DTC EFI-612

6-1-2 FUEL TANK SYSTEM, SMALL LEAK

Trouble Code Conditions
- The EVAP canister shut-off valve is closed, the canister purge (CP) valve is pulsed. When a specific vacuum has been achieved the canister purge valve is closed. The vacuum in the fuel tank is allowed to stabilize. If it drops too much in a set period diagnostic trouble code (DTC) EFI-612 Fuel tank system, small leak is stored.

Substitute value(s)
- None.

Possible source(s)
- Leaking fuel tank, filler pipe, fuel tank filler cap, EVAP canister, EVAP canister shut-off valve or lines between these components.
- Defective fuel tank pressure sensor.

Fault symptom(s)
- None.