Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fuel tank leakage diagnosis module: Notes
A system for leakage diagnosis is compulsory in the following countries: USA, Canada, Korea.
The tank-leak diagnosis can be used to determine the leak-tightness of the tank-ventilation system.
Tank leakage diagnosis allows a difference to be made between:
- Minor leak, greater than 1 mm
- Superfine leak, 0.5 mm to 1 mm
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.