Face Plugged DOC

[Nilao]

Here is the whole write up for code 3376. It mentions nothing about the DOC

Fault Code: 3376

Aftertreatment Diesel Particulate Filter (DPF) Incomplete Regeneration - Condition Exists. The system has detected that the aftertreatment DPF differential pressure is too high following an active regeneration.Possible frequent need for aftertreatment regeneration.
The aftertreatment DPF differential pressure sensor is mounted on the DPF. It is a combination sensor that detects both DPF differential pressure and outlet pressure.
Possible causes of this fault code include:
Malfunctioning aftertreatment temperature sensor(s)
Malfunctioning or stuck in-range aftertreatment DPF differential pressure sensor
An engine malfunction resulting in high engine out smoke
Damaged or malfunctioning equipment manufacturer wiring harness to the differential pressure sensor
Aftertreatment DPF with excessive ash accumulation caused by lubricating oil consumption or coolant consumption.