Mercury Smartcraft Fault Codes List !!top!!

Mercury SmartCraft fault codes provide critical diagnostic information about your engine's health, ranging from minor sensor glitches to severe mechanical failures. These codes are typically displayed on your SmartCraft gauges or can be retrieved using a diagnostic scanner.

| Fault Code | Description | Typical Cause / Action | | :--- | :--- | :--- | | | Engine Temperature Sensor Fault | Open or short circuit in the temperature sensor. Check wiring harness for corrosion or breaks. | | Code 2 | Throttle Position Sensor (TPS) Fault | Signal out of range. Often caused by a faulty TPS or loose connection at the throttle body. | | Code 3 | Oil Level Sensor Fault | Detected low oil or sensor failure. Check oil tank level; if full, inspect sensor float for sticking. | | Code 4 | Exhaust Gas Temperature (EGT) Sensor | High exhaust temp or sensor failure. Common in Verado models. Check for cooling blockages. | | Code 5 | Barometric Pressure Sensor | Sensor internal to ECU (or external on older models) providing inaccurate data. Can cause rough running at altitude. | | Code 6 | Crankshaft Position Sensor | No signal detected. Engine may crank but not start. Check air gap and wiring. | | Code 7 | Camshaft Position Sensor | Sync signal error. Usually results in a no-start condition or limp mode. | | Code 8 | Knock Sensor Fault | Open or short circuit. Can result in the ECU retarding timing unnecessarily (power loss). | mercury smartcraft fault codes list