- 01252622200
- Mon - Sat 08:00 – 18:00
- 31 Sandy lane, Church Crookham Fleet, Hampshire, GU52 8BX
Modern vehicles are complex, with onboard computers (ECUs) monitoring hundreds of components. When a fault occurs, it triggers a warning light. Simply turning the light off doesn’t fix the problem.
At TJ Services Fleet in Aldershot, we plug directly into your vehicle’s brain. Our advanced engine diagnostic service involves more than just reading a code; we interpret the data, perform further tests, and provide a complete health check of your engine and its related systems. This ensures we recommend the right repair the first time, every time.
Don’t ignore the warning signs. An early diagnostic check can prevent minor issues from becoming costly, catastrophic failures. Book an inspection if you notice:
We follow a thorough, data-led process to ensure complete accuracy.
An engine diagnostic scan is a process where we plug a specialised computer into your vehicle’s onboard computer (ECU). This allows us to read the fault codes and live data your car has stored, which act as clues to identify issues with your engine, transmission, brakes, and other systems.
The check engine light is a general warning that your vehicle’s ECU has detected a fault. The issue could be something simple like a loose fuel cap, or something more serious like a faulty sensor or a misfiring engine. A diagnostic scan is the only way to know for sure.
Not always. A fault code tells our technicians which system is experiencing a problem (e.g., an oxygen sensor circuit fault), but it doesn’t automatically mean the sensor itself has failed. The code is the crucial first step that guides our expert diagnosis, which may include further testing to pinpoint the exact faulty component. This process prevents you from paying for parts you don’t need.
We charge a fixed fee for the initial diagnostic scan. This fee covers our technician’s time and the use of our advanced, dealer-level diagnostic equipment to accurately retrieve and interpret the fault codes. We will always inform you of this cost upfront.
The initial scan and data analysis typically take around 60-90 minutes. If the fault is complex and requires more in-depth testing, we will advise you on any extra time needed.
Yes, absolutely. Once we’ve accurately diagnosed the fault, we will provide you with a clear, no-obligation quote for the required repairs. No work will ever be carried out without your full approval.
