Mobile Vehicle Diagnostics Explained
Modern vehicles do not break down without notice. They alert you.
Dashboard lamps light up. Fault codes appear. Power drops, the car enters limp home mode. The difficulty?
Many drivers and fleet managers have to guess what those alerts mean and guessing costs money.
That is why Fault Fixer was created.
Mobile Vehicle Diagnostics Explained
What Is Mobile Vehicle Diagnostics?
Mobile vehicle diagnostics is the professional scanning, analysis and interpretation of fault data at the customer’s location, no garage or dealership visit is required. Fault Fixer transports dealer grade diagnostic tools to:
• Private homes
• Commercial premises
• Depots
• Roadside sites
Many people believe that a dashboard lamp names the fault. It does not.
A lamp only signals that a system has recorded a value outside the normal range, it does not reveal the underlying cause. The same engine lamp might indicate
• A £40 sensor
• A wiring defect
• A software calibration issue
• Or a major internal failure
Without diagnostics, you gamble and gambling leads to pointless part replacements, repeated workshop trips, long periods off the road, and higher bills. Diagnostics ends the gamble.
Warning Lights Are Not Diagnoses
Fault Fixer is not a repair workshop by design. Our task is to Identify faults, not sell extra work. We explain results, not hide behind jargon. We offer advice, not pressure.
Our report may be used with your regular garage, a main dealer, a fleet maintenance contractor, or simply to decide whether any action is required at all
Each customer receives
• A full professional scan of fault codes
• A system-by-system review (engine, emissions, fuel, electrics, etc.)
• Explanations in everyday language
• A clear diagnostic report
• Impartial guidance on what to do next
Why Businesses and Fleets Use Fault Fixer
For businesses, vehicle issues aren’t just mechanical, they’re operational. Downtime means missed jobs, delayed deliveries, idle staff and lost revenue. Fleet managers and business owners use Fault Fixer to:
• Quickly identify whether a vehicle is safe to stay in service
• Prioritise repairs based on risk, not panic
• Avoid unnecessary vehicle off-road time
• Make informed repair vs replace decisions
• Reduce repeat diagnostic costs
In many cases, accurate diagnostics alone prevents unnecessary downtime.
When Should You Book Diagnostics?
Fault Fixer is commonly used when:
• A warning light appears
• A vehicle enters limp mode
• A garage can’t clearly explain a fault
• You’ve been quoted a large repair with uncertainty
• You want a second opinion before authorising work
• A fleet vehicle needs fast triage
If you’re asking “Do we really need to fix this now?” Diagnostics is the answer.
Rather than replace parts “to see if it fixes it”, we establish
• The exact fault
• The reason it occurred
• How soon it needs attention
• Which repair choices are practical
Information comes first – decisions follow.
The Bigger Picture: Why Diagnostics Comes First
Modern vehicles are data-driven machines. Trying to fix them without reading and understanding that data is like repairing a laptop without turning it on. Fault Fixer’s mission is simple: give drivers and businesses clarity before cost.
Because better information leads to:
• Better decisions
• Lower costs
• Less downtime
• More trust
And in today’s automotive world, that matters more than ever.
Book an inspection and report now:
available same-day or next-day
Booking request form
To book your inspection please call us on 0333 366 0155, or complete the form below