Real diagnostic case studies - by our engineers

Fixing the faults behind OBD codes

Explore examples of vehicle electronic diagnostics carried out with our EOBD Facile diagnostic software.

See what the software can do in practice and follow the steps needed to complete your repairs.

The same method, every time

Avoid replacing parts unnecessarily.

  1. Read the code Connect the scanner and record the exact code, along with the engine data captured when the fault occurred.
  2. Understand the component Find out how the sensor or component works and where it is located on that specific engine.
  3. Test before replacing A multimeter is often enough to confirm or rule out a suspected component.
  4. Check the repair Clear the code, complete a drive cycle and scan again to check that the fault has not returned.
Real cases
By our engineers
Clearly explained
Repair checked

Fault diagnosis and repair tutorials

Select a tutorial to open the corresponding fault code case study. These studies were carried out by our engineers. More diagnostic examples will be available soon.

Code not listed? Look up its definition

A fault code is a starting point, not a final diagnosis. The same code may be caused by a sensor, its wiring or another component upstream. These case studies show why, with measurements to support the diagnosis.

Car trouble? Our scanner can help you solve it.

klavkarr reads and explains your fault codes, then clears them after repair, just as in these case studies. Designed in France, with no subscription and a 2-year warranty.

klavkarr 310

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Understand the codes before taking anything apart.