GJ Motors Your Local Vehicle Engine Diagnostic Test Centre In SE16 2LS
Quality Parts -Competitive Prices - All Work Guaranteed
Serving Surrey Quays, Rotherhithe, Bermondsey, Southwark, Deptford and South East London
We don't like being beaten on price but we do like giving a professional service.
Tel: 0207 231 8861
Mobile: 07720606274
G J Motors – Vehicle Diagnostic & Fault Finding Service in South East London
Dashboard Warning Light or Error Code?
Don’t ignore it — give G J Motors a call today!
Our experienced mechanics use the latest state-of-the-art diagnostic equipment and software to accurately identify and resolve issues within your vehicle’s ECU (Electronic Control Unit) and onboard computer systems.
We quickly pinpoint faults to get your vehicle back on the road — efficiently, reliably, and affordably.
- Fast, reliable car diagnostics test.
- Experts in car diagnostic fault finding.
- Latest car diagnostic equipment.
- Keep your vehicle in top condition.
Serving customers in SE16 2LS, Surrey Quays, Rotherhithe, Bermondsey, Deptford and South East London
From Only £49.99
About Our Diagnostic Vehicle Test
At G J Motors, our vehicle diagnostic test is designed to keep your car running smoothly, safely, and efficiently.
Using the latest diagnostic equipment and software, our experienced technicians can access and read error codes directly from your vehicle’s ECU (Engine Control Unit) and onboard computer. This allows us to quickly identify faults and pinpoint exactly what’s causing the issues you’re experiencing.
We can detect and diagnose problems related to:
- Engine performance
- Faulty sensors
- Braking systems
- Airbags and safety systems
- Transmission
- Electrical components
- Other critical systems
Once the problem is identified, we’ll provide you with a detailed diagnostic report and clearly explain the issue, along with any recommended repairs.
If replacement parts or further work are required, we’ll give you a no-obligation quote for both parts and labour — and we won’t carry out any repairs without your approval.
Is Your Engine Check Light comes on or Flashing on you Dash Board
The check engine light—a yellow engine symbol on your dashboard—can appear as a dull amber or bright orange light. This critical warning means your engine has detected a problem.
At G J Motors in Plough Way, South East London, we regularly diagnose and fix these issues, we strongly advise you to visit a local garage as soon as possible if this light comes on.
Note: this is also an MOT failure.
Important:
If your check engine light is flashing, pull over safely, turn off your engine, and have your vehicle towed to avoid serious damage and costly repairs.
A flashing light often indicates a cylinder misfire, where unburned fuel can overheat and damage the catalytic converter or other expensive parts.
Our Services:
Located in SE16 2LS, Surrey Quays, South East London, G J Motors offers comprehensive diagnostic services. We will:
- Diagnose your engine’s issue and provide a detailed report.
- Explain any repairs needed.
- Provide a no-obligation quote for parts and labour.
- Only proceed with repairs once you’ve given us the go-ahead.
Drive safely and don’t ignore your check engine light—bring your vehicle to G J Motors for trusted care.
Understanding Your Car Dashboard Warning Lights and Symbols
Every vehicle is slightly different, and the symbols that appear on your dashboard can vary depending on the make and model. It’s normal for some lights to briefly appear when you start your vehicle — as long as they turn off shortly after, everything is usually fine.
Some lights are simply informational, such as letting you know your car headlights are on. Others serve as warnings that require your attention.
If you're ever unsure about a warning light on your dashboard, check your owner’s manual for guidance — or feel free to pop in if you're passing by, or just give us a call. We're always happy to help.
Dashboard Light Colour Guide
🔵🟢 Green or Blue Lights
These lights indicate that a system is active or operating as expected — for example, headlights or cruise control.
No action needed.
🟠🟡 Orange or Yellow Lights
These are warning lights that signal something needs attention soon — such as a scheduled service, low tyre pressure, or engine check light.
Action is required, but not usually urgent.
🔴 Red or Flashing Lights
A red or flashing light usually signals a serious or potentially dangerous issue, such as low oil pressure or brake failure.
You should pull over and stop the vehicle as soon as it is safe to do so. Call for assistance or have the vehicle towed to avoid further damage.
