OBD-II code · generic

P2463

Particulate Filter Restriction - Soot Accumulation Bank 1

System: Diesel particulate filter (DPF)
Severity: Moderate (3/5)
Can I keep driving?: Drive with caution

What does P2463 mean?

P2463 is defined as “Particulate Filter Restriction - Soot Accumulation Bank 1”. This code indicates excessive soot build-up in the diesel particulate filter (DPF), a regeneration that couldn't be completed, or a problem with the filter's pressure/particulate sensor.

Drive gently and only as far as you need to; have it checked as soon as possible.

Symptoms

DPF warning light and check engine light come on
Loss of power; the car may go into limp mode
Raised idle speed, fan running after the engine is switched off (regeneration attempt)
Higher fuel consumption

Common causes

Regeneration can't complete because of constant short trips/city driving
Cracked or blocked DPF differential pressure sensor or its hoses
Unsuitable (high-ash) engine oil, excessive oil burning
Excess soot from the EGR, injectors or turbo

How to diagnose it

With a diagnostic tool, read the DPF soot load (grams), differential pressure and the time of the last regeneration.
Check the differential pressure sensor hoses for cracks, looseness and blockages.
Check the engine oil level — regeneration attempts can dilute the oil with fuel and raise the level.
If there are EGR, injector or turbo codes causing excess soot, fix those first.

How to fix it

If the soot load is near the limit, complete a passive regeneration by driving 20–30 minutes on the motorway at steady revs.
If the load is high, have a forced (static) regeneration done with a diagnostic tool.
If regeneration isn't possible, the DPF is cleaned or replaced; removing the DPF is not legal and fails inspection.
Replace a faulty differential pressure sensor and reset the sensor adaptation.

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This page is general information; an exact diagnosis needs measurements and a technician’s check.