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Home >> Volvo >> 2009 >> XC70 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control Module (ECM) - Specifications, Other >> Engine Control Module (ECM) (B6304T2/T4 2009-2012) >> Test Phases, Quick Test Fuel Tank System >> Major Leak
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Major Leak

Investigation of the fuel tank system in progress.

If no fault is detected during this phase, the check for minor leakage starts.

If leakage is detected during this phase the test is stopped and the parameter "Tank system test result" shows "Major leak found". The diagnostic trouble code (DTC) is stored in the Engine control module (ECM).