KNOWN FAULTS · Dacia
Dacia Duster (II) 1.5 dCi / Blue dCi (K9K) common problems.
2017–2024 · Diesel
Sources are not verified in real time and no entry confirms that your car is affected.
13 known faults with sources
1.5 dCi injection warning light from the cylinder pressure sensor (Duster)Injection / turbo
- Engine / equipment
- Dacia Duster 1.5 dCi (K9K) from 2017
- Period mentioned
- 2017 onwards
- Symptoms
- Injection warning light on and a “Check injection” message; the car usually drives normally. Fault codes 03DB12 or 03DB25 (“cylinder pressure sensor out of range”).
- Possible cause described
- The cylinder pressure sensor is not tightened correctly or the injection ECU has faulty software. Dacia technical note 66633 says to retighten it to the manufacturer's torque and update the ECU, usually without replacing parts.
- Check for the garage
- Read the codes with diagnostic equipment compatible with Renault and Dacia; if 03DB12 or 03DB25 appear, ask the garage about technical note 66633 before replacing injectors or sensors.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryApplies if: Only the 1.5 Blue dCi built before 30/9/2019.
Constant whine in the cabin from the 1.5 Blue dCi fuel pumpFuel system
- Engine / equipment
- 1.5 Blue dCi (K9K) in Dacia models
- Period mentioned
- 2018–2019
- Symptoms
- A continuous high-pitched whine inside the car, like a computer fan, that does not change when accelerating.
- Possible cause described
- According to Dacia's note to its dealers reported by L'argus, the noise comes from the fuel pump, whose tank pump-and-sender module was badly designed. The supplier modified it and the new part has been fitted at the factory since 30/9/2019.
- Check for the garage
- Check that the noise does not change with engine speed and ask the garage to listen around the fuel tank before replacing the turbo or the fan.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryApplies if: Only with a manual gearbox and built from October 2018 to February 2020.
Creaking when pressing the clutch caused by a non-conforming batch of slave cylindersTransmission
- Engine / equipment
- Dacia models with a manual gearbox
- Period mentioned
- 2018–2020
- Symptoms
- A creak or "crack" every time the clutch pedal is pressed; the gears engage normally.
- Possible cause described
- A non-conforming batch of clutch slave cylinders was fitted from 1/10/2018 to 7/1/2020 (TL4, TL6, TL8 and TLX gearboxes) or up to 10/2/2020 (JH3, JR5 and JXX). The Renault and Dacia technical note reported by L'argus says to replace it with a new part number, after comparing the noise with a recording from the brand. It is not a recall.
- Check for the garage
- Record the noise on your phone while pressing the clutch and show it to the garage, which compares it with the brand's recording before replacing the whole clutch.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryApplies if: Only the 1.5 Blue dCi built from 1/1/2019 to 31/7/2021.
AdBlue pump damaged by a non-conforming module sealExhaust and emissions (AdBlue)
- Engine / equipment
- 1.5 Blue dCi (K9K) in the Sandero II, Logan II, Duster II, Dokker and Lodgy
- Period mentioned
- 2019–2021
- Symptoms
- Engine and/or AdBlue warning light and a "refill AdBlue, no start in X km" message that keeps appearing even after refilling.
- Possible cause described
- The seal of the urea (AdBlue) pump module does not conform and ends up damaging the pump. It affects cars built from 1/1/2019 to 31/7/2021. Since June 2023, Dacia has run action 0E0K, which replaces the pump and its seal free of charge on cars under 5 years and 200,000 km, but only if the customer complains.
- Check for the garage
- If the warning stays after refilling AdBlue, do not wait for the countdown: ask the dealer for action 0E0K (urea pump and seal) before paying for other AdBlue repairs.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryApplies if: Only Euro 6b 1.5 dCi (not the later Blue dCi), if the symptoms began after the 2024 update.
