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Car Diagnostics in Vantaa
Correct diagnosis is half the cure
One engine warning light usually means one fault code — proper diagnosis always saves money on needless replacements.
Diagnostics price list:
- Fault finding and code reading – 45 €
- Extended diagnostic test (measurements + sensor tests) – 90 €
- Brand-specific diagnostics (BMW, VAG, Mercedes) – from €90
- Post-diagnosis report – free of charge
- Fault code clearing after testing – included
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Vehicle diagnostics
Price includes fault finding and written report. Repairs are always quoted separately with the customer.
from45 €
When diagnostics are worthwhile
When an engine, ABS, air-conditioning or other warning light appears on the dashboard, the car has stored one or more fault codes. Reading the code alone doesn't always reveal what's broken — it tells you in which sensor or circuit the problem lies. Professional-level diagnostics combines codes, live sensor values and test sequences that pinpoint the fault to the correct component. Diagnostics are also recommended when the car behaves oddly with no warning light: fuel consumption has risen noticeably, acceleration has dropped off, the gearbox jerks, or the engine idles unevenly. In these situations the car may have entered a different operating mode (limp mode) without the driver noticing — fault codes reveal this quickly. Pre-MOT diagnostics are becoming standard — if a code is present on OBD, the MOT is halted before the measurements start. A pre-check avoids a wasted trip to the MOT station and saves the re-test fee.
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Why does the same warning light keep coming back?
A recurring warning light means the underlying root cause hasn't yet been found. Simply clearing codes without fixing the cause tends to bring the light back very quickly — sometimes on the very next start. Common reasons for this include: the fault being in a component other than the primary code suggests (for example a lambda sensor code caused by a combustion fault), a poor-quality replacement part that has been giving wrong values from the start, or a completely unrelated electrical fault such as worn connectors or intermittent shorts in the wiring loom. Finding these requires exactly the kind of thorough diagnostics where sensors are tested with an oscilloscope and connector condition is checked — a surface-level code read is not enough.
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Related repair services
Technically adjacent repairs and maintenance for the same vehicle system.
Diagnostic Code Reading
from from €35
Reading fault codes from your car's control units via the OBD port. Quickly identifies what's behind the warning light.
Engine Replacement
from 1120 €
Replacing a faulty engine with a new or reconditioned unit. Comprehensive work with warranty.
Oil Change
from 80 €
Changing engine oil and oil filter. Always the correct oil for your vehicle's make and model.
Timing Belt Replacement
from 300 €
Replacing timing belt, tensioner pulley and water pump. Prevents costly engine damage.
Timing Chain Replacement
from 995 €
Replacing the timing chain, sprockets, and tensioners. Prevents serious engine damage.
Head Gasket Replacement
from 1059 €
Replacing a worn or leaking head gasket. Prevents coolant mixing with engine oil.
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We handle all car repair work. Request a free cost estimate by phone or by booking an appointment online.
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