Diesel Particulate Filter Efficiency Below Threshold (Bank 1)

The Diesel Particulate Filter (DPF) on bank 1 is not filtering exhaust soot as efficiently as required.

Common causes

• Clogged or damaged DPF
• Faulty differential pressure sensor
• Incomplete DPF regeneration (lots of short trips)
• Exhaust leak before the DPF

Possible symptoms

• Check Engine Light on
• Reduced power / limp mode
• Increased fuel consumption
• Frequent regenerations

Code breakdown

Owner experiences (1)