The FMI is used along with the SPN to provide specific information that relates to a diagnostic trouble code (DTC). The FMI may indicate that a problem with an electronic circuit or an electronic component has been detected. The FMI may also indicate that an abnormal operating condition has been detected.

Get information about Suspect Parameter Number (SPN) and Failure Mode Identifier (FMI) fault code list and read descriptions before engine troubleshooting diy process.

Every diagnostic trouble code (DTC) that you find will have an FMI. This code is set by the ECM detecting a variety of problems, such as too much voltage, not enough voltage, resistance is incorrect, and so on. So here is the list of possible FMI values:

Common FMI errors from 0 to 21 numbers. Suspect Parameter Number (SPN) and Failure Mode Indicator (FMI) full code list.

FMI refers to Failure Mode Identifier. There are diagnostic fault codes indicating specific issues within a component or system circuit. For example, MID 116-CID 854 may report FMI 4, “Voltage below normal.” Among the numerous fault codes at Clue, the most common FMIs are 3 (“Voltage above normal”) and 9 (“Abnormal update rate”).

2021年6月6日 · 诊断故障代码由三部分组成：可疑参数号 (Suspect Parameter Number，简称 SPN) 、故障模式标志 (Failure Mode Identifier，简称 FMI) 及故障发生次数 (Occurrence Count，简称 OC)。 一个故障代码由 4 个字节构成，三个部分的位数分配如表所示。 SAE J1939 诊断报文的构成. 诊断故障代码实例.

2023年3月29日 · FMI - Failure Mode Identifier describes the type of failure detected in the subsystem identified by the PID or SID or PPID or PSID. This just tells you what is wrong with the component that is not working right. 6. SPN- suspect parameter number identifies the specific component or condition that is triggering the fault code.

Number (SPN), and Failure Mode Indicator (FMI) Descriptions This solution helps explain the underlying meaning of the numerical components which build a fault code. - This is not a comprehensive list, or an alternative to the standard fault diagnostic process and only serves as a supplemental reference -

2024年11月9日 · FMI is a 5-bit number that defines the nature of the fault. FMI can indicate a problem with the electrical systems or abnormal conditions detected. Below is the list of FMIs defined in the standard. OC is a 7-bit number and it tells how many times failure has occurred.

The FMI may indicate that a problem with an electronic circuit or an electronic component has been detected. The FMI may also indicate that an abnormal operating condition has been detected. The codes are displayed in the form “SPN – FMI”. The ECM / ECU also attaches a text description to the message that is transmitted over the J1939 ...