Faulty DPF Regeneration Status
Indicates an issue with Diesel Particulate Filter regeneration process.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer is seeing that the DPF isn't cleaning itself as it should, which can lead to clogging and lower performance.
What the computer is actually seeing
The vehicle's computer monitors the DPF for pressure differences during regeneration. It expects a certain drop in pressure indicating the filter is clearing out soot. If the pressure drop is too low or not happening, it triggers this code.
What a healthy reading looks like
During regeneration, expected pressure drop across the DPF should be around 10-20 kPa. Normal back pressure should be below 3 kPa at idle.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect DPF for obvious damage or excessive soot buildup; clean or replace if necessary. Decision: Is the DPF clean? Yes: Go to step 2. No: Clean or replace DPF.
Common causes
- Clogged Diesel Particulate Filter (DPF)
- Faulty DPF pressure sensors
- Insufficient fuel quality or grade
- Faulty fuel injectors causing incomplete combustion
- Exhaust leaks before the DPF leading to incorrect readings
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I still drive the vehicle with this code?
It's not recommended; it may lead to reduced performance or even a no-start situation.
Will this code come back after clearing?
If the underlying issue isn't resolved, yes, it will return.
Why does this code pair with low power issues?
It pairs with low power because a clogged DPF restricts exhaust flow, affecting engine performance.
Working a real vehicle right now?
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