P207F on Dacia: How to Diagnose & Fix
Reductant Quality Performance
1 Dacia model · 1 documented issue · 1 critical · $300-$1,500 repair
P207F on Dacia by model: symptoms, diagnosis and fix
The 1.5 Blue dCi (post-2018 Euro 6d) in Duster, Sandero, Logan uses an SCR/AdBlue system that has been the subject of multiple TSBs across Renault-Nissan-Dacia. Common faults: AdBlue heater failure (cold-weather), NOx sensor failure, AdBlue injector clogging, eventually limp mode and 1,000-mile countdown warning.
Common Symptoms
- AdBlue warning
- limp mode
- 1000 mile countdown
- EML
How to Fix
NOx sensor replacement €300-€500. AdBlue heater + injector module €350-€700. AdBlue tank replacement €600-€1,200. Always top up AdBlue at every service to avoid crystallization. Some markets covered by Renault extended warranty — check records.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- PEAK BlueDEF ISO 22241 diesel exhaust fluid, 2.5 gallons
top up the SCR tank with compliant DEF after checking level and contamination Fitment/availability: Dacia Duster 1.5 Blue dCi SCR tank only; fresh sealed product conforms to ISO 22241-1, verify required refill quantity and never pour int…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
P207F 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 P207F mean on a Dacia?
P207F stands for "Reductant Quality Performance." This code applies to diesel vehicles with a Selective Catalytic Reduction (SCR) emissions system and means the quality of the diesel exhaust fluid (DEF, also called reductant or AdBlue) does not meet the required specification. The SCR system injects DEF into the exhaust to chemically neutralize nitrogen-oxide (NOx) pollutants, and the computer monitors NOx sensors and the DEF quality sensor to confirm the fluid is doing its job. When it concludes the reductant is contaminated, diluted, the wrong fluid, or not reducing emissions effectively, it sets this code. It generally indicates a DEF quality or SCR efficiency problem and often triggers reduced power or limited restarts to force the issue to be fixed. On Dacia it is documented across 1 model: Duster.
What are the most common causes of P207F?
The most common causes of P207F are: Contaminated, diluted, or wrong fluid in the DEF tank (e.g., water or fuel), Poor-quality or expired/degraded DEF, Faulty DEF quality sensor, Failing or clogged DEF (reductant) injector, Faulty NOx sensor(s), DEF system or exhaust leaks, Aged or damaged SCR catalyst. The specific cause varies by vehicle.
How much does it cost to fix P207F on a Dacia?
Published repair estimates on Dacia range from $300 to $1,500 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.
Looking for P207F on a different make?
View P207F 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.