Diagnostic Fault-Code Scan
Request a QuoteReading stored fault codes from your vehicle's systems as a starting point for finding the problem.
Vehicle Diagnostics & Fault Finding in Leicester
Modern vehicles have many electronic systems, and a warning light or running problem can have several possible causes. Our aim is to find the cause and explain it clearly.
Reading fault codes is a useful starting point, but a code doesn't always identify the underlying fault. Finding the cause may need further testing, and we'll agree any diagnostic time and repairs with you before going ahead.
Diagnostic services
Engine Management Light Diagnosis
Request a QuoteInvestigating why your engine warning light is on, beyond just reading the code.
Vehicle Warning Light Diagnosis
Request a QuoteLooking into other dashboard warnings and what they mean for your vehicle.
Pre-Purchase Diagnostic Inspection
Request a QuoteChecking a used vehicle before you buy, including stored fault codes and a general inspection.
Engine Performance Diagnosis
Request a QuoteInvestigating misfires, rough running, hesitation, loss of power or poor fuel economy.
Cooling System Diagnosis
Request a QuoteFinding the cause of overheating, coolant loss or heater problems, including leaks, water pump and thermostat issues.
Starting & Charging Diagnosis
Request a QuoteTesting why a vehicle won't start or the battery keeps going flat, including the battery, starter and alternator.
Fuel System Diagnosis
Request a QuoteInvestigating fuel delivery problems that cause poor running, difficult starting or stalling.
Transmission & Gearbox Diagnosis
Request a QuoteLooking into difficult gear changes, slipping, noises or transmission warning lights.
Electrical Fault Diagnosis
Request a QuoteTracing faults with lights, windows, central locking and other electrical systems.
Battery Drain / Parasitic Draw Diagnosis
Request a QuoteFinding what's draining your battery when the vehicle is parked.
Sensor & Actuator Testing
Request a QuoteTesting individual sensors and components to confirm whether they're working correctly.
ABS & Electronic Brake Diagnosis
Request a QuoteInvestigating ABS, traction control and electronic parking brake warnings.
Airbag / SRS Diagnosis
Request a QuoteInvestigating airbag and SRS warning lights. We'll explain what we find and the next steps.
Intermittent Fault Investigation
Request a QuoteInvestigating faults that come and go, which can take more time to reproduce and pin down.
Diagnosis time and any repairs are always agreed with you first. If a fault needs work we're unable to carry out, we'll tell you.
Repair quotes are free and no-obligation. Every vehicle is different, so we quote individually: your quote depends on your vehicle, the parts needed, labour and, where relevant, diagnosis. We won't carry out additional chargeable work without your approval.
Common signs to look out for
- An engine management or other warning light
- Rough running, misfiring or loss of power
- Difficulty starting, or a battery that keeps going flat
- Overheating, or coolant that keeps needing topping up
- Electrical items working intermittently or not at all
- Jerky or difficult gear changes
- A fault that comes and goes
Why it matters
Accurate diagnosis helps you avoid replacing parts that don't need replacing. Knowing the actual cause means you can make an informed decision about repairs.
Not sure what's causing the problem? You don't need to be. Choose Vehicle Diagnostics when you book, tell us what you've noticed, and we'll take it from there.
Complimentary 50-Point Vehicle Health Check
Every CARBE workshop service includes a complimentary 50-point health check. We look over your vehicle's key systems and give you a clear report, so you know what's in good shape and what may need attention.
Green: goodAmber: may need attentionRed: needs attentionNot checked
Your report rates each area green (good), amber (may need attention soon) or red (needs attention), with our findings and recommended actions. Anything we couldn't check is clearly marked as not checked.
What we look at
- Engine and engine bay
- Cooling system
- Braking system
- Suspension and steering
- Tyres and wheels
- Battery and electrical systems
- Transmission and drivetrain
- Exhaust and underbody
- Interior and safety equipment
- Service and maintenance condition
The health check is a general visual and functional assessment. It isn't an MOT, a full diagnosis or a guarantee of your vehicle's condition, and it doesn't include dismantling, diagnostic scans or specialist testing. Any work we recommend is only carried out with your approval.
Frequently asked questions
What is vehicle diagnostics?
Vehicle diagnostics involves investigating faults using electronic information, testing equipment, inspections and mechanical knowledge. A diagnostic assessment helps identify the likely cause of a problem before repairs are recommended.
What's the difference between a fault scan and diagnosis?
A fault scan retrieves stored diagnostic information. A proper diagnostic assessment interprets that information and may include live data checks, electrical measurements, component tests or mechanical inspection.
Will diagnostics tell me exactly which part needs replacing?
Not always. Fault codes identify detected problems or affected systems, but don't necessarily identify a defective component. Further testing may be needed to establish the root cause.
Do you offer engine management light diagnostics?
Yes. CARBE can investigate engine management warning lights using suitable diagnostic equipment and further checks where necessary. Our aim is to understand the underlying problem rather than simply clear the warning.
Why does my warning light return after being reset?
Clearing a fault code does not necessarily repair the cause. If the problem remains, the vehicle may detect it again and reactivate the warning light.
How long does diagnostic testing take?
An initial diagnostic assessment commonly takes around 30–90 minutes. Complex or intermittent problems may require further testing. We'll explain when additional investigation is necessary and discuss any extra charges.
Are diagnostic assessments chargeable?
Diagnostic assessments may carry a charge because they involve technician time, testing and equipment. We'll explain the applicable cost before starting chargeable diagnostic work.
What should I do if a red warning light appears?
A red warning light can indicate an urgent safety or mechanical issue. Stop in a safe location as soon as possible, consult the vehicle handbook and seek assistance. Do not continue driving if the warning indicates oil pressure, overheating or braking danger.
Need help with vehicle diagnostics?
Book an appointment or request a free, no-obligation quote. You don't need to know exactly what's wrong.