Hello Volvo screwdriver, I need your advice or help: Volvo S60, 2,4l, 140hp, 5 cylinders, suction cup (no turbo), 2003, approx. 190,000 km. Read out the error memory returned: 640A. Can a faulty camshaft adjustment on the inlet side prevent the engine start? Do you have any experience in this regard? Thank you for the support in advance! Best regards Klaus