EGR valve carbon buildup and failure
Often reportedCarbon buildup in the EGR valve causes exhaust smoke, unpleasant emissions, and rough engine operation. Cleaning or temporarily disabling it improves symptoms.
Engine Bay
When buying a used 2015 Toyota Avensis 2.2 D, the most frequently mentioned issue is EGR valve carbon buildup and failure. Additionally, head gasket failure and fluid mixing are also commonly reported.
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
Carbon buildup in the EGR valve causes exhaust smoke, unpleasant emissions, and rough engine operation. Cleaning or temporarily disabling it improves symptoms.
Engine Bay
In diesel versions, cases of damaged or blown head gaskets due to excessive back pressure from clogged DPF and carbon deposits are recurring. Owners report coolant loss, white smoke, and worsening symptoms at high RPM.
Engine Internal
Incomplete or failed DPF regenerations are commonly reported, especially in city or short-distance driving. Users report white smoke/burnt oil smell, power loss, limp mode, and high costs.
Exhaust Emissions
Injectors are reported to cause white/black smoke and loss of engine smoothness due to faulty combustion; some users note that injector replacement or calibration improves symptoms.
Fuel System
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.