Some 2018 Mustang equipped with 5.0L engines and F-150 equipped with 2.7L, 3.3L, 3.5L and 5.0L engines may exhibit illuminated Malfunction Indicator Light(MIL) with Diagnostic Trouble Code P0181(Fuel Temperature Sensor A Circuit Range/Performance) stored in Powertrain Control Module(PCM) memory. DTC may set if Key On Engine Running(KOER) diagnostic routine is performed with cold fuel(Below 50F/10C) in vehicle fuel tank. Refer to the Powertrain Control/Emissions Diagnosis(PC/ED) Pin Point Test DD for normal diagnostics. If unable to determine root cause, do not replace fuel pressure/temperature sensor or Powertrain Control Module(PCM). Engineering is investigating, monitor OASIS for updates.
