Call now 07534 852773

ECU & emissions specialists · Leicestershire

Warning light on? We'll explain it.

Tap the light on your dashboard. We'll tell you what it means in plain English, then fix it.

Check my warning light → Book a check
★★★★★5-star Google reviews
QualifiedDiagnostic technicians
Mallory Park HQEasy reach from Leicester, Coventry, Nottingham
Since 2020Sister to Mallory Performance ↗ DIY optionFix it yourself from £365 →

Step 1 · Your dashboard

Which light can you see?

Pick the one that looks most like yours. No car knowledge needed. Not sure? Send us a photo on WhatsApp.

12:0014°C
84,216 miD

Tap the light that's on in your car

SYSTEM● RESULT

Safe to drive?

Common causes
Typical codes

Step 2 · Get it fixed

A garage or code reader may have given you one. It starts with a letter, like P0401.

ECU diagnostics

Proper diagnostics. Not guesswork.

A fault code only tells you where the car noticed a problem. It doesn't tell you what caused it. That's why so many people get told the wrong thing, and pay for parts they didn't need.

The guesswork way

Read the code. Swap the part.

  1. Code says EGRNew EGR valve fitted
  2. Light comes backNew sensor fitted
  3. Light comes back againAnother visit, another bill

3 visits · 2 parts · still not fixed

The ECU Solutions way

Find the cause. Fix it once.

  1. Code says EGRWe test the valve, its signal and live data
  2. Real cause foundA split boost pipe, not the valve
  3. Fixed first timeLight stays off

1 visit · 1 fix · money saved

Example only. Every car is different.

What a proper check includes

Done by qualified diagnostic technicians

Using dealer-level tools, the same as main dealers use. You get a clear answer, in plain English, before any work is done.

Book a diagnostic check → Read more about diagnostics →
  1. Read every engine codeCurrent and stored codes, plus when they happened.
  2. Watch live dataSensor readings, fuel trims, boost, temperatures and DPF and AdBlue values while the engine runs.
  3. Test the suspect partsCheck the part and its signal, and smoke test for air and boost leaks, so we know what's really faulty before anything is replaced.
  4. Find the root causeThe real reason, not just the part the code names.
  5. Explain and price itWhat's wrong, what it needs, and the cost. You decide before we start.
A blocked AdBlue injector next to a new one
AdBlue injector · old vs newFIXED

Real jobs

The car others couldn't fix.

We don't just read the code and swap parts. We find the real cause first. That's why people come to us after other garages give up.

"Multiple garages could not diagnose my misfire, the techs found the problem and solved it same day for a good…"

★★★★★Ollie Lord · Google

"We had a car in with an AdBlue issue that a number of companies could not resolve. We called Jamie and within…"

★★★★★HSC Support · Google

"Perfect experience! All of their team is so friendly, helpful and knowledgable! I will definitely be using…"

★★★★★Chloe Wilkinson · Google

"My experience with ECU Solutions UK was perfect. From start to finish the process was smooth and the guys…"

★★★★★Danny Thompson · Google

Before you call

Engine specialists. Not auto electricians.

We only work on the engine ECU and the systems it controls. Check your problem is on the left before you book.

✓We fix

✕We don't do

  • Body control modules (BCMs)
  • Retrofitting parts or coding new features
  • Lights, central locking, windows, alarms
  • Wiring, batteries and general auto electrics
  • Airbag, ABS or other non-engine faults
  • Servicing and MOTs. These are done by our sister company Mallory Park Service Centre ↗

For these, an auto electrician or main dealer is the best place to go.

Fix it yourself

AutoTuner One

Plug it in and follow the steps. Tell us your car first and we'll check it's right for you before you pay. Your original software is always backed up.

Sold through our sister brand DIY AdBlue Fix. Buttons open diyadbluefix.co.uk in a new tab.

All software keeps your car road legal, with emissions systems working · Next-day delivery · UK support

Book us

Bring it to our HQ at Mallory Park.

Every job starts with a proper check. You get a price before we do any work.

Drop in by booking

ECU Solutions HQ

Bring your car to our HQ at Mallory Park. Full diagnostics with dealer-level tools.

Unit 3, Mallory Park Circuit
Leicester LE9 7QE
Open in Google Maps ↗
MON – FRI08:30 – 17:00SAT08:30 – 13:00SUNCLOSED
Call now 07534 852773
Can't get to us?

Call and ask

We're based at our HQ. If your car won't start or you can't get it to us, call us and we'll talk through the options.

Call now 07534 852773

Booking request

Tell us about your car

We'll call you back to confirm a time at our HQ, Unit 3, Mallory Park Circuit, and give you a price. Nothing is booked until we speak.

What do you need help with? (tick all that apply)

We only use your details to reply and book your car in. See our privacy policy.

Prefer to talk? Call now 07534 852773 or email ecusolutionsltd@gmail.com

Areas we cover

Leicester, Coventry and Nottingham.

Our HQ at Mallory Park Circuit is an easy drive from Leicester, Coventry and Nottingham. Can't get to us? Call and ask.

Leicestershire

Leicester

Our HQ is at Mallory Park Circuit, just outside Leicester. We help drivers and businesses across Leicester and Leicestershire with engine lights, AdBlue, DPF and EGR faults, using dealer-level diagnostic tools.

More about Leicester →

Warwickshire

Coventry

We help Coventry and Warwickshire private drivers, tradespeople and fleets. We find the real cause of a fault the first time, so you don't pay for parts you didn't need.

More about Coventry →

Nottinghamshire

Nottingham

We cover Nottingham and Nottinghamshire for engine management and emissions faults on all makes and models. Our HQ at Mallory Park is a straightforward drive down the M1.

More about Nottingham →
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