You might also see a rough engine operation and bad fuel economy. If the N80 valve is not functioning properly the engine can alarm you by displaying the check engine light on the dashboard. The surplus fuel vapors are sucked out by the EVAP system to be disposed of. The N80 valve is necessary for managing the fuel vapors that get left in the combustion chamber. Many owners report excessive wear of front tires and front suspension parts.A symptom of bad ignition coils are misfires, check engine light, rough idling etc. These usually fail due to normal wear but they do fail faster if the engine has been remapped or in other way modified. A common minor fault of all engines in the lineup are failing ignition coils.When buying these engines make sure there is no rattle at the startup and ask the seller about the previous timing chain maintenance. You can read more about the situation here. Some of these problems arise quickly (as soon as 20,000 miles). The CC and its 1.4TSI, 1.8TSI and 2.0TSI engines were all prone to the failing timing chain tensioners and timing chains.Make sure that the vehicle has had all the transmission maintenance done. Some gearboxes also fail completely if the damage and maintenance is neglected. Many owners experience early transmission clutch wear (there are two “wet” clutches). When buying a Volkswagen CC with the dual-clutch DSG transmission make sure it works as it should! Many of these cars are sold when bigger transmission issues arise.There was also a class action lawsuit against the VAG group for this exact problem. The housing of the water pump is entirely made out of plastic which under pressure and heat cracks and leaks. Like with the Audi A4 B8 we talked about before, the 2.0TDI diesel engines in the Volkswagen CC suffer from a leaky water pump.Once the high-pressure fuel pump starts failing you might see the engine stutter, overheat or even go into limp mode. Direct injection engines need a stream of high pressurized fuel in order to operate properly. Listing the common failures of the High-Pressure Fuel Pump as a major fault is reasonable as it will leave you stranded by the side of the road.
#Top reasons 2011 volkswagen cc check engine light professional#
The problems are recognized with professional diagnostics (P2015 fault code) and by random engine misfires and rough idling. The intake manifolds on these engines mainly failed due to the faulty flap position sensors. This should not happen as most cars live their whole lives with their first intake manifold. The 2.0T turbo petrol engines, offered both in Europe and USA are prone to intake manifold failures.Volkswagen CC Common Problems and Major Faults
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