OBD Operation Summary for Fiesta - MotorCraftService.com

Misfire Monitor Operation:DTCsMonitor executionMonitor SequenceSensors OKMonitoring DurationP0300 (general misfire),P0301 P0302, P0303, P0304 (specific cylinder misfire)P315 (profile adaption values at limit)Continuous, misfire rate calculated every 200 or 1000 revs after start:(after 2 crankshaft revolutions)NoneCKP(P0335, P0336), BARO (P2227, P2228, P2229), TPS (P0122,P0123, P0222, P0223), ECTEntire driving cycle (see disablement conditions below)Typical misfire monitor entry conditions:Entry condition Minimum MaximumTime since engine start-upEngine loadRPM Range (2 revs after exceeding 150 rpmbelow “drive” idle rpm)Engine Coolant Temperature -7 °CDecel Fuel Cut OffBARO+2 crankshaft revolutions> zero load line; all positive torque range550 rpm 6000 rpmNot active75 kPaFuel tank level 5 %Maximum engine speed threshold target wheeladaptationMinimum engine speed threshold for targetwheel adaptation40002688Typical misfire temporary disablement conditions:Fuel shut-off due to vehicle-speed limiting or engine-rpm limiting modeNot during torque interventions by traction controlHigh rate of change of torque (heavy throttle tip-in or tip out), > 503.8.to .949.0 deg/secHigh rate of change of MAF ((heavy throttle tip-in or tip out), > 35 to 40 mg/strokeTypical misfire monitor malfunction thresholds:Type A (catalyst damaging misfire rate): ≥ 5 %Type B (emission threshold rate): ≥1%Segment Adaptation values at the limit (Adaptation Tolerance): 6.3%Signal Implausible / Missing/ Adding 1 tooth or more (Incorrect number of teeth per rotation):CONTINENTAL REVISED: SEPTEMBER 17, 2010 PAGE 12 OF 111