P2463Diesel Particulate Filter Restriction - Soot Accumulation (Bank 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2463 means the soot load in the particulate filter has passed the level at which the engine still regenerates it on its own. GM's 2009 Duramax sets it at 70 g or more for 5 minutes, the 2014 Cruze 2.0 diesel at more than 32 g for 30 s, both as Type A codes; GM's 2018 diesels use the pressure-based soot model with 120 failures in 150 samples. On the Cruze the ECM then turns on the MIL, reduces engine power and blocks normal regeneration, so a dealer service regeneration is needed. GM's bulletin on the related driver messages notes that the filter cleans itself about once per tank and needs driving above 50 km/h; extended idling and stop-and-go traffic keep it from finishing. The underlying cause is not always the driving: Stellantis traced P2463 with P2453 to broken differential pressure sensor wiring and PCM grounds, Mack to a failed aftertreatment fuel doser. Check those before regenerating, or the code returns.
- What you may notice
- DPF full or exhaust filter message in the cluster
- MIL on and reduced engine power
- Higher fuel consumption
- Likely causes
- LikelyRegenerations not completed because of short trips or long idling
- PossibleDifferential pressure sensor, its hoses or wiring reading too high
- RareFault that prevents regeneration (fuel doser, temperature sensor)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.