Diagnostic trouble code (DTC) information

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Condition

Fig 1: Identifying EVAP Canister Shut-Off Valve

Courtesy of VOLVO CARS OF NORTH AMERICA.

The EVAP canister shut-off valve is open and the fuel tank system is vented. The canister purge (CP) valve is pulsed and because of the vacuum in the intake manifold the engine starts to suck air through the EVAP canister.

Because the EVAP canister shut-off valve is open the pressure in the fuel tank will start to drop slowly, if the pressure in the fuel tank drops too rapidly diagnostic trouble code (DTC) EFI-614 (EVAP canister shut-off valve, flow fault) is stored.

Substitute Value

None.

Possible Source

Blocked/sticking EVAP canister shut-off valve.
Blocked EVAP canister shut-off valve filter.
Blocked hose between EVAP canister and EVAP canister shut-off valve.
Blocked hose between EVAP canister shut-off valve and filter.
Blocked EVAP canister shut-off valve hose connector on EVAP canister
Leaking canister purge (CP) valve.
The fuel tank pressure sensor transmits a steady signal lower than -1000 Pa (-0.14 psi).

Fault symptom[s]

None.