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2006 vw gti 2.0l turbo, customer concern is a check engine light, no apparent drivability concerns or complaints, p2293 fuel psi reg performance (lower limit reached) fault stored, although the fault stored states that it is intermittent, it is a very common issue on this engine for the cam follower to wear (due to low oil level or lack of maintenance) and cause the high pressure fuel pump shaft to wear into the camshaft lobe that drives the pump which in turn will cause a lowfuel pressure issue under certain conditions (under load), this video shows an easy way to check fuel pressures using a scantool (mvbs 103 and 106), and (N276) fuel pressure regulator control using a low amp probe. you must be safe and careful when dealing with GDI systems, high amperage, voltage and fuel pressures safety glasses are a must! hope you enjoy.