Failure mode - Ford 6.7L Power Stroke Diesel (Scorpion)

DPF clogging / regeneration problems

Reliability tier: verified - verify before ordering, see /disclosure/

Symptoms

frequent regenerations, more often than roughly every 100-200 miles of mixed driving
codes P2463 (DPF soot accumulation excessive) or P246C (DPF restriction)
a regen that never completes because the truck was shut down mid-cycle, compounding soot load on the next attempt
eventual limp mode if restriction is not addressed

Compare with the other causes of the same sign on this engine: loss of power, limp mode or derate (5 causes) · def, dpf and regeneration warnings (2 causes)

Root cause

The DPF traps soot continuously; the PCM clears it via passive regeneration during sustained highway load or active regeneration (late injections deliberately raise exhaust temperature). Trucks that only see short trips or heavy idle time do not get hot enough, often enough, to complete a full regen, leading to progressive clogging. Ash - the incombustible residue of burned soot and oil additives - accumulates permanently regardless of driving pattern and is why high-mileage DPFs eventually need professional cleaning or replacement even on a healthy engine. EGR-side problems (EGR valve soot clogging / sticking stuck open) load the DPF faster by raising soot production, so a truck regenerating unusually often is not automatically a DPF-only problem.

Diagnosis

do not interrupt an active regen in progress (higher idle, running fans, changed exhaust smell are all normal during one)
a regen frequency well above 100-200 miles mixed driving points upstream: excessive idling, short trips, an EGR fault, or a biased differential-pressure sensor - not necessarily the DPF itself
P2463/P246C mean soot/restriction has outrun the regeneration strategy; forcing repeated manual regens on an already-restricted filter risks cracking the substrate

Fixes

professional DPF cleaning for ash-loaded but structurally sound filters ()

dpf - more than one option: 6.7L Power Stroke Diesel Particulate Filter, Chassis Cab (to 11/18/2019), 6.7L Power Stroke Diesel Particulate Filter, Chassis Cab (from 11/18/2019), 6.7L Power Stroke Diesel Particulate Filter, Pickup

DPF replacement when cleaning is insufficient or the substrate is cracked/restricted beyond service ()

dpf - more than one option: 6.7L Power Stroke Diesel Particulate Filter, Chassis Cab (to 11/18/2019), 6.7L Power Stroke Diesel Particulate Filter, Chassis Cab (from 11/18/2019), 6.7L Power Stroke Diesel Particulate Filter, Pickup

address upstream causes (EGR health, differential-pressure sensor, driving-pattern coaching) rather than treating frequent regens as a DPF-only problem ()

egr-valve - more than one option: 6.7L Power Stroke EGR Valve, Pickup (Wide Frame), 2015 to mid-2016 production, 6.7L Power Stroke EGR Valve, Pickup + Chassis Cab (unified), 2017-2019, 6.7L Power Stroke EGR Valve, Chassis Cab (Narrow Frame), 2015 to mid-2016 production - Service Kit, 6.7L Power Stroke EGR Valve, Pickup (Wide Frame), gen3
dpf-pressure-sensor - more than one option: DPF Differential Pressure Sensor, DPF Differential Pressure Sensor (current service PN BC3Z-9J460-G)

Prevalence

common

Parts for this repair run about $110-$4,400: see them next to the other repairs on this engine in repair costs.