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EGR Cooler Bypass

for Euro 6 VAG 1.6tdi and 2.0tdi engines.

clogged egr cooler img

The EGR cooler on the Euro 6 VAG 1.6 and 2.0 diesel engines (2015 onwards) is badly designed leading to a horrible habit of clogging up. The only sign of this is an EML (Engine Management Light) on the dashboard and when diagnosed gives the fault code P2002 which states DPF (Diesel Particulate Filter) efficiency below threshold. The vehicle continues to perform just fine and there’s no other negative effect, at least short term - other than of course with an illuminated EML is an instant MOT failure.


We are still getting reports from clients that their garage is informing them this is caused by a clogged DPF so they must either replace or clean the filter. We’ll if it was a pre Euro 6 model they’d be correct, however, that’s not the case on these Euro 6 engines! What’s actually occurred is the EGR cooler has become clogged.


What is an EGR Cooler? The cooler on the EGR is there to reduce the temperature of the recirculated gases after combustion to allow for more efficiency of the following combustions.


Why does it clog? It’s a stupid concept, if you recirculate these dirty sticky gases with lots of carbon deposits in them they are going to clog up any small pockets such as in a cooler!


What fault does it cause when the EGR cooler clogs up? Well, it’s really simple, theres’ a temperature sensor that reads the temperature after the cooler to ensure the gas temperatures are reduced for the best efficiency of the following combustions when the cooler is no longer doing its job as efficiently as the manufacturer wants that temperature sensor picks up on this and flags the fault code P2002.


Can’t I just clean the EGR cooler? We’ve tried our Hydrogen chemical cleaning as well as physical removal to clean and it is possible to clean enough to remove the EML warning but it’s not a long-term or permanent fix. The problem is when the cleaners go through the EGR cooler they’ll find their way through the least restrictive route leaving the heavily clogged areas still blocked. It’s therefore only a matter of time before the areas that did get cleaned become restrictive again and the EML problem returns.



What options do I have then? Ultimately, it’s either a replacement EGR unit (costs anywhere from £1,200 to £2,400 depending on part quality and labour) or our unique remapping solution that as far as we are aware no one else worldwide can offer.


At just £379.99, or £499.99 with a recommended full engine carbon clean, we have successfully developed an ECU (Engine Control Unit) software solution that resolves this problem whilst keeping the EGR system fully intact and operational therefore unlike an EGR delete (which doesn’t resolve this fault anyway) legal.




FURTHER QUESTIONS? MAKE AN enquiry  ››
Faulty DPF warning light

EGR Cooler Bypass Remap Services

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EGR Cooler Bypass remap

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Our customised remap supplied by one of our mobile technicians to override the egr cooler fault.
For more information please view How Carbon Cleaning Works


Price: £379.99


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EGR Cooler Bypass remap
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EGR Cooler Bypass Remap & 3-stage Carbon Clean

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As above for our EGR cooler bypass software but also taking advantage of our recommended 3-stage carbon cleaning service to ensure the engine is clean and running to optimal efficiency therefore reducing potential for further engine faults.



Price: £499.99


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Upon approval* your invoice is split into 3 equal payments . The first payment is processed on the debit card immediately and you are back on the road. The balance will be split over 2 further monthly payments.

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Modern Reviews Tabs | UKCC Auto Techs
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Over 50,000 Satisfied UK Customers Since 2016

What Our Customers Say

Latest from all platforms
10
Posted 6 October 2026

High Standard of work

Just to say Matts work was to a high standard. He arrived early, focused on the task and did a great job. He completed all tasks required and ran a thorough check afterwards. Very reassuring! A genuine technician and people person. I have no concerns recommending Matt and his company.

Verified reviewer
Job location: KT22 Checkatrade
★★★★★

Booked Winston in today for a swirl flap bypass , one of the most genuine mechanics I've met . After his diagnosis, explained about the split intercooler pipe ( somthing my local garage could not discover ) and best to fix that first before proceeding with swirl flaps . Best £90 ive ever spent . I may need him again after fix of intercooler pipe for the bypass , but a big thank you for your honesty .

