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Crank Sensor O-Ring Issue for Ford

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An example of crankshaft position sensor (CKP) sensor (left with no O-ring; middle with standard O-ring; right with added orange O-ring).

Some 2011-2014 Ford Mustang vehicles equipped with a 5.0L engine and built on or before May 1, 2013, may exhibit a warning light on, with any combination of diagnostic trouble codes (DTCs) P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 and/or P0316. There will be no other DTCs or driveability symptoms present.

Using the integrated dynamics system (IDS), perform a self-test on the powertrain control module (PCM) to check for both key-on engine off (KOEO)  and key on, engine running (KOER) DTCs. If any of the afore-mentioned DTCs are present in KEOE and no driveability concerns are present, remove the crankshaft position sensor (CKP) and install an O-ring on the crankshaft position sensor (CKP) sensor.

Using IDS, clear DTCs and perform misfire monitor neutral profile correction. 

The O-ring is available as P/N FOPZ-9229-A.

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