Diagnostics| Sompting, West Sussex
Audi Fault Finding
Engine warning light or EPC light on, gone into limp mode, or your Audi just not driving the way it should? Our Audi specialists at Cedar Garage German Car Specialists in Sompting, just outside Worthing, use Audi-specific diagnostic equipment and manufacturer data to find the real cause, then explain it clearly and give you a quote before any repair work starts.
Dealer-Level Equipment
Why Choose Cedar Garage for Audi Fault Finding?
Reading a fault code is only the start. A code tells us which system has spotted a problem, not always what has caused it, so accurate Audi fault finding means reading live data, testing sensors and wiring, and using the experience of technicians who work on Audis every day. That's how we avoid guesswork and stop you paying for parts you don't need.
For Audi diagnostics, our technicians use the same level of equipment as the main dealers, and we have fixed faults on cars that other garages, and on occasion dealers, couldn't. We look after the whole range, from the A1, A3 and A4 to the A6, Q3, Q5, Q7, TT and e-tron, for drivers across Worthing, Lancing, Shoreham and the surrounding area. If your Audi isn't safe to drive, we can collect it and deliver it back to you, and we can provide a hire car while it's with us. We'll never spend more of your money without your approval.

Audi Warning Lights and Faults We Investigate
From an engine warning light, EPC light or flashing gearbox warning to a car that's in limp mode, has lost power or has an electrical fault that comes and goes, our Audi fault finding covers every system on your car. These are some of the most common problems we're asked to track down.
Engine warning light & DPF faults
EPC light
Limp mode & loss of power
Gearbox & S tronic warnings
AdBlue warnings
Brake & ABS warnings
Air suspension & steering faults
Electrical & lighting faults
Tyre pressure warnings
Battery drain & flat batteries
Other Audi Services We Specialise In
Once we've found the fault, we can put it right and keep your Audi running at its best with our other specialist Audi services.

DVSA-Approved Testing
Audi MOT
A warning light can mean an MOT failure. Our DVSA-approved testers carry out Audi MOTs every week, and if a fault shows up we can find and fix it in the same visit.

Manufacturer Schedule
Audi Servicing
Many faults can be prevented with the right maintenance. We service Audis to the manufacturer's schedule using the correct oil and quality parts, and update your digital service record.

Dealer-Level Fixes
Audi Repairs
When our fault finding pinpoints the problem, our technicians repair it to main dealer standard, from water pumps and sensors to S tronic gearboxes, air suspension and complex electrical faults.
Ready to book your Audi diagnostic check?
Book online or call our German Car Specialists on 01903 830303 and we'll get to the bottom of what's wrong with your Audi.
Collection & Delivery
If your Audi isn't safe to drive, we can collect it, bring it to our workshop and deliver it back to you once the fault has been found and fixed.
Hire Cars Available
Need to stay on the road? Ask about a hire car while we find and fix the fault on your Audi.
Wait in Comfort
Relax in our waiting area with free Wi-Fi and a hot drink while we carry out initial fault finding checks.

Frequently Asked Questions
Audi Fault Finding FAQs
How much does Audi fault finding cost?
We start with an initial fault finding check at a fixed price, which we'll confirm when you book. If the fault needs more time to track down, we'll always ask you first.
How long does Audi fault finding take?
Many faults can be found within an hour or two, and you're welcome to wait. Some take longer to track down, so we'll keep you updated, and a hire car is available if you need one.
Can I drive my Audi with the engine warning light on?
If the light is steady and the car feels normal, you can usually drive gently, but book it in soon. If it's flashing or the car has lost power, stop as soon as it's safe and give us a call.
Why is the engine management light on in my Audi?
There are lots of possible causes, from a simple sensor fault to something more serious. The only way to know for sure is proper fault finding, so book your Audi in and we'll find the cause.
What does the EPC light mean on my Audi?
The EPC light means your Audi has spotted a fault that can affect engine power, so the car may feel sluggish. Book in soon and we'll find out what's causing it.
My Audi has gone into limp mode or lost power. What should I do?
Limp mode is your Audi protecting itself after spotting a fault, so it cuts power. Drive gently and only as far as you need to, then book it in and we'll find the cause.
Why is the gear indicator flashing on my Audi?
This usually means your automatic gearbox has spotted a fault and gone into a safe mode. Don't ignore it. Book your Audi in and we'll find out what's wrong.
What does the AdBlue warning mean on my Audi?
If the warning goes away after topping up, there's nothing to worry about. If it stays on or starts counting down the miles, there's a fault and the car may not restart once it reaches zero, so book in and we'll find the cause.
My Audi's air suspension has dropped. What's wrong?
If your Audi is sitting lower than usual, there's likely a leak or fault in the air suspension. It's safest not to drive it far, so give us a call and we'll advise on the next steps.
My Audi has an intermittent fault. Can you still find it?
Yes. Faults that come and go can be tricky, but your Audi keeps a record of them even after the light goes out. Book in and we'll track it down, and we'll talk you through the options if it needs more time.
Do I need to go to the main dealer for software updates or coding?
No. We can carry out software updates, coding and programming on Audis here, so your car can be diagnosed, repaired and coded in one place.
