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⚠️ : Disconnecting the battery does not clear most SmartCraft codes. They require a diagnostic tool or VesselView to delete.
| Fault Code | Description | Typical Cause / Action | | :--- | :--- | :--- | | | Fuel Pressure Sensor | Pressure out of range. Indicates failing low-pressure fuel pump or clogged fuel filter. | | Code 12 | Manifold Absolute Pressure (MAP) | Vacuum leak or faulty sensor. Engine will run rich or lean. | | Code 13 | Oxygen (O2) Sensor | (Common on later 4-stroke models) Sensor not switching. Indicates lean/rich condition or bad sensor. | | Code 14 | Intake Air Temperature (IAT) | Open or short. Engine may idle rough due to incorrect fuel trimming. | | Code 15 | High Fuel Pressure | Faulty high-pressure pump (Verado) or regulator issue. | mercury smartcraft fault codes list
Return to port immediately; check alternator and battery connections. Low Battery Voltage : Voltage dropped below critical levels. ⚠️ : Disconnecting the battery does not clear