Crank Sensor O-Ring Issue for Ford
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.