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.

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.