Detroit Diesel DD13, DD15 fault codes for DPF, DOC, SCR, Catalyst replacement needed. (2024)

Table of Contents
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SPN 3056 FMI 2Selective Catalyst Reduction Inlet NOx Sensor – Error
SPN 3057 FMI 2Selective Catalyst Reduction Outlet NOx Sensor – Error
SPN 3216 FMI 3Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed High
SPN 3216 FMI 4Selective Catalyst Reduction Inlet NOX Sensor Circuit Failed Low
SPN 3216 FMI 10Selective Catalyst Reduction Inlet NOx sensor – Signal Erratic
SPN 3216 FMI 13Selective Catalyst Reduction Inlet NOx Sensor Signal Not Available
SPN 3216 FMI 16Selective Catalyst Reduction Inlet NOx Sensor – Drift High
SPN 3216 FMI 18Selective Catalyst Reduction Inlet NOx Sensor – Drift Low
SPN 3216 FMI 21Selective Catalyst Reduction (SCRA) Inlet NOx Sensor – Drift (Low Box)
SPN 3217 FMI 3Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed High
SPN 3217 FMI 5Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed Open
SPN 3226 FMI 13Selective Catalyst Reduction Outlet NOx Sensor Signal Not Available
SPN 3226 FMI 20Selective Catalyst Reduction Outlet NOx Sensor – Drive Low
SPN 3227 FMI 3Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed High
SPN 3227 FMI 5Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed Open
SPN 3238 FMI 2Selective Catalyst Reduction Outlet NOx Sensor Failure to Activate
SPN 3242 FMI 3Diesel Oxidation Catalyst Inlet Temperature Sensor Circuit Failed High
SPN 3242 FMI 4Diesel Oxidation Catalyst Inlet Temperature Sensor Failed Low
SPN 3242 FMI 7Diesel Oxidation Catalyst Inlet Temperature – Signal Not Responding
SPN 3242 FMI 8Diesel Oxidation Catalyst Inlet Temperature – Signal Spike
SPN 3242 FMI 17Diesel Oxidation Catalyst Inlet Temperature Out of Range Low Preventing HC Dosing
SPN 3242 FMI 20Diesel Oxidation Catalyst Temperature Drift – Inlet High or Outlet Low
SPN 3246 FMI 0Diesel Particulate Filter Outlet Temperature – Very High
SPN 3246 FMI 3Diesel Particulate Filter Outlet Temperature Sensor Circuit Failed High
SPN 3246 FMI 4Diesel Particulate Filter Outlet Temperature Sensor Circuit Failed Low
SPN 3246 FMI 8Diesel Particulate Filter Outlet Temperature – Signal Spike
SPN 3246 FMI 15Diesel Particulate Filter Outlet Temperature – High
SPN 3246 FMI 20Diesel Particulate Filter Outlet Temperature Sensor Stuck
SPN 3246 FMI 21Diesel Particulate Filter Outlet Temperature Sensor – Not Plausible
SPN 3246 FMI 7DPF Outlet Temperature Sensor Not Responding
SPN 3246 FMI 2DPF Outlet Temperature Not Plausible
SPN 3250 FMI 0Diesel Oxidation Catalyst Outlet Temperature Very High
SPN 3250 FMI 3Diesel Oxidation Catalyst Outlet Temperature Circuit Failed High
SPN 3250 FMI 4Diesel Oxidation Catalyst Outlet Temperature Circuit Failed Low
SPN 3250 FMI 7Diesel Oxidation Catalyst Outlet Temperature Circuit Failed Low
SPN 3250 FMI 8Diesel Oxidation Catalyst Outlet Temperature – Signal Spike
SPN 3250 FMI 15Diesel Oxidation Catalyst Outlet Temperature High
SPN 3250 FMI 20Diesel Oxidation Catalyst Temperature Drift – Inlet Low or Outlet High
SPN 3250 FMI 31Abnormal Diesel Oxidation Catalyst Temperature Rise
SPN 3251 FMI 0Diesel Particulate Filter Pressure Out of Range Very High
