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
P0234 Turbo Overboost
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?

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