P1678 DTC For Porsche 911 Type 991

Your Porsche 911 Type 991 engine control system detects a problem, the computer stores the diagnostic trouble code P1678 in its memory. To figure out what is wrong with your vehicle you must first extract the P1678 DTC For Porsche 911 Type 991.

To solve P1678 Porsche 911 Type 991 problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

There are currently two main types of cylinder deactivation used today, depending on the type of engine. P1678 Porsche 911 Type 991 code for the pushrod design which uses solenoids to alter the oil pressure delivered to the lifters. In their collapsed state, the lifters are unable to elevate their companion pushrods under the valve rocker arms, resulting in valves that cannot be actuated and remain closed.

P1677 DTC (Previous DTC Code)

( Next DTC Code ) P1679 DTC

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The listed Porsche models will give information about P1678 DTC.

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