Judder and flat spots when accelerating on Euro 6b 1.5 dCi and 1.6 dCi engines after the 2024 emissions updateExhaust and emissions
- Engine / equipment
- Renault and Dacia Euro 6b 1.5 dCi (K9K) and 1.6 dCi (R9M)
- Period mentioned
- Cars that received the NOx-reduction update of early 2024
- Symptoms
- After a visit to the dealer, flat spots when accelerating and judder at steady speeds; sometimes higher diesel consumption. On the Mégane IV and Kadjar the engine may start and then stall.
- Possible cause described
- In early 2024 Renault and Dacia updated these engines to cut nitrogen oxides (NOx) further. According to an internal Renault technical note from June 2024, updated in February 2025 and reported by L'argus, the flat spots and judder are mainly due to the new strategy widening the periods when the NOx trap is cleaned (regenerated); to do so the engine injects more diesel, which also explains the higher consumption.
- Check for the garage
- Ask a Renault or Dacia dealer for the new injection ECU reprogramming for these symptoms (Dacia has offered it since May 2024 and Renault since January 2025). It is not a recall with a letter: you have to ask for it. First have them rule out other causes (particulate filter, boost pressure sensor).
- Cost cited in the source
- No verified estimate: the note does not say whether the reprogramming is free; ask the dealer.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryApplies if: Weak points of this model from inspections, breakdown statistics and recalls; anything specific to one engine is stated in the sheet.
1.2 TCe chain, EDC gearbox and wiring on the Duster IIKnown weak points
- Engine / equipment
- Dacia Duster II (petrol, LPG and diesel)
- Period mentioned
- 2018–2024
- Symptoms
- A 1.2 TCe chain that stretches early (serious failure); an EDC gearbox that jerks or whose electronics fail, and a clutch that wears with city or towing use; at the roadworthiness test, steering joints and indicators.
- Possible cause described
- The 1.3 TCe, 1.6 SCe and 1.5 dCi have a reliable reputation; the ADAC ranks it near the top. A recall (KBA) for a wiring connection between engine and cabin that can disable airbags and drive: built 20/6/2023 to 11/7/2024.
- Check for the garage
- Check the wiring campaign by VIN; test the EDC in traffic; on the 1.2 TCe, listen to the chain.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryApplies if: Only cars built in 2023–2024 (campaign 0EFZ); the source does not give the generation. Confirm by VIN.
Airbags and drive fail at once because of a connector between the engine and the cabin (2023–2024 Duster)Electrical and electronic systems
- Engine / equipment
- Dacia Duster built in 2023–2024 (all versions)
- Period mentioned
- 2023–2024
- Symptoms
- Several systems fail at the same time, among them the airbags (airbag warning light) and the drive: the car may stop moving.
- Possible cause described
- A faulty cable connection between the engine and the driver's area. Dacia recalled 27,641 Duster built in 2023 and 2024 (campaign 0EFZ, German KBA reference 14486R, November 2024): the connector is checked and repaired if needed. The source does not give the generation, and both the Duster II and Duster III were built in that period.
- Check for the garage
- Check by VIN with Dacia whether the car is in campaign 0EFZ and whether it has been done. If the airbag light and other warnings come on together, or the car loses drive, do not carry on: call for assistance. The garage checks the connector between the engine and the cabin.
