P2002 on Peugeot: How to Diagnose & Fix
Diesel Particulate Filter Efficiency Below Threshold (Bank 1)
5 Peugeot models · 5 documented issues · 5 critical · $200-$2,500 repair
P2002 on Peugeot by model: symptoms, diagnosis and fix
Diesel 208 models suffer from premature DPF blockage, particularly in vehicles used predominantly for short urban journeys. The DPF cannot complete its regeneration cycle during short trips, leading to progressive soot buildup.
Common Symptoms
- DPF warning light
- Reduced engine power
- Increased fuel consumption
- Strong diesel smell
How to Fix
Perform a forced DPF regeneration using diagnostic equipment. For severely blocked filters, professional DPF cleaning or replacement is required. Advise regular motorway driving to allow passive regeneration.
Sources for this issue (2)
The 308 diesel models experience frequent DPF regeneration failures, especially in stop-start urban driving conditions. The additive-based DPF system requires periodic Eolys fluid refills that are often overlooked during servicing.
Common Symptoms
- DPF warning light
- Limp mode activation
- Failed regeneration attempts
How to Fix
Top up the Eolys DPF additive fluid, perform a forced regeneration, and clean the DPF pressure sensor pipes. Replace the DPF if soot loading exceeds recoverable levels.
Sources for this issue (3)
Partner and Rifter vans used for urban delivery work are extremely susceptible to DPF blockage due to the constant stop-start nature of commercial use. The duty cycle rarely allows for passive regeneration.
Common Symptoms
- DPF warning light
- Limp mode
- Reduced pulling power
- Frequent regen attempts
How to Fix
Schedule regular forced DPF regenerations as part of fleet maintenance. Where possible, build a regular longer run at steady speed into the daily route so the DPF can regenerate. Where an Eolys additive system is fitted, check the additive at service and refill or replace it when due, then reset the additive counter with Peugeot diagnostics (Diagbox).
Sources for this issue (2)
The 508 diesel suffers from DPF regeneration failures, particularly on first-generation models with the additive DPF system. Frequent short journeys prevent the regeneration cycle from completing, leading to progressive soot buildup.
Common Symptoms
- DPF warning indicator
- Power loss
- Limp mode
- Excessive exhaust particulates
How to Fix
Perform forced DPF regeneration via diagnostic tool. Top up the Eolys additive system. For severely blocked units, professional off-car DPF cleaning is recommended before resorting to replacement.
Sources for this issue (2)
The 5008 diesel shares the PSA DPF issues common across the range, with the heavier seven-seat body exacerbating regeneration difficulties. School-run and city driving patterns are the primary triggers for premature blockage.
Common Symptoms
- DPF warning light
- Reduced power
- Engine limp mode
- Strong exhaust odor
How to Fix
Force DPF regeneration, ensure Eolys additive is topped up, and incorporate regular extended motorway drives. Replace the DPF if ash loading is beyond cleaning capability.
Sources for this issue (2)
P2002 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 P2002 mean on a Peugeot?
P2002 stands for "Diesel Particulate Filter Efficiency Below Threshold (Bank 1)." P2002 indicates that the diesel particulate filter (DPF) on bank 1 is performing below its required efficiency threshold. The DPF captures and stores soot from diesel exhaust and periodically burns it off (regeneration); the engine computer monitors exhaust pressure across the filter and other data to judge how well it's trapping and clearing soot. When that efficiency falls too low, this code sets. Symptoms can include reduced power, a clogged-filter warning, frequent or failed regenerations, and increased emissions. On Peugeot it is documented across 5 models: 208, 308, Partner/Rifter, 508, 5008.
What are the most common causes of P2002?
The most common causes of P2002 are: Clogged or damaged diesel particulate filter, Failed or incomplete DPF regeneration (mostly short trips), Faulty differential (DPF) pressure sensor or hoses, Faulty exhaust temperature sensor(s), Exhaust leak before or across the DPF, Engine running issues causing excess soot (injectors, EGR, turbo), Use of incorrect (non-low-ash) engine oil or fuel quality issues. The specific cause varies by vehicle.
How much does it cost to fix P2002 on a Peugeot?
Published repair estimates on Peugeot range from $200 to $2,500 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.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.