SPN 3251 FMI 1Diesel Particulate Filter Pressure Out of Range Low
SPN 3251 FMI 16Diesel Particulate Filter Pressure Out of Range High
SPN 3251 FMI 20Diesel Oxidation Catalyst Inlet Pressure – Not Plausible
SPN 3251 FMI 21Diesel Oxidation Catalyst Inlet/Outlet Pressure – Not Plausible
SPN 3609 FMI 3Diesel Oxidation Catalyst Inlet Pressure Sensor Circuit Failed High
SPN 3609 FMI 4Diesel Oxidation Catalyst Inlet Pressure Sensor Circuit Failed Low
SPN 3610 FMI 3Diesel Particulate Filter Outlet Pressure Sensor Circuit Failed High
SPN 3610 FMI 4Diesel Particulate Filter Outlet Pressure Sensor Circuit Failed Low
SPN 3610 FMI 2Diesel Oxidation Catalyst Inlet Pressure – Not Plausible
SPN 3695 FMI 9DPF Regen Inhibit MUX Switch Message Stopped Arriving
SPN 3695 FMI 13DPF Regen Inhibit MUX Switch Message Contains SNV Indicator
SPN 3695 FMI 14DPF Regen Inhibit MUX Switch Message Not Received this Ign Cycle
SPN 3695 FMI 19DPF Regen Inhibit MUX Switch Message Contains Data Error Indicator
SPN 3696 FMI 4Diesel Particulate Filter Regeneration Switch Short Circuit to Ground
SPN 3696 FMI 9Diesel Particulate Filter Regen Force MUX Switch Message Stopped Arriving
SPN 3696 FMI 13Diesel Particulate Filter Regen Force MUX Switch Message Contains SNV Indicator
SPN 3696 FMI 14Diesel Particulate Filter Regen Force MUX Switch Message Not Received this Ignition Cycle
SPN 3696 FMI 19Diesel Particulate Filter Regen Force MUX Switch Message Contains Data Error Indicator
SPN 3719 FMI 15Diesel Particulate Filter Zone 3 Condition
SPN 3719 FMI 31Silent Code That Logs When the Diesel Particulate Filter Regeneration Lamp is Flashing in ” Regen Zone 2″.
SPN 3719 FMI 0DPF Filter Soot Level is Very High
SPN 3719 FMI 16DPF Filter Soot Level is High
SPN 3720 FMI 15Diesel Particulate Filter Has Reached the End of its Service Life
SPN 3936 FMI 18Diesel Particulate Filter (DPF) Pressure – Out of Range Low
SPN 4332 FMI 31DOC Inlet Temperature Out of Range Low Preventing Dosing
SPN 4360 FMI 2Selective Catalyst Reduction Inlet Temperature – Not Plausible
SPN 4360 FMI 3Selective Catalyst Reduction Inlet Temperature Sensor Circuit Failed High
SPN 4360 FMI 4Selective Catalyst Reduction Inlet Temperature Sensor Circuit Failed Low
SPN 4360 FMI 8Selective Catalyst Reduction (SCR) Inlet Temperature Signal Spike
SPN 4360 FMI 15Selective Catalyst Reduction Inlet Temperature High
SPN 4360 FMI 20Selective Catalyst Reduction Inlet Temperature Sensor Drift High in Range
SPN 4360 FMI 31Selective Catalyst Reduction Inlet Temperature Not Warming Up
SPN 4363 FMI 2Selective Catalyst Reduction Outlet Temperature – Not Plausible
SPN 4363 FMI 3Selective Catalyst Reduction Outlet Temperature Sensor Circuit Failed High
SPN 4363 FMI 4Selective Catalyst Reduction Outlet Temperature Sensor Circuit Failed Low
SPN 5018 FMI 18Diesel Oxidation Catalyst Efficiency Fault
SPN 5298 FMI 14Selective Catalytic Reduction Catalyst Abnormal Temperature Rise
SPN 5323 FMI 13Excessive Time to Enter Closed Loop Fuel Pressure Control
SPN 5443 FMI 0DPF HC Absorption Very High
SPN 5443 FMI 15DPF HC Absorption Warning SPN
SPN 5443 FMI 16DPF HC Absorption High
SPN 5488 FMI 5Selective Catalyst Reduction Line Heater 5 Circuit Failed Open