RH
Ryan Hague Sep 25, 2026
Trustpilot

Excellent service

I was really impressed with the information Jason provided me with. Nice to come across an honest company who put customers first! Highly recommend.

10
Posted 8 November 2025

Job well done

Thank you Matt, Arrived bang on time carried out arranged work to my Audi and a bit more and some great advice .

Verified reviewer
Job location: RH10 Checkatrade
★★★★★

Very professional job done by Matt. First day the car didn’t delete for some software issue but he promptly came over to re-do the job to make sure everything worked properly next day.

AM
Alan Moore Sep 22, 2026
Trustpilot

I had Technician Cristian Nicolaie come…

I had Technician Cristian Nicolaie come to my home on Friday morning to diagnose and clean my DPF filter and remove carbon build-up from the engine. From the moment Cristian arrived, he was polite, friendly and professional. He asked me a few questions about the car, explained what he was going to do and talked me through the possible cause of the problem. He also gave me some really useful advice on how to help prevent the problem from happening again. Cristian carried out the work professionally and got the car back to normal. The diagnostic test afterwards showed that everything was working as it should. What made this even more important to me was that I was due to go away that day and had to tow my caravan. After speaking with Cristian, he gave me complete confidence that the car was going to be okay — and he certainly didn’t disappoint. I towed my caravan with no problems at all, and the car performed perfectly. I live in the BS15 area, and I would have absolutely no hesitation in recommending Cristian Nicolaie to anyone experiencing problems with their car. If the other technicians within the company have the same level of professionalism, knowledge and customer service as Cristian, then I would happily recommend the company as well.

★★★★★
10/10
Read all reviews →
10
Posted 6 October 2026

High Standard of work

Just to say Matts work was to a high standard. He arrived early, focused on the task and did a great job. He completed all tasks required and ran a thorough check afterwards. Very reassuring! A genuine technician and people person. I have no concerns recommending Matt and his company.

Verified reviewer
Job location: KT22 Checkatrade
10
Posted 8 November 2025

Job well done

Thank you Matt, Arrived bang on time carried out arranged work to my Audi and a bit more and some great advice .

Verified reviewer
Job location: RH10 Checkatrade
10
Posted 14 August 2025

Full Carbon Clean and remap

I had the pleasure of meeting Matt today. He was on time, gave great advice, honest feedback, great sense of humour - everything you would want from your technician. Never makes you feel stupid. Explained how the remap works. I'm only disappointed he didn't take a picture of my car for his portfolio.

Verified reviewer
Job location: SL9 Checkatrade
10
Posted 9 June 2025

Cleaned DPF and engine very sufficient. Very happy with the service highly recommended.

Cleaned DPF and engine very sufficient. Very happy with the service highly recommended.

Verified reviewer
Job location: RH12 Checkatrade
10
Posted 9 June 2025

Egr issue resolved on my Audi in Kent

Very good and efficient

Verified reviewer
Job location: ME1 Checkatrade
10
Posted 20 May 2025

DPF and egr clean and reset

Great advice from Cristian the technician who advised and then did the job very well thank you very much.

Verified reviewer
Job location: NP44 Checkatrade
★ ★ ★ ★ ★
4.5/5
Read all reviews →
RH
Ryan Hague Sep 25, 2026
Trustpilot

Excellent service

I was really impressed with the information Jason provided me with. Nice to come across an honest company who put customers first! Highly recommend.

AM
Alan Moore Sep 22, 2026
Trustpilot

I had Technician Cristian Nicolaie come…

I had Technician Cristian Nicolaie come to my home on Friday morning to diagnose and clean my DPF filter and remove carbon build-up from the engine. From the moment Cristian arrived, he was polite, friendly and professional. He asked me a few questions about the car, explained what he was going to do and talked me through the possible cause of the problem. He also gave me some really useful advice on how to help prevent the problem from happening again. Cristian carried out the work professionally and got the car back to normal. The diagnostic test afterwards showed that everything was working as it should. What made this even more important to me was that I was due to go away that day and had to tow my caravan. After speaking with Cristian, he gave me complete confidence that the car was going to be okay — and he certainly didn’t disappoint. I towed my caravan with no problems at all, and the car performed perfectly. I live in the BS15 area, and I would have absolutely no hesitation in recommending Cristian Nicolaie to anyone experiencing problems with their car. If the other technicians within the company have the same level of professionalism, knowledge and customer service as Cristian, then I would happily recommend the company as well.