Not Sure What a Light Means?
Let G J Motors take a look — we can quickly diagnose dashboard warnings using the latest tools and get you back on the road with confidence.
What a Vehicle Diagnostic Test Can Reveal:
🚗 Engine Problems
- Engine misfires, rough idling, or poor fuel economy
- Problems with ignition coils, spark plugs, fuel injectors, or timing.
⚙️ Transmission Issues
- Slipping gears or delayed shifting
- Low or dirty transmission fluid
- Sensor issues affecting transmission performance
📉 Sensor Failures
- Oxygen sensor (O2), mass airflow sensor (MAF), throttle position sensor (TPS), etc.
- These affect engine performance, fuel efficiency, and emissions
🛑 Braking System Faults
- ABS (Anti-lock Braking System) errors
- Worn brake pads or faulty brake fluid pressure
- Hydraulic system issues
🎈 Airbag / SRS (Safety Restraint System) Problems
- Readiness of airbag deployment
- Malfunctions in seatbelt pretensioners or crash sensors
🔋 Electrical System Faults
- Weak battery, faulty alternator, or corroded wiring
- Power loss to lights, power windows, infotainment, etc.
🌫️ Exhaust & Emissions Issues
- Catalytic converter performance
- Emissions control system problems
- Check Engine Light (CEL) often triggered by emissions faults
⛽ Fuel System Errors
- Fuel pump or fuel pressure problems
- Dirty or clogged fuel injectors
- Fuel system leaks
🌡️ Cooling System Warnings
- Engine overheating risks
- Faulty radiator, thermostat, or coolant temperature sensors
Why Does a Diagnostic Check Matter
A diagnostic check helps detect issues early, often before they become serious or costly, and ensures your vehicle is safe, efficient, and roadworthy. It’s especially useful when:
- The Check Engine Light is on
- You're buying a used car
- Your car is behaving unusually (stalling, jerking, etc.)
- You're due for a maintenance check-up
Schedule an appointment
Whether your car needs a Diagnostic Vehicle Test a regular check-up or a major repair, we're here for you. Make an appointment with us today and experience the difference our professional service can make for your vehicle.
Save up to 60% off main dealer prices.
Local servicing and Diagnostic test on all major makes, helping customers who need a diagnostic service in SE16 2LS and Surrey Quays, Rotherhithe, Bermondsey, Deptford, New Cross, Greenwich, South East London and surrounding area for over 30 years.
Book Your Diagnostic Vehicle Test Online with G J Motors
Please fill in the details on our form, and we’ll get back to you as soon as possible.
Don’t forget to include your car’s registration number — this allows us to identify the make, model, and engine size of your vehicle. With this information, we can provide an accurate quote, schedule your appointment, or offer the advice you're looking for.
Expert Diagnostics for any Make or Model—Request Your quote Now!
Telephone:: 0207 231 8861
Mobile: 07720606274
E-mail: gjmotors1@hotmail.com
GJ Motors Customer Reviews
Charles
Local Guide Level 3
Had my MOT done here last 2 years, Greg is very friendly and has great service.
Done within an hour and great price, highly recommend.
Mario Ruiz
Fernandez
They are always the best, quickest and efficient combined with reasonable prices, you can’t ask for more.
I have been using them for years and every time worth every penny.
Linda Kemp
Local Guide Level 4
Greg has been servicing and maintaining our cars for quite a few years now. Always fair on price and very helpful with advice. Never feel that he's trying to get more work than necessary. Always treats me with respect. Would highly recommend.
See what our satisfied customers are saying about us
if your happy with our service please leave us a review, you can also read what our satisfied customers have to say clicking on the link below.
GJ Motors
Telephone:: 0207 231 8861
Mobile: 07720606274
WhatsApp
Email: Gjmotors
Address:
17 Plough Way,
Surrey Quays
London,
SE16 2LS
Quality servicing at affordable prices
- Friendly service.
- Affordable prices.
- over 34 years experience.
- All work guaranteed for parts and labour.
GJ Motors is a local garage that has built a reputation for trust with its local customers who are returning to us time and time again for all their Vehicle servicing needs.