OBD · Emissions control
P242F Diesel particulate filter restriction, ash accumulation
What this code means
P242F is a generic OBD code shared by all manufacturers since 2001 for petrol and 2004 for diesel. It relates to: emissions control. The code tells you what the ECU measured as abnormal, not necessarily which part to replace.
Most common causes
- Clogged particulate filter#1
Cost of related repairs
| Independent garage | Main dealer | |
|---|---|---|
| DPF cleaning | £200 – £455 | £260 – £700 |
| Diesel particulate filter (DPF) | £640 – £1,465 | £785 – £2,065 |
How to read this code
An OBD scanner plugged into the 16-pin socket under the steering wheel reads and clears codes. Bluetooth models cost £20 to £40. Clearing a code without fixing the fault is pointless: it comes back.
Related problems
Frequently asked questions
What does code P242F mean?
P242F: Diesel particulate filter restriction, ash accumulation. P242F is a generic OBD code shared by all manufacturers since 2001 for petrol and 2004 for diesel. It relates to: emissions control. The code tells you what the ECU measured as abnormal, not necessarily which part to replace.
Can I drive with code P242F?
Fix soon. Drive gently and as little as possible. The fault can get worse and damage other parts.
How much does it cost to fix P242F?
DPF cleaning: £200 – £455, Diesel particulate filter (DPF): £640 – £1,465.
How to read this code
An OBD scanner plugged into the 16-pin socket under the steering wheel reads and clears codes. Bluetooth models cost £20 to £40. Clearing a code without fixing the fault is pointless: it comes back.