What is OBD-II Code P2464 – Particulate Filter Differential Pressure Too Low Bank 2

Particulate Filter Differential Pressure Too Low Bank 2 is a particular malfunction code that shows up on your vehicle’s dashboard whenever the differential pressure (DPF) is below the acceptable level. It is a sign that your car’s exhaust system needs immediate inspection. This article will provide insight on what OBD-II Code P2464 means and how to repair the issue.

Understanding OBD-II Codes

Before delving into the technicalities of OBD-II Code P2464, it’s worth understanding what OBD-II codes are. The On-Board Diagnostics system (OBD) is a standardized system installed in modern vehicles to control and monitor critical functions. Whenever an issue arises, the system identifies the problem and stores information code in the vehicle’s onboard computer.

These codes are referred to as Diagnostic Trouble Codes (DTC) or OBD-II codes. They reflect various warning signs indicating issues in different parts of a vehicle, making it easier for mechanics to identify and repair the problem.

OBD-II Code P2464 – Particulate Filter Differential Pressure Too Low Bank 2

OBD-II Code P2464 shows up when your vehicle’s particulate filter differential pressure is lower than the manufacturer’s acceptable range. The differential pressure sensor (DPS) mounted on the exhaust system measures the difference between the exhaust gas pressures pre- and post-particulate filter. It indicates the levels of particulate present, which range from zero to excessively high. Too much pressure indicates that the filter is clogged or blocked, while low pressure suggests a fault in the system.

The code indicates a possible blockage, damage, or inefficiency in the DPF system, which could affect the vehicle’s overall performance. When the filter is clogged or damaged, the regeneration process of burning off soot from the filter will be affected. This situation could lead to a more costly repair or replacement of the DPF system.

How to Repair the Issue

It’s essential to note that OBD-II Code P2464 means that there is a problem in your car’s DPF system, which can affect the exhaust system’s overall performance. If ignored, it could lead to further damage in other parts of the car. Therefore, it’s crucial to address this issue whenever it appears on your dashboard.

Here’s how to repair the code:

1. Inspect the DPF system

The first and most straightforward step to take when faced with this issue is to check the DPF system. It is essential to remove the DPF and carry out a thorough inspection. This process involves inspecting the DPF for any blockages or damages, which could inhibit the regeneration process. After inspection, clear any blockages found and replace any damaged parts.

2. Replace the Differential Pressure Sensor

When the DPF system is clear of blockages, but the code persists, it is recommended to replace the Differential Pressure Sensor. The Differential Pressure Sensor is responsible for monitoring the DPF, and when it fails, it could lead to low-pressure levels, affecting the exhaust system’s overall performance. Replacing the sensor could resolve the issue.

3. Reset the Diagnostic Trouble Code

After fixing the issue, it is essential to reset the DTC. This process clears the OBD system’s memory and switches off the Check Engine Light (CEL) on the dashboard. This step ensures that the vehicle readies itself to monitor and check for new issues.


1. Can I still drive my car when the P2464 code appears on my dashboard?

It is not recommended to drive your car around when the P2464 code appears on your dashboard. Ignoring the code’s warning could cause further damage to other parts of the car. It could also lead to high repair costs.

2. Can low fuel pressure lead to the P2464 code persisting?

No, low fuel pressure does not directly affect code P2464. However, it’s recommended to check other codes alongside the P2464 code to ensure a thorough inspection of the vehicle.

3. Is it costly to repair the P2464 code?

The cost of repairing the P2464 code varies depending on the extent of the damage. If caught early, and necessary inspections carried out, the cost could be on the lower side, but if ignored, it could lead to higher repair costs.

4. How often should I carry out maintenance inspection on my DPF system?

It’s essential to carry out maintenance inspection on your DPF system regularly, typically every 10,000 miles. This process helps you catch any issue early on and prevent costly repairs.

5. Are there any other issues that could lead to the P2464 code appearing on my dashboard?

Yes, other conditions such as a damaged or corroded wiring harness, or a fault in the Electronic Control Module (ECM) could lead to code P2464 appearing on your dashboard.


OBD-II Code P2464 – Particulate Filter Differential Pressure Too Low Bank 2, is a code that requires immediate attention to prevent further damage to your car’s exhaust system. Whenever this code appears on your dashboard, it’s recommended to inspect the DPF system, replace the Differential Pressure Sensor, and reset the DTC. By following these steps, you can keep your car in excellent condition and avoid more expensive repairs.

Remember to carry out regular maintenance inspections on your DPF system, and when in doubt, seek the help of a professional mechanic. By doing so, you can keep your vehicle running smoothly while ensuring that it meets the necessary environmental and safety standards.

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