Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
If no fault is detected in the leak diagnostic unit, the control module runs a leak diagnostic of the fuel tank system. If the control module detects a leakage that is 1 mm or larger after refueling, the control module interprets this as the fuel tank filler cap missing or loosely installed. Diagnostic trouble code (DTC) ECM-4338 is then stored. For more information about the leak diagnostics, see Leak diagnostics (certain markets only) Leak Diagnostics (Certain Markets Only).

Substitute value
None.

Possible source

Fuel tank filler cap missing:
- Fuel tank filler cap missing or not tightened
- Leakage that is 1 mm or greater in the fuel tank, fuel filler pipe, fuel tank filler cap, evaporative emission system (EVAP) canister, EVAP canister purge valve, or in the hoses between these components
- The fuel gauge does not function (This fault is detected by the rear electrical module).

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