Subaru recalls Impreza, Crosstrek, vows to replace damaged engines

The PCV valve may disintegrate, allowing debris to enter the engine.

Subaru has launched a recall for certain 2017-2018 Impreza and 2018 Crosstrek vehicles to replace a defective positive crankcase ventilation valve.

The company received its first report of trouble in 2017 when an owner experienced engine vibration and observed oil smoke in the tailpipe exhaust. The issue was traced to the PCV valve, which had separated.
After changing the PCV valve case from aluminum to steel for vehicles built beginning in January 2018, the company identified a report claiming failure of the aluminum valve had caused loss of motive power. The problem was consequently elevated to a safety defect.
Subaru dealers will inspect all recalled vehicles and replace the PCV valve. If the existing valve has already failed and the separated components cannot be found in the oil pan, the entire engine will be replaced.

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