SPN 5319: Aftertreatment 1 Diesel Particulate Filter Regeneration Status

POSTED IN pcodes

Updated on:

Fault Code SPN 5319: Diagnosis, Repair, and Prevention

SPN 5319 is a diagnostic trouble code (DTC) related to issues with the diesel particulate filter (DPF) system. When this code appears, it’s crucial to address the problem promptly to prevent further damage to the engine and emissions system.

In our workshop, we've encountered Fault Code SPN 5319 quite frequently, especially in European diesel vehicles. Just last week, we had a DAF truck with a Paccar engine in for repairs due to this code. After some diagnostics, we found that the DPF was heavily clogged with ash and soot, preventing proper regeneration. We've seen similar issues in Volvos and Renaults as well. It seems that this code is more prevalent in vehicles that do a lot of stop-and-go driving or idling, as it doesn't allow the DPF to regenerate fully. We've also noticed that using low-quality diesel fuel can exacerbate the problem. While we've mostly dealt with European makes, we've heard from colleagues that they've seen SPN 5319 in some American and Asian vehicles too, particularly in Peterbilts, Kenworths, and Hinos.

Urgency and Driving Considerations

If the SPN 5319 fault code appears, it’s generally safe to continue driving for a short period. However, it’s essential to diagnose and repair the issue as soon as possible to avoid potential engine damage or non-compliance with emissions regulations.

In some cases, the engine may enter a “limp mode,” limiting performance until the problem is resolved. If the issue persists or worsens, it’s advisable to stop driving and have the vehicle towed to a dealer or qualified repair shop.

Code Details and Applicability

SPN 5319 is a generic code that applies to various makes and models of diesel vehicles equipped with a DPF system. The code indicates a problem with the DPF differential pressure sensor or related components.

Buy tested tuning file for Adblue / EGR / DPF / Adblue off now!

Register Now or Already have an account,

The DPF differential pressure sensor is a combination sensor that detects both DPF differential pressure and outlet pressure. It plays a crucial role in monitoring the health and efficiency of the DPF system.

Common Causes

Some common causes of the SPN 5319 fault code include:

  1. Faulty DPF differential pressure sensor
  2. Clogged or damaged DPF
  3. Leaking exhaust system components
  4. Wiring issues or damaged connectors

Diagnostic Steps

To diagnose the SPN 5319 fault code, follow these steps:

  1. Check for other related fault codes using a diagnostic scan tool. Common related codes include SPN 2659 FMI 21 and SPN 3719 FMI 15.
  2. Visually inspect the DPF and exhaust system for any signs of damage, leaks, or excessive soot buildup.
  3. Test the DPF differential pressure sensor using a multimeter to ensure proper functionality and accurate readings.
  4. Inspect the wiring harness and connectors for any damage, corrosion, or loose connections.

Solutions and Repair

Depending on the cause of the SPN 5319 fault code, the following repairs may be necessary:

  1. Replace the DPF differential pressure sensor if it’s found to be faulty or providing inaccurate readings.
  2. Clean or replace the DPF if it’s clogged or damaged beyond repair. A professional cleaning service may be required for heavily soiled filters.
  3. Repair any leaks in the exhaust system, including gaskets, clamps, or pipes.
  4. Repair or replace any damaged wiring or connectors.

Prevention and Maintenance

To prevent the occurrence of the SPN 5319 fault code and maintain the health of the DPF system:

  1. Adhere to the manufacturer’s recommended maintenance schedule, including regular oil changes and filter replacements.
  2. Use high-quality, low-ash diesel fuel to minimize soot buildup in the DPF.
  3. Avoid excessive idling, which can lead to incomplete DPF regeneration and clogging.
  4. Address any related fault codes promptly to prevent cascading issues.

Repair Costs

The cost to repair issues related to the SPN 5319 fault code can vary depending on the specific cause and the vehicle make and model. Some estimated costs include:

  • DPF differential pressure sensor replacement: $200 to $600 (€170 to €510)
  • DPF cleaning service: $400 to $800 (€340 to €680)
  • DPF replacement: $1,500 to $3,500 (€1,275 to €2,975)
  • Exhaust system repairs: $100 to $1,000 (€85 to €850) or more, depending on the extent of the damage

It’s essential to consult with a qualified mechanic or dealer for accurate diagnosis and repair estimates specific to your vehicle.

FAQ: Fault Code SPN 5319

What is Fault Code SPN 5319?

