Home Vehicle Repair P2463 Fault Code – Diesel Particulate Filter Restriction – Soot Accumulation

Vehicle Repair

P2463 Fault Code – Diesel Particulate Filter Restriction – Soot Accumulation

What is the P2463 fault code What is the Diesel Particulate Filter Restriction – Soot Accumulation failure explanation? How do I fix the P2463 fault code What are the symptoms and causes for the P2463 fault code

What is the P2463 fault code? What does it signify?

Diesel-powered vehicles come standard with a diesel particulate filters (DPF). This filter reduces air pollution and increases fuel efficiency by removing toxic particles (soot), from the vehicle’s exhaust. When excessive soot is detected in the DPF system, the P2463 code will be set for all diesel applications.

The DPF system removes approximately ninety percent (or soot) of the exhaust. DPF systems generally work the same way. It consists of a housing made from steel and a filtering component. The filter captures large particles of soot and allows the exhaust gases to flow through the pipe. Exhaust back pressure can rise if the filter accumulates too much soot. The PCM monitors the DPF backpressure using a pressure sensor.

When the backpressure reaches a set limit, the PCM starts a process of regeneration. The temperature inside the DPF must reach a minimum of 650°C (1,200°F) for soot in the filtration element to be burned off. This is achieved by a PCM controlled injection system. An flammable chemical substance such as diesel fuel, or exhaust fluid is used for the injection. It is then sprayed upstream from the DPF. The special liquid will burn harmful particles and turn them into ash. The exhaust pipe then releases the harmless nitrogen and water as ions into the atmosphere. After this, the exhaust backpressure should fall to an acceptable level.

The PCM automatically initiates active DPF regeneration systems. The regeneration process takes place during vehicle operation. Passive DPF regeneration systems need driver interaction. They usually occur after the vehicle is parked. Passive regeneration can take several hours.

If the PCM detects the back pressure has not fallen to a predetermined level after DPF regeneration, the code P2463 will be activated and the check engine light will turn on to notify the driver.

P2463 fault codes can be found on vehicles made by Ford, Chevrolet and Toyota.

What is the P2463 Fault Code?

DPF pressure sensor hoses/lines are prone to clogging and collapse Incorrect/insufficient diesel exhaust fluid is a very common cause of DPF regeneration failure/soot build-up. The SCR (Selective Catalytic Reduction), system can be affected by almost any issue with the injection system. In some cases, the DPF may not be regenerated at all.

Fault code P2463 is most commonly triggered by the following:

– Excessive accumulation of soot due to inadequate DPF regeneration
– Damaged or clogged pressure pipes
– Connectors and/or wiring that are damaged, burnt, shorted or disconnected.
– Defective DPF pressure sensor
– Clogged DPF
– Defective exhaust temp sensor
– Defective Selective Catalytic Reduction System (SCR).
– Insufficient or defective diesel exhaust fluid (DEF).
– Defective SCR injector
Defective or incorrect programming error in SCR control module
– EGR (Exhaust Gas Recirculation), or the EGR valve control circuit, is defective.
– You have less than approximately 20 liters fuel left in your tank
– A PCM that is not working or requires a software upgrade

What are the symptoms for P2463 fault code?

These symptoms may be present if you own a vehicle that has the code “P2463”:

– Illumination for check engine light
DPF housing that has been overheated
– Components for overheated exhaust
– Excessive black smoke coming from the exhaust
– Variation in engine speed
Depending on the nature of the problem and the application, some applications might experience significant power loss.
Fuel consumption may increase noticeably
In severe cases, the engine temperature may reach an abnormally high level
– Other fault codes that are related to DPF systems
– The PCM can be set to failsafe mode and limit engine horsepower

How do I fix the P2463 fault code?

Additional emission codes can be set for vehicles with Selective Catalytic Reductions (SCR) systems. An SCR system that is not working properly can lead to the P2463 error code. You should therefore perform all necessary diagnostics and repairs to the SCR system.

The following repairs may be able to resolve the P2463 fault codes:

– Replacement or repair of the DPF system.
– Replacing an inoperable exhaust pressure sensor
– Filling in or replacing faulty, dirty, or missing diesel exhaust fluid
– Repair of exhaust leaks
– Repair of damaged cables, connectors and open or short circuit issues
– Repair of or replacement for molten wiring that connects to the exhaust pipe.
– Replacement or correction of pressure hoses that have become damaged, collapsed, or blocked
– Replacing faulty components of the SCR/EGR system