P242F on Volvo: How to Diagnose & Fix
Diesel Particulate Filter Restriction - Ash Accumulation (Bank 1)
1 Volvo model · 1 documented issue · $300-$3,000 repair
P242F on Volvo by model: symptoms, diagnosis and fix
Diesel V60s used mainly for short, low-speed trips cannot reach the exhaust temperatures needed for the diesel particulate filter to passively regenerate, so soot accumulates and the DPF clogs. This brings on reduced power, poor fuel economy, a DPF/emissions warning light, and eventually limp mode and blocked-filter messages. It is one of the most common diesel ownership complaints on this generation and is heavily driving-pattern dependent.
Common Symptoms
- DPF / particulate filter warning light
- Reduced power or limp mode
- Poor fuel economy
- Frequent failed regeneration attempts
- Strong diesel smell or excessive exhaust soot
How to Fix
When the DPF light appears, take the car for a sustained higher-speed drive (e.g., 30-40 minutes at motorway speed in a lower gear to raise exhaust temperature) to trigger an active regeneration. If it will not regen, a forced/static regeneration via diagnostic tool may clear it; a severely blocked filter needs professional cleaning or replacement. Long term, mix in regular longer drives and keep up with oil changes using the correct low-SAPS diesel oil to slow soot loading.
Sources for this issue (2)
P242F code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P242F mean on a Volvo?
P242F stands for "Diesel Particulate Filter Restriction - Ash Accumulation (Bank 1)." P242F is a generic diesel emissions code indicating the engine control module has detected excessive restriction in the Diesel Particulate Filter (DPF) caused by ash accumulation rather than recoverable soot. Unlike soot, ash cannot be burned off through normal or forced regeneration, so this typically signals the DPF is reaching the end of its service life and needs cleaning or replacement. The condition reduces exhaust flow and can trigger reduced-power (limp) mode if left unaddressed. On Volvo it is documented across 1 model: V60.
What are the most common causes of P242F?
The most common causes of P242F are: DPF at end of service life with accumulated non-combustible ash from engine oil additives, Excessive oil consumption (worn rings/valve seals) loading the filter with ash, Use of non-low-ash (non-CJ-4/low-SAPS) engine oil, Repeated incomplete or failed regeneration cycles over time, Faulty DPF differential pressure sensor giving high restriction readings, Clogged or saturated DPF substrate requiring professional cleaning or replacement. The specific cause varies by vehicle.
How much does it cost to fix P242F on a Volvo?
Published repair estimates on Volvo range from $300 to $3,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P242F on a different make?
View P242F across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.