The SPN 168 FMI 9 fault code is a diesel engine diagnostic trouble code indicating a loss of the main battery connection. This code is triggered when the Engine Control Module (ECM) detects an interruption in the battery's electrical circuit, which can affect the truck's electrical system and overall performance.What SPN 168 FMI 9 MeansThe SPN 168 FMI 9 fault code signifies that the ECM has lost c
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The SPN 168 FMI 7 fault code indicates an issue with the charging system or battery failure detected during Opt Idle conditions. This diesel engine fault code is triggered when the Engine Control Module (ECM) senses that the charging system is not maintaining the required voltage levels, potentially due to a malfunctioning alternator, battery, or related components.What SPN 168 FMI 7 MeansThe SPN
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The SPN 110 FMI 18 fault code indicates a problem with the engine cooling system, specifically that the coolant is heating up too slowly compared to the modeled coolant temperature. This diesel engine fault code suggests that the ECM has detected a discrepancy between the expected and actual coolant temperatures, often pointing to a mechanical issue with the thermostat or related components.What S
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The SPN 110 FMI 16 fault code is a diesel engine diagnostic trouble code indicating that the engine's coolant temperature is higher than the expected range. This code is triggered when the Engine Control Module (ECM) detects a coolant temperature reading that exceeds the predefined threshold, suggesting a potential issue with the engine's cooling system.What SPN 110 FMI 16 MeansThe SPN 110 FMI 16
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The SPN 110 FMI 4 fault code is a diesel engine diagnostic trouble code indicating that the engine coolant outlet temperature circuit has failed low. This means the Engine Control Module (ECM) is detecting a lower than expected voltage signal from the Engine Coolant Temperature (ECT) sensor, suggesting a potential issue with the sensor or its circuit.
What SPN 110 FMI 4 Means
When the SPN 110 FMI
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The SPN 110 FMI 3 fault code indicates that the engine control module (ECM) has detected a high voltage condition in the engine coolant outlet temperature circuit. This diesel engine fault code suggests that the signal from the coolant temperature sensor is reading higher than expected, which can affect engine performance and cooling efficiency. What SPN 110 FMI 3 Means SPN 110 FMI 3 is a diagnost
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The SPN 110 FMI 0 fault code indicates that the engine control module (ECM) has detected a very high coolant temperature. This diesel engine fault code is triggered when the coolant temperature exceeds the threshold set by the manufacturer, signaling potential issues within the engine's cooling system.What SPN 110 FMI 0 MeansThe SPN 110 FMI 0 fault code represents a condition where the coolant tem
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The SPN 108 FMI 4 fault code indicates a 'Barometric Pressure Circuit Failed Low' condition in a diesel engine. This diagnostic trouble code suggests that the Engine Control Module (ECM) is receiving a signal from the barometric pressure sensor that is lower than expected. The ECM relies on accurate barometric pressure readings to adjust fuel delivery and engine timing for optimal performance.What
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The SPN 108 FMI 3 fault code is a diesel engine diagnostic trouble code indicating that the barometric pressure circuit has failed high. This means the Engine Control Module (ECM) is detecting a higher than expected voltage signal from the barometric pressure sensor, which is crucial for accurate air management and engine performance. What SPN 108 FMI 3 Means When the SPN 108 FMI 3 fault code is a
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The SPN 168 FMI 1 fault code indicates that the battery voltage is lower than the acceptable threshold in diesel trucks. This issue can lead to various electrical problems, affecting the truck's overall performance. Understanding this code is crucial for diesel mechanics to ensure efficient troubleshooting and repair.
What This Code Means
SPN (Suspect Parameter Number) 168 with FMI (Failure Mode
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