The SPN 164 FMI 4 fault code is a diesel engine diagnostic trouble code indicating that the rail pressure sensor circuit has failed low. This means the Engine Control Module (ECM) is detecting a lower than expected voltage signal from the rail pressure sensor, which is crucial for monitoring the fuel pressure within the common rail system.What SPN 164 FMI 4 MeansThe SPN 164 FMI 4 fault code specif
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The SPN 164 FMI 3 fault code indicates a 'Rail Pressure Sensor Circuit Failed High' condition in a diesel engine. This diagnostic trouble code suggests that the Engine Control Module (ECM) has detected a higher than expected voltage signal from the rail pressure sensor, which is critical for monitoring the fuel rail pressure in the fuel system.What SPN 164 FMI 3 MeansThe SPN 164 FMI 3 fault code i
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The SPN 164 FMI 2 fault code is a diesel engine diagnostic trouble code indicating that the rail pressure fuel trim is at its lower limit. This means the Engine Control Module (ECM) has detected that the fuel rail pressure is below the expected threshold, which can affect engine performance and efficiency.What SPN 164 FMI 2 MeansSPN 164 FMI 2 refers to a condition where the fuel rail pressure is l
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The SPN 158 FMI 2 fault code is a diesel engine diagnostic trouble code indicating an 'Ignition Switch Not Plausible' condition. This code suggests that the Engine Control Module (ECM) is receiving an inconsistent or unexpected signal from the ignition switch, which could affect the truck's starting and electrical systems.What SPN 158 FMI 2 MeansWhen the SPN 158 FMI 2 fault code is active, it mean
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The SPN 158 FMI 2 fault code indicates a mismatch between the KL15 ignition switch status as reported by the CPC (Common Powertrain Controller) and the MCM (Motor Control Module). This diesel engine fault code suggests that the ignition signal being received by these two modules is inconsistent, which can lead to operational issues.What SPN 158 FMI 2 MeansSPN 158 FMI 2 represents a discrepancy in
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The SPN 157 FMI 18 fault code is a diesel engine diagnostic trouble code indicating that the fuel rail pressure is too high. This code is triggered when the Engine Control Module (ECM) detects that the actual fuel pressure in the rail exceeds the expected value. The ECM relies on the fuel pressure sensor to monitor this parameter, and any deviation from the norm can result in this fault code being
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The SPN 157 FMI 17 fault code indicates that the diesel engine's electronic control module (ECM) has detected that the minimum rail pressure required for fuel injection has not been achieved. This diagnostic trouble code is critical for maintaining proper engine performance and efficiency, as it involves the high-pressure fuel rail system responsible for delivering fuel to the injectors.What SPN 1
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The SPN 157 FMI 16 fault code is a diagnostic trouble code that indicates the fuel rail pressure is too low in a diesel engine. This code is triggered when the Engine Control Module (ECM) detects that the actual fuel rail pressure is below the desired threshold, which can affect engine performance and efficiency.
What SPN 157 FMI 16 Means
The SPN 157 FMI 16 fault code specifically relates to the
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The SPN 157 FMI 15 fault code indicates that the fuel rail pressure is too low in the low-pressure circuit of a diesel engine. This diagnostic trouble code is triggered when the Engine Control Module (ECM) detects that the fuel pressure is below the expected threshold, which can affect engine performance and efficiency.What SPN 157 FMI 15 MeansThe SPN 157 FMI 15 fault code is related to the fuel s
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The SPN 157 FMI 10 fault code indicates an undercapacity condition in the high-pressure fuel circuit of a diesel engine. This diagnostic trouble code is triggered when the Engine Control Module (ECM) detects that the fuel pressure in the high-pressure circuit is below the expected threshold, which can affect engine performance and efficiency.What SPN 157 FMI 10 MeansSPN 157 FMI 10 is a diesel engi
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