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.
Test Phases, Quick Test Fuel Tank System: Reference
Reference phase for leakage, and operating check of the leak diagnostic unit (DMTL), is in progress.
If no fault is detected during this phase, the check for major leakage starts.
If a fault is detected during this phase the test is stopped and the parameter "DMTL, test status" shows "Fault Found". The diagnostic trouble code (DTC) for the detect fault is stored in the Engine control module (ECM).
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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.