B3872 DTC For Porsche 911 Type 991

Your Porsche 911 Type 991 engine control system detects a problem, the computer stores the diagnostic trouble code B3872 in its memory. To figure out what is wrong with your vehicle you must first extract the B3872 DTC For Porsche 911 Type 991.

On 1999 and later B3872 Porsche 911 Type 991 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.

The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. B3872 Porsche 911 Type 991 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired.

B3871 DTC (Previous DTC Code)

( Next DTC Code ) B3873 DTC

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