- Cost cited in the source
- Free under the recall.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryDacia Duster (II) 1.5 dCi / Blue dCi (K9K): known faults of the engine according to L'argusEngine
- Engine / equipment
- 1.5 dCi / Blue dCi (K9K) in the Dacia Duster (II)
- Period mentioned
- 2017–2024
- Symptoms
- [1.5 dCi] Injection light on (up to 30/01/2018); [1.5 dCi] Coolant leak (up to 08/11/2018); [1.5 dCi/Blue dCi] Oil seeping from the turbo air outlet pipe (up to 23/01/2019); [1.5 dCi/Blue dCi] Will not start (up to 25/03/2019); Engine jerking (up to May 2019); Engine warning light on (from 01/01/2017 to 10/12/2019); Engine whistle (from 01/01/2017 to 18/03/2019); "Check emissions system" message (from 01/05/2018 to 10/11/2019); Engine oil light on (from 01/01/2017 to 06/03/2020); Fuel pump whine in the cabin (from 01/07/2018 to 29/05/2020); Oil consumption (over 0.5 l per 1,000 km) on the K9K Gen8 (from 01/05/2018 to 14/03/2020); Wrong fuel level reading (from 23/10/2017 to 28/10/2020); OBD and/or SCR light on; AdBlue light on (from 01/01/2019 to 31/07/2021); OBD light on (up to 31/12/2022); Knocking in the engine bay (up to 06/09/2019); Various engine faults (up to 29/11/2021)
- Possible cause described
- According to the brand's technical notes reported by L'argus (each date shows up to when the affected cars were built): 1) [1.5 dCi] Injection light on (up to 30/01/2018): Particulate filter pipes to be cleaned or replaced. 2) [1.5 dCi] Coolant leak (up to 08/11/2018): Radiator hose. 3) [1.5 dCi/Blue dCi] Oil seeping from the turbo air outlet pipe (up to 23/01/2019): Seal or duct. 4) [1.5 dCi/Blue dCi] Will not start (up to 25/03/2019): Glow plugs and reprogramming. 5) Engine jerking (up to May 2019): Reprogramming. 6) Engine warning light on (from 01/01/2017 to 10/12/2019): Intake air pressure sensor. 7) Engine whistle (from 01/01/2017 to 18/03/2019): Accessory belt tensioner pulley. 8) "Check emissions system" message (from 01/05/2018 to 10/11/2019): Particulate filter differential pressure sensor. 9) Engine oil light on (from 01/01/2017 to 06/03/2020): Water/oil heat exchanger. 10) Fuel pump whine in the cabin (from 01/07/2018 to 29/05/2020): Injection control unit reprogramming. 11) Oil consumption (over 0.5 l per 1,000 km) on the K9K Gen8 (from 01/05/2018 to 14/03/2020): Injection control unit reprogramming or even engine replacement (brand coverage since 2022). 12) Wrong fuel level reading (from 23/10/2017 to 28/10/2020): Reprogramming. 13) OBD and/or SCR light on: Nitrogen oxide (NOx) sensors. 14) AdBlue light on (from 01/01/2019 to 31/07/2021): Urea pump module (covered up to 5 years or 200,000 km). 15) OBD light on (up to 31/12/2022): NOx sensor cleaning. 16) Knocking in the engine bay (up to 06/09/2019): Air filter box inlet duct. 17) Various engine faults (up to 29/11/2021): Engine wiring to be repaired.
- Check for the garage
- Compare your symptom and your car's build date with this list. If they match, tell the workshop and ask them to check that part first before replacing others. The brand or a warranty extension covers some repairs: ask the dealer with the car's details.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryDacia Duster (II): known faults of the gearbox and transmission according to L'argusGearbox
- Engine / equipment
- Dacia Duster (II), all engines
- Period mentioned
- 2017–2024
- Symptoms
- Gearbox noise on the 4x4 (up to 07/06/2018); Creak when pressing the clutch (up to 10/02/2020)
- Possible cause described
- According to the brand's technical notes reported by L'argus (each date shows up to when the affected cars were built): 1) Gearbox noise on the 4x4 (up to 07/06/2018): Transfer box output shaft. 2) Creak when pressing the clutch (up to 10/02/2020): Clutch slave cylinder.
- Check for the garage
- Compare your symptom and your car's build date with this list. If they match, tell the workshop and ask them to check that part first before replacing others. The brand or a warranty extension covers some repairs: ask the dealer with the car's details.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryDacia Duster (II): known faults of the chassis, steering and brakes according to L'argusSuspension and steering
- Engine / equipment
- Dacia Duster (II), all engines
- Period mentioned
- 2017–2024
- Symptoms
- Reduced steering assistance and loss of ESP (up to 22/06/2018); Noise when turning the steering wheel (up to 29/08/2018); Front axle noise on rough roads (up to 23/01/2019)
- Possible cause described
- According to the brand's technical notes reported by L'argus (each date shows up to when the affected cars were built): 1) Reduced steering assistance and loss of ESP (up to 22/06/2018): Reprogramming. 2) Noise when turning the steering wheel (up to 29/08/2018): Floor modification or steering rack. 3) Front axle noise on rough roads (up to 23/01/2019): Suspension spring protector.
