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The SPN 523 FMI 13 fault code is a diesel engine diagnostic trouble code indicating that the J1939 transmission current gear signal is missing. This code suggests a communication issue between the transmission control module (TCM) and the engine control module (ECM), where the ECM is not receiving the expected gear signal from the transmission.What SPN 523 FMI 13 MeansWhen the SPN 523 FMI 13 fault read more

The SPN 523 FMI 13 fault code indicates that the J1939 Transmission Current Gear Signal is missing or not available. This diesel engine fault code suggests that the Engine Control Module (ECM) is not receiving the necessary gear position data from the transmission control system, which can affect vehicle operation.What SPN 523 FMI 13 MeansWhen the SPN 523 FMI 13 fault code appears, it means the EC read more

The SPN 520 FMI 18 fault code is a diesel engine fault code indicating reduced engine brake power. This diagnostic trouble code suggests an issue within the engine brake system, often related to the control or actuation components. When the ECM detects a discrepancy in the expected operation of the engine brake, it triggers this code to alert the technician of a potential malfunction.What SPN 520 read more

The SPN 411 FMI 13 fault code is a diesel engine diagnostic trouble code indicating that the EGR Delta Pressure Sensor is out of calibration on the high side. This code suggests that the Engine Control Module (ECM) is detecting an abnormal pressure reading from the EGR system, which could affect engine performance and emissions.What SPN 411 FMI 13 MeansWhen the SPN 411 FMI 13 fault code appears, i read more

The SPN 411 FMI 4 fault code indicates a low circuit condition in the EGR Delta Pressure Sensor. This diesel engine fault code suggests that the ECM is detecting a lower than expected voltage signal from the EGR Delta Pressure Sensor, which is crucial for monitoring the pressure differential across the EGR valve. This diagnostic trouble code can lead to improper EGR operation, affecting engine per read more

The SPN 411 FMI 3 fault code is a diesel engine diagnostic trouble code indicating a high circuit condition in the EGR Delta Pressure Sensor. This fault suggests that the Engine Control Module (ECM) is detecting a higher than expected voltage signal from the EGR Delta Pressure Sensor, which is crucial for monitoring the pressure differential across the EGR valve.What SPN 411 FMI 3 MeansSPN 411 FMI read more

The SPN 411 FMI 2 fault code indicates that the EGR Delta Pressure Sensor is reading lower than expected, suggesting an out-of-calibration condition. This diesel engine fault code is triggered when the ECM detects a discrepancy in the pressure differential across the EGR system, which can affect engine performance and emissions.What SPN 411 FMI 2 MeansThe SPN 411 FMI 2 diagnostic trouble code is r read more

The SPN 247 FMI 14 fault code is a diesel engine fault code indicating a discrepancy between the ash mileage reported by the Aftertreatment Control Module (ACM) and the value stored in the Common Powertrain Controller (CPC). This diagnostic trouble code suggests that the ACM's reported ash accumulation mileage is lower than what the CPC has recorded, potentially pointing to issues in data synchron read more

The SPN 247 FMI 10 fault code indicates that the Motor Control Module (MCM) is detecting engine hours data increasing at an implausible rate. This diesel engine fault code suggests a discrepancy in how the ECM is interpreting engine runtime, potentially due to electrical or software issues.What SPN 247 FMI 10 MeansThe SPN 247 FMI 10 fault code is triggered when the MCM notices that the engine hour read more

The SPN 247 FMI 9 fault code indicates a communication error where the Motor Control Module (MCM) is not receiving engine hours data from the Engine Control Module (ECM). This diesel engine fault code suggests that the data transmission has either stopped or is not being received, which can affect engine monitoring and diagnostics. What SPN 247 FMI 9 Means When the SPN 247 FMI 9 fault code appears read more