The SPN 1136 FMI 4 fault code is a diesel engine diagnostic trouble code indicating that the Motor Control Module (MCM) has detected an internal injector supply voltage that is too low. This fault code suggests an issue within the electrical system that supplies voltage to the fuel injectors, which is critical for proper engine operation.What SPN 1136 FMI 4 MeansWhen the SPN 1136 FMI 4 fault code
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The SPN 1136 FMI 3 fault code is a diagnostic trouble code indicating that the Motor Control Module (MCM) has detected an internal injector supply voltage that is too high. This diesel engine fault code suggests an electrical issue within the fuel injection system, potentially affecting engine performance.
What SPN 1136 FMI 3 Means
SPN 1136 FMI 3 fault code signifies that the MCM has identified a
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The SPN 1121 FMI 19 fault code indicates an erratic signal from the J1939 service brake switch as interpreted by the Electronic Brake Control Module (EBCM). This diesel engine fault code suggests that the ECM is receiving inconsistent or unexpected signals from the brake switch, which can affect the vehicle's braking system performance.
What SPN 1121 FMI 19 Means
The SPN 1121 FMI 19 diagnostic tr
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The SPN 1121 FMI 13 fault code indicates that the J1939 service brake switch signal from the Electronic Brake Control Module (EBCM) is missing or not available. This diesel engine fault code suggests a communication issue between the brake switch and the EBCM, which the ECM interprets as a loss of signal or an unavailable condition.
What SPN 1121 FMI 13 Means
SPN 1121 FMI 13 is a diagnostic troub
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The SPN 1121 FMI 2 fault code is a diesel engine diagnostic trouble code indicating that the J1939 Powertrain Message from the Automated Manual Transmission (AMT) - specifically a Detroit transmission - is missing. This code suggests a communication error between the Transmission Control Module (TCM) and the Engine Control Module (ECM), which can impact the transmission's ability to function corre
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The SPN 1089 FMI 13 fault code indicates a communication error where the J1939 AIR1 message, related to air supply pressure, is missing from a secondary source address. This diesel engine fault code suggests that the Engine Control Module (ECM) is not receiving the expected data from a secondary Electronic Control Unit (ECU) on the J1939 data link.
What SPN 1089 FMI 13 Means
SPN 1089 FMI 13 repre
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The SPN 1089 FMI 9 fault code indicates a communication error where the J1939 AIR1 message, responsible for air supply pressure data, is missing from the first source address. This diesel engine fault code suggests that the Engine Control Module (ECM) is not receiving the necessary air supply pressure information, which can affect the vehicle's air system monitoring. What SPN 1089 FMI 9 Means SPN
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The SPN 1077 FMI 14 fault code indicates that there is excessive leakage in the high-pressure fuel system of a diesel engine. This diagnostic trouble code is triggered when the Engine Control Module (ECM) detects that the fuel pressure is dropping faster than expected during a leak down test. This can be a critical issue as it affects the engine's ability to maintain the necessary fuel pressure fo
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The SPN 1077 FMI 6 fault code is a diesel engine diagnostic trouble code that indicates a discrepancy between the desired and actual current in the quantity control valve. This fault suggests an electrical issue within the fuel system, specifically related to the valve responsible for regulating fuel quantity.
What SPN 1077 FMI 6 Means
The SPN 1077 FMI 6 fault code represents a situation where th
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The SPN 1077 FMI 5 fault code is a diesel engine fault code indicating a Quantity Control Valve Error due to current being too low. This diagnostic trouble code suggests an issue with the electrical circuit controlling the fuel quantity control valve, which the Engine Control Module (ECM) monitors for proper operation.What SPN 1077 FMI 5 MeansThe SPN 1077 FMI 5 fault code specifically points to a
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