MS
MR SHANE SMITH Sep 6, 2026
Trustpilot

Ukcc auto techs Christian attended my…

Ukcc auto techs Christian attended my property to diagnose my van which had dpf issues and a ad blue problem. Christian was very informative explaining what was happening with my van. Christian then proceeded to clean the dpf and the ad blue fault was very professional explaining the process at all times. I would recommend Christian to anyone who has problems with there dpf or any ad blue faults thanks again Shane

AG
Ariane Grimshaw Aug 21, 2026
Trustpilot

Extremely happy with the service…

Extremely happy with the service Cristian provided - he was knowledgeable, professional and efficient. Would highly recommend!

KI
Kirsty Aug 20, 2026
Trustpilot

I had a stage 3 clean done today

I had a stage 3 clean done today. The gentleman was very polite and knowledgeable. Very good service. Would recommend to others.

RR
robert righton Aug 20, 2026
Trustpilot

Christian DPF repair

Christian arrived as planned and was very helpful in explaining the diagnostics and what was needed Repair work carried out promptly I had a further issue later in day and Christian met me in evening to sort that issue also at no extra cost Highly recommend him and will be using him again if needed Rob

★★★★★
4.4/5
Read all reviews →
★★★★★

Booked Winston in today for a swirl flap bypass , one of the most genuine mechanics I've met . After his diagnosis, explained about the split intercooler pipe ( somthing my local garage could not discover ) and best to fix that first before proceeding with swirl flaps . Best £90 ive ever spent . I may need him again after fix of intercooler pipe for the bypass , but a big thank you for your honesty .

★★★★★

Very professional job done by Matt. First day the car didn’t delete for some software issue but he promptly came over to re-do the job to make sure everything worked properly next day.

★★★★★

Thank you for the 5-star rating, Thomas! We’re delighted you had a great experience and appreciate your support. We look forward to welcoming you back soon.

★★★★★

best work ...

★★★★★

Thank you Christian being so prompt in coming to fix and diagnose the problem I have with my vehicle , service was very prompt with excellent knowledge behind him . I would definitely recommend Christian 100% . Will definitely recommend and use him again . Thankyou for your help

★★★★★

Perfect job thank you so much


Faq

An average of 60-90 minutes but we recommend allowing for 2 hours.

Unlike just a clean (which will not resolve the fault) as long as your vehicle only has the P2002 fault code and is otherwise healthy your vehicle's engine will run perfectly immediately after the service and there are no longer-term negative effects.

As with any form of remap file writing, there is always a tiny risk of failure which can lead to difficulties but these can always be recovered. The question shouldn’t be if there are risks but if there was a problem how is it handled? You’ll be pleased to know all our technicians are highly skilled and trained using only the best equipment to protect your vehicle from the risks of damage during the ECU remapping process. Saying that we would not take any risks with your vehicle so for peace of mind UKCC Auto Techs guarantees you that all our technicians are fully insured.

Certainly not. We are a worldwide brand with CE-marked machines, operating in over 50 countries with 100’s of machines being used daily – never has there been an engine damaged from our engine carbon cleaning process. No competitor can give you peace of mind on that scale.

Yes. If you’ve been told or heard differently elsewhere you’re unfortunately been lied to. The good news is this only applies to manufacturer warranties (third-party warranties won’t be affected). Manufacturers make painstaking efforts to clearly state that unapproved modifications to any components will void their warranty so if your vehicle has a manufacturer warranty then you should think twice before having such a service performed on the vehicle.

Yes, because this is just a software fix it would be a simple process of installing the original file on the ECU. We permanently retain your original file just in case you ever require us to reverse the process.

Yes, we offer multi-service and multi-vehicle discounts, discuss this with your local technician.

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