SPN 520232 FMI 9NOx Mass Signal Not Available via Controller Area Network
SPN 520323 FMI 3High Side Digital Output Circuit Failed High
SPN 520323 FMI 4High Side Digital Output Circuit Failed Low
SPN 520326 FMI 3Under Pressurized Diesel Exhaust Fluid System
SPN 520326 FMI 4Over Pressurized Diesel Exhaust Fluid (DEF) System
SPN 520327 FMI 3Under Pressurized Diesel Exhaust Fluid System
SPN 520327 FMI 4Over Pressurized Diesel Exhaust Fluid System
SPN 520328 FMI 7Diesel Exhaust Fluid System has Been Over-Pressurized
SPN 520329 FMI 31Non Diesel Exhaust Fluid Flow Situation
SPN 520332 FMI 17Diesel Oxidation Catalyst Inlet Temperature Out of Range Low Preventing HC Dosing
SPN 520349 FMI 14DPF Filtration Efficiency Low
SPN 520363 FMI 3Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed High
SPN 520363 FMI 5Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed Open
SPN 520364 FMI 3Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed High
SPN 520365 FMI 3Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed High
SPN 520365 FMI 5Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed Open
SPN 520366 FMI 3Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed High
SPN 520366 FMI 5Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed Open
SPN 520367 FMI 3Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed High
SPN 520367 FMI 5Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed Open
SPN 520368 FMI 14Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed Open
SPN 520368 FMI 31Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed High
SPN 520371 FMI 16Selective Catalyst Reduction Closed Loop Control at Maximum Limit (Multiples Sources)
SPN 520372 FMI 14Selective Catalyst Reduction Closed Loop Control at Maximum Limit (Timeout)
SPN 520372 FMI 16Selective Catalyst Reduction Closed Loop Control at Maximum Limit
SPN 524285 FMI 4CM1 DPF Regeneration Switch Short Circuit to Ground
SPN 630 FMI 13Selective Catalytic Reduction Number Out of Range
SPN 3216 FMI 2Selective Catalyst Reduction Inlet NOx Sensor Rationality Error
SPN 3226 FMI 2Selective Catalyst Reduction Outlet NOx Sensor – Drift
SPN 3226 FMI 3Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed High
SPN 3226 FMI 4Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed Low
SPN 3226 FMI 21NOx Outlet Sensor Drift High
SPN 3361 FMI 31Diesel Exhaust Fluid Dosing Unit Error
SPN 3556 FMI 0Regeneration Temperature – Out of Range High
SPN 3556 FMI 1Regeneration Temperature – Out of Range Low
SPN 3556 FMI 18Diesel Oxidation Catalyst Outlet Temperature Low (Low Temp Regeneration)
SPN 3711 FMI 31High Idle Regeneration (Aborted) – Low Exhaust Temperature
SPN 3713 FMI 31High Idle Regeneration Aborted – Low Regeneration Temperature
SPN 4360 FMI 10Selective Catalyst Reduction Inlet Temperature Sensor – Rationality Error
SPN 4363 FMI 0SCR Outlet Temperature High
SPN 4363 FMI 8SCR Outlet Temperature Signal Spike
SPN 4363 FMI 20SCR Temperature Drift – Inlet Low/Outlet High
SPN 4364 FMI 18SCR NOx Conversion Efficiency Low
SPN 5246 FMI 15Regulatory Fault Ignored – Derate On
SPN 5312 FMI 7Intake Manifold Pressure Low
SPN 5435 FMI 7Non Diesel Exhaust Fluid Flow Situation

