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Home >> Volvo >> 2000 >> S80 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 7 Of 11 >> ECM-431D: Leak Diagnostic Unit. Signal Missing (B6294S2; B6294T; 2002) >> Signal missing >> Leakage >> Intermittent fault

Intermittent fault

The control module has previously detected a leak in the tank system but the fault is no longer active. The fault may be due to leakage in the fuel tank, fuel filler pipe, fuel tank filler cap, evaporative emission system (EVAP) canister, EVAP canister purge valve, leak diagnostic unit or in the hoses between these components.

Other information: 

Carry out the quick test of the fuel tank system.