Results for “Reservoir / expansion tank”
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OBD-II codes3
P0442 — Evaporative Emission Control System Leak Detected (Small Leak)
The EVAP monitor detected a small-leak or sealing condition. The code does not identify the physical leak location or prove which component failed.
Generic codeP0456 — Evaporative Emissions System Small Leak Detected
The EVAP monitor detected a very small leak or inability to maintain the expected seal. The code does not identify the leak location or prove a specific valve, cap, hose, or canister failed.
Generic codeP0455 — Evaporative Emission System Leak Detected (Gross Leak)
The EVAP monitor detected a large-leak or inability-to-seal condition. It does not identify where the leak or control fault is located.
Generic codeSystems2
Cooling system
The cooling system moves heat away from the engine and releases it through controlled coolant flow and airflow. Overheating demands immediate safety judgment before diagnosis.
System guideFuel system
The fuel system stores and meters fuel under controlled conditions. A no-start, lean code, odor, or hesitation can involve supply, command, air measurement, electrical control, mechanical condition, or vapor management.
System guideDid this search get you to the right information?
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