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.
Tank System, Test Result = "Major Leakage Found"
Diagnostic trouble code limit:Tank pressure lower than 1500 Pa after 450 seconds in test phase "Major leakage".
- Check that the tank cap is properly fitted and that its seal is undamaged.
- Check the hoses and connections on the leak diagnostic unit, the canister, EVAP-valve and the fuel filler pipe visually. Check for damage or incorrect/loose installation.
- Remedy as necessary.
- Restart the test.NOTE:
Problems caused by a loose tank cap or loose hose connections may be difficult to find. If no leakage was found in the quick-test of the tank system after completed checks and actions according to the above, the problem has likely been repaired.
- Continue
Refer to PERFORM QUICK-TEST TANK SYSTEM
NO RELATED
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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.