P2002 on Renault: How to Diagnose & Fix
Diesel Particulate Filter Efficiency Below Threshold (Bank 1)
3 Renault models · 3 documented issues · 1 critical · $150-$2,200 repair
P2002 on Renault by model: symptoms, diagnosis and fix
The Kadjar diesel models experience frequent DPF regeneration failures, particularly in vehicles used primarily for short urban commutes. The regeneration process requires sustained load that urban driving cannot provide.
Common Symptoms
- DPF warning light
- Loss of power
- Limp mode
- Increased fuel consumption
How to Fix
Perform a forced regeneration via diagnostic tool. Incorporate a weekly 20-minute motorway drive at 2500+ RPM. Clean the DPF pressure differential sensor pipes.
Sources for this issue (1)
The 1.5 dCi (K9K) diesel Captur is prone to diesel particulate filter clogging when used mainly for short urban journeys that never let the filter complete an active regeneration; the EGR valve typically soots up at the same time, compounding the airflow restriction. After repeated failed regenerations the ECU forces limp mode with 'Check Anti-Pollution System' warnings. On later Euro 6d Blue dCi versions, AdBlue/SCR faults — injector crystallisation, NOx sensor errors and incorrect urea level readings — additionally trigger 'No start in xxx km' countdown restrictions.
Common Symptoms
- 'Check Anti-Pollution System' message with engine warning light
- Reduced power / limp mode
- Frequent active regenerations (raised idle, cooling fan, hot smell)
- Rising fuel consumption
- AdBlue warning with 'No start in xxx km' countdown (Blue dCi models)
How to Fix
A forced regeneration via diagnostic tool or a professional DPF clean usually restores a clogged filter, with EGR valve cleaning or replacement done at the same time; fully blocked filters or failed SCR components (injector, NOx sensor) must be replaced. Prevention is a 20-30 minute sustained-speed motorway run every 300-400 km of urban use and keeping AdBlue topped up with fresh fluid.
Sources for this issue (5)
- Renault Captur Problems: Common Issues and Repair Costs | FixMyCararticle
- Renault Captur 2014-2025 — Most Common Problems, Recurrent Faults, and Repair Costs (DPF, AdBlue/SCR, NOx sensors)article
- Renault Captur 1.5dCi - Check Anti-Pollution System | Honest John Back Room Forumforum
- Check anti pollution system | Renault Captur Owners Club Forumsforum
- How to clean the EGR valve Renault Captur 1 1.5 dCi (carbon clogging) | Mister-Autoarticle
The 2.0 dCi diesel Koleos (150/175 hp variants) is prone to DPF clogging, especially when driven mainly on short, low-speed trips that never allow the filter to reach regeneration temperature. Symptoms include reduced power / limp mode, visible smoke, and a DPF warning light. Faulty differential pressure or exhaust temperature sensors can worsen or falsely trigger the problem, and a botched dealer forced-regeneration has in some cases destroyed the filter outright.
Common Symptoms
- DPF / engine warning light
- Reduced engine power / limp mode
- Excessive exhaust smoke
- Jerking or poor throttle response
- Hard cold starting
- Frequent regeneration cycles
How to Fix
Take the vehicle on periodic longer motorway drives at moderate-to-high RPM to allow passive/active regeneration; verify the differential-pressure and exhaust-temp sensors are working. A clogged filter can often be professionally cleaned (~€100); a destroyed DPF requires replacement (£1,300-£2,000+).
Sources for this issue (3)
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 Renault?
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 Renault it is documented across 3 models: Kadjar, Captur, Koleos.
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 Renault?
Published repair estimates on Renault range from $150 to $2,200 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.