U0989 DTC For Alfa Romeo Montreal

Your Alfa Romeo Montreal engine control system detects a problem, the computer stores the diagnostic trouble code U0989 in its memory. To figure out what is wrong with your vehicle you must first extract the U0989 DTC For Alfa Romeo Montreal.

On 1999 and later U0989 Alfa Romeo Montreal engines, the instrument cluster has a built-in self-diagnostic mode that can be accessed by pressing and holding the instrument cluster SELECT/RESET button. Insert the ignition key and turn to the RUN position (but don't crank or start engine). Continue to press and hold the SELECT/RESET button (for 5 seconds) until the word TEST is displayed by the odometer. Release the SELECT/RESET button within three seconds after the word TEST is displayed to begin the self-diagnostic mode.

There are currently two main types of cylinder deactivation used today, depending on the type of engine. U0989 Alfa Romeo Montreal 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.

U0988 DTC (Previous DTC Code)

( Next DTC Code ) U0990 DTC

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