Lancia Ypsilon (846) of 2014 0.9 TWINAIR CNG 63KW with CCM MARELLI 8GSF, error in diagnosis P0244 Solenoid valve overboost, the car does not go into protection and the warning light by itself sometimes goes off and then comes back on, in any case the error is always P0244. In 2016 at 42600Km the turbo compressor was replaced under warranty with various gaskets always for this reason, in 2018 at 89000Km the turbo compressor was replaced always under warranty by an authorized Lancia workshop. Now at a distance of 15000Km the same problem has reoccurred. I await news about this .