Spn 4355 Fmi 5 (2024)

FAQs

What is the code 4355 on a dd15 engine? ›

The code is for a DEF line heater line circuit open. Look at the DEf pump and there are heater lines that run across the bottom to the doser. They should have a little tag on the line for the number such as heater 1, 2 and so on. The usual issue is the connector where the line meets the body connector.

SPN stands for Suspect Parameter Number. It's a diagnostic trouble code that provides detailed information about specific faults detected by the vehicle's ECU, making it easier to identify and address issues within the vehicle's electronic systems.

This is just an informational fault code that you need to replace or clean your DPF filter. The aftertreatment diesel particulate filter (DPF) is located in the exhaust system, and it's installed by the original equipment manufacturer (OEM).

SPN 168/FMI 1

Description This fault code sets when the Integrated Predictive Powertrain Control (IPPC) module detects that the battery voltage is too low.

Worn or damaged oil pick-up tube o-rings: The o-rings that connect the oil suction manifold to the oil pump can become worn or damaged over time, which can cause low oil pressure. Replacing the o-rings is usually the best way to fix this problem.

On the DD15 with an asymmetrical turbocharger, the Exhaust Gas Recirculation (EGR) actuator is located on the cylinder block as opposed to the turbo-compound model DD15, where the EGR actuator is mounted in a bracket on the exhaust manifold.

The FMI 5 in this example tells us that there is low current (amps) or an open in the circuit. Generally, this type of fault tells us that there is a wire that is broken or disconnected.

SPN stands for Suspected Parameter Number which tells you the circuit where the fault occurred. For example, if you had a SPN 1791 code, it would point to a fault detected in the EGR Valve Control Circuit. FMI stands for Failure Mode Indicator which tells you the reason the fault code was set.

SPNs go from 0 to over 50,000. Again, the SPN was needed because of the extra complexity of commercial trucks. The other thing you would notice that both lists are almost identical from 0 to 511. The important thing to understand is that there is a “static” list of SPN numbers, but not every vehicle uses each one.

The average cost of cleaning, and regeneration of diesel particulate filter is £300, with prices ranging from £160 to £500. Hence, the exact price of a DPF cleaning job depends largely on your car, the extent of work needed and the parts your car's manufacturer recommends.

How much soot is too much in a DPF? ›

In other words, the amount of ash equals the amount of soot at the maximum allowable soot load limit of 6 g/L. Further, after 150,000 miles (241,000 km) of operation—equivalent to the minimum EPA ash cleaning interval—ash comprises over 80% of the material trapped in the DPF, with the minority being soot.

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 4374/FMI 0. Description. This Code Sets When the Diesel Exhaust Fluid (DEF) Pump Speed. is Higher than Normal For a Given DEF Pressure. Monitored Parameter.

SPN 715/FMI 4

This fault indicates a short to ground on the pin 12 circuit of the Conunon Powertrain Controller (CPC) #4 connector.

SPN 520998 / FMI 15

This fault indicates the TCM has detected the clutch kiss point (point at which torque starts to transfer through the clutch) is out of calibration limit.

P244A code will set if the exhaust pressure differential sensor lines are disconnected or blocked. The code sets when the ECM detects the diesel particulate filter exhaust differential pressure sensor is lower than the minimum threshold.

To disconnect a DEF line, push the line coupling in towards the male connector to move the holding clip to the unlocked position, then compress the prongs of the holding clip and pull the line off of the male connector. Failure to properly remove a DEF line can result in damage to a line coupling or DEF fitting.

For high pulling power, the DD15 has a bore of 139 mm and a stroke of 163 mm, which leaves stroke reserves for future increases in swept volume.