- Check for the garage
- Compare your symptom and your car's build date with this list. If they match, tell the workshop and ask them to check that part first before replacing others. The brand or a warranty extension covers some repairs: ask the dealer with the car's details.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryDacia Duster (II): known faults of the electronics and interior according to L'argusElectrical and electronic systems
- Engine / equipment
- Dacia Duster (II), all engines
- Period mentioned
- 2017–2024
- Symptoms
- Wrong temperature display on automatic climate control (up to 04/06/2018); Manual air conditioning control faults (up to 27/09/2018); Media Nav bugs (up to 28/12/2018); Water gets into the cabin through the roof bars; Ventilation fault (manual air conditioning); Easy Link screen black (from 01/11/2021 to 08/02/2022); Play in the driver's seat frame (up to 23/12/2020); Headlining rattle (up to 06/02/2019)
- Possible cause described
- According to the brand's technical notes reported by L'argus (each date shows up to when the affected cars were built): 1) Wrong temperature display on automatic climate control (up to 04/06/2018): Control panel. 2) Manual air conditioning control faults (up to 27/09/2018): Secure the control cables. 3) Media Nav bugs (up to 28/12/2018): Reprogramming. 4) Water gets into the cabin through the roof bars: To be repaired. 5) Ventilation fault (manual air conditioning): Blower motor resistor. 6) Easy Link screen black (from 01/11/2021 to 08/02/2022): Reprogramming or radio unit replacement. 7) Play in the driver's seat frame (up to 23/12/2020): Frame to be replaced. 8) Headlining rattle (up to 06/02/2019): Fit foam pads.
- Check for the garage
- Compare your symptom and your car's build date with this list. If they match, tell the workshop and ask them to check that part first before replacing others. The brand or a warranty extension covers some repairs: ask the dealer with the car's details.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryDacia Duster (II): known faults of the body according to L'argusBodywork
- Engine / equipment
- Dacia Duster (II), all engines
- Period mentioned
- 2017–2024
- Symptoms
- Fuel flap will not open (up to 30/10/2019)
- Possible cause described
- According to the brand's technical notes reported by L'argus (each date shows up to when the affected cars were built): 1) Fuel flap will not open (up to 30/10/2019): To be rectified.
- Check for the garage
- Compare your symptom and your car's build date with this list. If they match, tell the workshop and ask them to check that part first before replacing others. The brand or a warranty extension covers some repairs: ask the dealer with the car's details.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryClogged particulate filter on the 1.5 dCiExhaust and emissions
- Engine / equipment
- 1.5 dCi (K9K) with particulate filter
- Period mentioned
- 2010 onwards
- Symptoms
- Particulate-filter or emissions warning, limp mode with loss of power and frequent regenerations.
- Possible cause described
- The filter clogs, especially on cars that mostly make short town trips and never complete a regeneration.
- Check for the garage
- Read the soot load with a diagnostic tool, run a forced regeneration at the garage and check the differential-pressure sensors and EGR. Make long road trips now and then.
- Cost cited in the source
- No verified estimate; from a regeneration to replacing the filter.A rough figure from the original database, not an up-to-date quote.
Sources from the original database
View full entryOther engines of the Dacia Duster (II)
- 1.6 SCe (H4M)Petrol
- 1.2 TCe (H5Ft)Petrol
- 1.0 TCe (H4Dt)Petrol
- 1.3 TCe (H5Ht)Petrol
- 1.0 TCe ECO-G (GLP)LPG / CNG
- All known faults for the Dacia Duster (II)