Spn 5394 Fmi 7 (2024)

FAQs

What is the engine code 5394? ›

The 5394 fault is simply a derate fault code. This means that a power train derate is active. You will need to check the inactive faults with a service tool if this is the only fault present. Then EGR testing and vgt testing with the service tool will need to take place.

Article. SPN 7 FMI 7 is a diagnostic trouble code (DTC) for a fault with the bank 1 sensor 2 oxygen sensor signal. This code is set when the oxygen sensor signal voltage is out of range. The oxygen sensor is a critical component of the engine management system.

These fields are: Suspect Parameter Number (SPN): Represents the SPN with error. Every defined SPN can be used in a DTC. Failure Mode Identifier (FMI): Represents the nature and type of error that occurred, e.g., value range violation (high or low), sensor short-circuits, incorrect update rate, calibration error.

NOTE: If fault code SPN 1663/FMI 7 is inactive, it may indicate that the vehicle moved during optimized idle operation or that noise was detected on the Vehicle Speed Sensor (VSS).

The dosing valve is controlled by the computer and delivers precise amounts of DEF fluid to the decomposition reactor. The DEF fluid injected by the dosing valve is atomized into a fine mist and converted into ammonia while in the decomposition reactor.

The diagnostic trouble code (DTC) P0216 indicates “Injection Timing Control Circuit Malfunction.” The powertrain control module (PCM) will log this code if it determines that the timing of the diesel-powered vehicle's high-pressure injection pump fails to meet specifications.

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”.

A Suspect Parameter Number (SPN) is a specific code used in the automotive industry to identify and diagnose faults codes in electronic control units (ECUs) within vehicles. These codes are integral to the CAN Bus system, facilitating precise monitoring and troubleshooting of vehicular systems.

Failure Mode Indication (FMI), as part of the J1939 standard used in heavy-duty vehicles, functions by closely monitoring system components. When a fault occurs, FMI generates a precise code that identifies the specific nature of the issue, much like an advanced version of a 'check engine' light.

SPN is short for suspect parameter number. It identifies which electrical circuit, part or component of your truck isn't working properly. FMI stands for failure mode identifier—this part of the fault code tells you what type of problem your truck has.

What does the SPN stand for? ›

A service principal name (SPN) is a unique identifier of a service instance. Kerberos authentication uses SPNs to associate a service instance with a service sign-in account.

Most DTCs can be deleted using an OBD-II scanner, which is a tool used as part of the diagnostic and repair process (allowing mechanics to see if the code returns after a component is replaced, for example). It's also possible to reset a DTC by temporarily disconnecting the vehicle's 12-volt battery.

SPN 3597/FMI 4

This diagnosis is typically Proportional Valve Bank 1 Circuit Failed Low.

FMI 7 – Mechanical System Not Responding: ECA detects excessive motor current or ECA detects incorrect clutch position during a clutch position change for 1 second or longer.

DETROIT DIESEL ENGINE CODE SPN 94 FMI 5: ENGINE FUEL DELIVERY PRESSURE CURRENT BELOW NORMAL OR OPEN CIRCUIT.

A P0500 code is a diagnostic trouble code (DTC) titled “Vehicle Speed Sensor (VSS) Malfunction.” This code is triggered when the vehicle's Powertrain Control Module (PCM) or Engine Control Module (ECM) detects inaccurate speed readings or lack of a signal from the Vehicle Speed Sensor (VSS).

The diagnostic trouble code (DTC) P0236 indicates “Turbocharger/Supercharger Boost Sensor “A” Circuit.” Your vehicle's computer will log the P0236 code when it receives a signal from the boost pressure sensor that fails to match the expected values.

Here are some common fault codes related to VVT solenoid issues: P0010 – “A” Camshaft Position Actuator Circuit/Open (Bank 1) P0011 – “A” Camshaft Position – Timing Over-Advanced or System Performance (Bank 1) P0013 – “B” Camshaft Position – Actuator Circuit/Open (Bank 1)