Computer Diagnostic Scan
A computer diagnostic scan connects a scan tool to the diagnostic socket under your dashboard and asks each control module what it has recorded. It tells us where to look, not what to replace. A fault code is a clue that points to a circuit or a system, and a technician has to follow it from there.
From AED 150Written quote after diagnosis, before work startsConvenience fee applicable · shown on your written quote
- 30 to 60 minutes
- Can be done at your location
- Convenience fee applicable · shown on your written quote
- Diagnosis free with repair
Signs you need computer diagnostic scan
- Any warning light on the dashboard, steady or flashing
- The car hesitates, stalls or runs rougher than it used to
- Fuel use has crept up without a change in how you drive
- A feature has stopped working: parking sensors, electric seat, cruise control
- You are buying a used car and want to know what its computers remember
- A previous repair was done and you want to confirm nothing else is stored
What usually causes it
Sensors reporting out-of-range values
Modern cars check hundreds of readings a second. When one falls outside its expected range for long enough, the module stores a code and lights a warning lamp.
Faults that come and go
Some problems only appear when the engine is hot or the road is wet. The module remembers them even after they stop, which is why a scan can find things you cannot reproduce.
Communication faults between modules
Cars share information over a network. A weak battery or damaged wire can cause several modules to report faults at once, even though only one thing is wrong.
Clearing codes without fixing the cause
A reset may switch off a light for a day. If the cause is still there, the code returns, and the scan history helps us see that.
How we do computer diagnostic scan
- 1
Connect and identify the car
We read the VIN, check the battery voltage first, and find which modules the car carries, since a scan of the engine alone can miss faults in the gearbox, ABS or body systems.
- 2
Read stored, pending and history codes
Each module is queried. We separate active faults from old ones, and note the freeze-frame data showing the conditions when the fault occurred.
- 3
Look at live data
Where a code is ambiguous, we watch the sensor values live, comparing them with what a healthy car would show at idle and under load.
- 4
Explain the findings in plain words
You get a list of what was found, what is urgent, what can wait, and what the next test would be. We do not clear codes until you know what they were.
In Dubai, Sharjah and Ajman
Heat is hard on sensors, connectors and batteries, so the scan often turns up a pattern: a weak battery causing odd faults, or an air-flow sensor clogged with fine desert dust. For a quick scan we can come to your home or office in Dubai, Sharjah or Ajman. Fixing what the scan finds usually happens at the workshop, with pickup and delivery, and the diagnosis is free if you go ahead with the repair.
Questions about computer diagnostic scan
Does the scan tell you exactly what is broken?
Not by itself. It tells us which system recorded the problem. Confirming the faulty part usually needs a test, such as measuring a sensor or checking wiring.
Can I use a cheap code reader instead?
A basic reader shows engine codes only. It misses the gearbox, ABS, airbag and body modules and gives no live data, which is where much of the useful information is.
Will you clear the warning light?
Once we have recorded the codes and you understand them. Clearing without a fix only hides the problem for a short time.
Do I need to be there?
For an on-site scan, someone with the keys needs to be present. We will tell you what to expect when you book.
Last updated
Get a written quote
Tell us about your car. You get an itemised quote before any work starts, and you choose OEM, aftermarket or used parts.