Fault Code SPN 5319 is a diagnostic trouble code (DTC) that indicates an issue with the diesel particulate filter (DPF) system, specifically related to the DPF differential pressure sensor or incomplete DPF regeneration.

What are the common causes of SPN 5319?

Common causes of SPN 5319 include a faulty DPF differential pressure sensor, clogged or damaged DPF, leaking exhaust system components, and wiring issues or damaged connectors.

Is it safe to continue driving with SPN 5319?

While it’s generally safe to drive for a short period with SPN 5319, it’s crucial to diagnose and repair the issue promptly to prevent further engine damage or non-compliance with emissions regulations.

Can SPN 5319 cause the engine to enter “limp mode”?

Yes, in some cases, the engine may enter a “limp mode,” limiting performance until the problem is resolved.

What should I do if the issue persists or worsens?

If the issue persists or worsens, it’s advisable to stop driving and have the vehicle towed to a dealer or qualified repair shop.

Is SPN 5319 specific to certain vehicle makes and models?

No, SPN 5319 is a generic code that applies to various makes and models of diesel vehicles equipped with a DPF system.

What is the role of the DPF differential pressure sensor?

The DPF differential pressure sensor is a combination sensor that detects both DPF differential pressure and outlet pressure, playing a crucial role in monitoring the health and efficiency of the DPF system.

What are the diagnostic steps for SPN 5319?

Diagnostic steps include checking for related fault codes, visually inspecting the DPF and exhaust system, testing the DPF differential pressure sensor, and inspecting the wiring harness and connectors.

What repairs may be necessary to address SPN 5319?

Repairs may include replacing the DPF differential pressure sensor, cleaning or replacing the DPF, repairing exhaust system leaks, and repairing or replacing damaged wiring or connectors.

How can I prevent the occurrence of SPN 5319?

To prevent SPN 5319, adhere to the manufacturer’s recommended maintenance schedule, use high-quality, low-ash diesel fuel, avoid excessive idling, and address any related fault codes promptly.

What are some common fault codes that may appear alongside SPN 5319?

Common related fault codes include SPN 2659 FMI 21 and SPN 3719 FMI 15.

Can a clogged DPF cause SPN 5319?

Yes, a clogged or damaged DPF can trigger the SPN 5319 fault code.

How much does it typically cost to repair issues related to SPN 5319?

Repair costs can vary depending on the specific cause and vehicle make and model. Estimated costs range from $200 to $600 for a DPF differential pressure sensor replacement, $400 to $800 for DPF cleaning, $1,500 to $3,500 for DPF replacement, and $100 to $1,000 or more for exhaust system repairs.

What tools are needed to diagnose SPN 5319?

A diagnostic scan tool is essential for checking related fault codes, and a multimeter is used to test the DPF differential pressure sensor. Visual inspections may also require basic hand tools.

Can using low-quality diesel fuel contribute to SPN 5319?

Yes, using low-quality or high-ash diesel fuel can lead to increased soot buildup in the DPF, potentially causing clogs and triggering SPN 5319.

How often should the DPF be cleaned or replaced?

The frequency of DPF cleaning or replacement depends on factors such as vehicle usage, fuel quality, and adherence to maintenance schedules. Consult your vehicle’s owner’s manual or a qualified mechanic for specific recommendations.

Can excessive idling lead to SPN 5319?

Yes, excessive idling can lead to incomplete DPF regeneration and clogging, which may trigger SPN 5319.

What are the emissions regulations related to DPF systems?

DPF systems are designed to comply with stringent emissions regulations, such as EPA and CARB standards in the United States, and Euro standards in Europe. Failing to address SPN 5319 promptly may result in non-compliance with these regulations.

How can I test the DPF differential pressure sensor?

To test the DPF differential pressure sensor, use a multimeter to measure the sensor’s resistance and compare it to the manufacturer’s specifications. Consult the vehicle’s service manual for specific testing procedures.

Should I replace the DPF differential pressure sensor or clean the DPF first?

It’s generally recommended to diagnose the root cause of SPN 5319 before replacing any components. If the DPF is clogged or damaged, cleaning or replacing it may resolve the issue without needing to replace the differential pressure sensor. However, if the sensor is faulty, it should be replaced regardless of the DPF’s condition.

Buy tested tuning file for Adblue / EGR / DPF / Adblue off now!

Register Now or Already have an account,

Related posts