SSM 46479

SOME 2017 F-SUPER DUTY VEHICLES EQUIPPED WITH A 6.7L ENGINE MAY EXHIBIT AN ILLUMINATED MIL WITH DTC P259F ONLY. IF FREEZE FRAME DATA INDICATES THE DTC OCCURRED WHEN ENGINE COOLANT TEMPERATURE (ECT) WAS BELOW 10 DEGREES C (50 DEGREES F) AND UNDER 3 MINUTES OF ENGINE RUN TIME, CLEAR THE DTC AND PERFORM A KEY ON ENGINE RUNNING (KOER) SELF TEST USING THE INTEGRATED DIAGNOSTIC SYSTEM (IDS) OR EQUIVALENT SCAN TOOL. IF NO TURBOCHARGER AND CHARGE AIR COOLER (CAC) SYSTEM DTCS RETURN DURING KOER SELF TEST, DO NOT ATTEMPT ANY REPAIRS AT THIS TIME AND RELEASE THE VEHICLE. ENGINEERING IS CURRENTLY INVESTIGATING THIS CONCERN, MONITOR OASIS FOR UPDATES REGARDING LATEST INFORMATION AND DIAGNOSTIC DIRECTION.