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See Also
What Is Code SPN 3719 FMI 31, FMI 0, FMI 16? (Freightliner)

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Detroit Diesel DD13, DD15 fault codes for DPF, DOC, SCR, Catalyst replacement needed. (2024)

FAQs

What is the code for DPF sensor fault? ›

DPF fault codes

There are many fault codes associated with diesel particulate filters (DPF), but here are some common examples: P2002 : Diesel particulate filter performance problem – Blockage of the particulate filter. P2452 : Diesel particulate filter regeneration pressure – Signal out of tolerance / too low.

Show Me More ›
What is the error code for diesel particulate filter? ›

Most often, trouble code P2002 is a result of a clogged DPF. You'll simply need to burn off some of the soot to clear the filter and restore its functionality. Of course, there are many other reasons that this error code could be triggered. A damaged sensor, air leak, or damaged DPF could all be causes.

Read More ›
What should doc inlet pressure be? ›

The DOC inlet pressure should be less than 9 kPa (1.3 psi) for a 1-Box ATS and 12 kPa (1.74 psi) for a Two-Box ATS.

Explore More ›
What is DPF pressure out of range very high? ›

This diagnostic is typically Diesel Particulate Filter (DPF) Pressure Out of Range Very High. This fault code sets when the DPF outlet pressure is greater than 35 kPa (5 psi) for more than 10 seconds.

Get More Info Here ›
How to tell if a DPF sensor is bad? ›

Here are some signs that indicate the DPF is not regenerating properly due to the DPF sensor failing:
  1. Poor engine performance.
  2. Poor fuel economy.
  3. High engine temperatures.
  4. High transmission temperatures.
  5. An increase in black smoke (soot) from the exhaust.
  6. Check engine light.

Tell Me More ›
How to fix a DPF fault? ›

How to unblock a DPF? 1) DPF Regeneration - Find a motorway near you where you can drive at 70+ MPH for 30-45 minutes; this should provide the optimal conditions for the regeneration process to complete. If this works, consider a regular drive along a motorway regularly to allow the regeneration process to complete.

Read More ›
What is the DPF fault symbol? ›

A lit-up diesel particulate filter warning light looks like a piped box with dots in the middle, but this can vary by manufacturer. It lets you know there is an issue with your vehicle's DPF, usually indicating that it's blocked with soot or struggling to regenerate (the process of cleaning itself).

See More ›
What are three DPF malfunctions? ›

The most common reasons for DPF blockages are: Short journeys where the engine doesn't reach optimum operating temperature; Clogged EGR Valve increasing diesel soot passed to the DPF; Faulty fuel injectors sending too much fuel to the air/fuel mixture; Incorrect engine oil upon servicing the car ; Turbocharger failure ...

Show Me More ›
How to clear DPF warning light? ›

If your DPF light turns on, the first thing you should do is attempt to initiate a DPF regeneration cycle. This can be done by driving at a consistent speed of at least 40 mph for approximately 10 minutes. This higher sustained speed increases the exhaust temperature, which can often trigger a DPF regeneration.

Continue Reading ›
What causes high doc inlet pressure? ›

If the DOC inlet pressure starts out high above 10 kPa (1.45 psi) and decreases during the parked regen, this indicates the DPFs were plugged and the parked regen cleared them.

Show Me More ›

What is normal DPF differential pressure? ›

6-10 hPa at idle. This pressure should not exceed 100hPa at Idle. Note: a “restricted DPF” during road test load conditions may indicate a reading of approx. 300-350hPa that would require replacement of the DPF to rectify driveability concerns.

See Details ›
Where is the pressure sensor on a DPF outlet? ›

The DPF differential pressure sensor is usually mounted in the engine compartment to protect it from heat. The sensor is connected to the engine control unit (ECU) by an electrical connector and connected to the DPF via two silicon hoses.

Discover More Details ›
How to clear DPF code? ›

DPF ADDITIVE LEVEL RESET STEPS:
  1. Jack up the vehicle. Disconnect the battery. ...
  2. Remove the dosing pump hose(s) (3). Remove the additive reservoir from the housing (1). ...
  3. Fit in the reverse order. Reset the level display to zero. ...
  4. Select the vehicle as shown in the illustration. ...
  5. Further information. ...
  6. Tools and equipment.

Know More ›
How do you clear a clogged DPF sensor? ›

A very common way to begin cleaning a DPF is to use high-pressure, compressed air. You can achieve this best by using a high-pressure cleaning cabinet, which backflush compressed air into the filter and forces ash to dislodge any blockage.

Know More ›
Can I drive with a faulty DPF sensor? ›

If you continue to drive with the DPF warning indicator alight it is likely that eventually the Engine Control Unit (ECU) will cut in and put your vehicle into 'Limp Mode' in order to protect the engine from further damage.

Learn More ›
What is another name for the DPF sensor? ›

What is the DPF differential pressure sensor responsible for? A diesel particulate filter (DPF), also known as a particulate filter, is a type of special exhaust filtering device. Its task is to remove soot and particulate matter harmful to the environment, which are contained in exhaust fumes emitted by the engine.

Discover More ›
What does DPF system fault mean? ›

Primarily, the DPF light is designed to alert you when the DPF filter becomes too full of soot and can't self-clean. This often happens when the vehicle is frequently driven for short distances or at low speeds, not allowing the DPF to reach the temperature required for a successful regeneration.

Keep Reading ›

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