Coolant temperature warning light / faulty sensor
Often reportedUsers report the coolant temperature warning light illuminating intermittently or prematurely without actual overheating; this is likely due to a faulty sensor.
Cooling
When buying a used Dacia Logan 1.5 d 2012 (1st generation / facelift), the most frequently mentioned issue is: Coolant temperature warning light / faulty sensor. Also, a clogged or faulty EGR valve is commonly reported.
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
Users report the coolant temperature warning light illuminating intermittently or prematurely without actual overheating; this is likely due to a faulty sensor.
Cooling
Users of the 1.5 dCi engine report uneven power delivery and jerking due to a dirty/clogged EGR valve or its electronic management. Carbon buildup can cause the valve to stick or give incorrect readings, triggering the check engine light.
Exhaust Emissions
Commonly reported on Italian forums, the 1.5 dCi 75 HP engine experiences sudden power drops (engine 'sits') often accompanied by the check engine light and codes like 'high rail pressure'. Symptoms are intermittent: sometimes the vehicle recovers after stopping and restarting or shifting to neutral.
Fuel System
Reports document turbocharger issues with abnormal noises, grey/black exhaust smoke, and subsequent total power loss; this is consistent with bearing wear or oil seal leaks.
Turbo
Same trim, different year
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.