Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




The control module performs a function test of the leak diagnostic system. Diagnostic trouble code (DTC) ECM-66 is stored if the movement of the membrane in the leak diagnostic pump from active position to resting position is too slow. For further information about leak diagnostics, see Leak diagnostic Leak Diagnostic.

Substitute value
Leak diagnostics disabled.

Possible source
- Blocked filter between the leak diagnostic pump and the EVAP canister
- Blocked hose between the leak diagnostic pump and the EVAP canister
- Blocked hose between the EVAP canister and the fuel tank
- Defective leak diagnostic pump.

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.