed a carbon clean on my bmw 525d
Very knowledgeable guy, I was really impressed.
Car drives much better now, highly recommend.

Thanks Adrian

Marius Popa
Mark Woolley profile picture
Mark Woolley
2 months ago
Adrian went above and beyond at every stage. Couldn’t recommend Adrian as a person and the service highly enough.
william farrell profile picture
william farrell
2 months ago
had my jaguar xf sportsbreak car engine cleaned and omg its like new what a great job the power is back Engine diagnostic was brilliant and the service was so good. I would recommend it to anybody.
Tracey Jane King profile picture
Tracey Jane King
2 months ago
Leon came out to my car about a month ago. He was brilliant, he did some diagnostics, asked some questions and then got to work sorting out my problem. He was extremely thorough and I could tell he genuinely cares about providing a first class service. Fantastic!
Brad G profile picture
Brad G
2 months ago
Iv had the pleasure of having 2 Carbon cleans from both Adrian and Mark. Both lovely gentlemen and you can tell they love what they do. My car failed on emissions and this helped me get the car through the test, and at the time, I REALLY needed a pass because I couldn’t get anywhere. These guys saved me. Not only that, it’s a lot cheaper here compared to other places also. Thank you so much and look forward to seeing you in future endeavours.
Robert Bedford profile picture
Robert Bedford
2 months ago
Great ppl full of advice and very helpful quick to reply definitely use again thanks guys
Graham Ward profile picture
Graham Ward
2 months ago
First class service, very professional and nice guys.
Very knowledgeable on issues with electrical problems with my car.
Arrived on time and completed the work as you would expect from a good reliable company.
Kimberley Everest profile picture
Kimberley Everest
3 months ago
What a great experience with Steve today! From start to finish went through the diagnostics step by step with me, explaining everything in detail! Flushed and cleaned the dpf for me cannot fault him at all, work done at ur front doorstep would definitely recommend Thankyou so much for all your help!
Gary Simpson profile picture
Gary Simpson
3 months ago
Today Adrian from F5 Carbon7 DPF Clean came to de carbonise my xc60 he arrived bang on time he was very courteous and explained in great detail what the process was .
He set up within 5 minutes and went on to the diagnostics and talked me through what was coming up after a reset all was clear. It took about 1 hour in total great job well happy would definitely recommend Adrian well mannered gentleman.

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