The Best Check Engine Light On After Head Gasket Repair 2023. After the job was done the mechanic said the service engine light came on with an error code p0335 ( crank shaft sensor ). Web furthermore, the check engine light will be on or flashing, the car will stutter when accelerating, shake while idling, and have overall poor performance and fuel economy.

Sometimes, though, it could indicate a more serious problem. You’ll also want to make sure that your head gasket is of a high quality and properly installed/sealed. Look for a high engine temperature.
