OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

Oxygen Sensor Plausibility Measurement (P2A00) Evaluation Ranges and Allowable Deviations:Range 1 Range 2 OverrunMinimum Maximum Minimum Maximum Minimum MaximumEngine speed (rpm) 1200 2500 1200 2000 100 4000Fuel injection quantity (mg/stroke) 20 38 12 19.5 0 0.5Air mass (mg/stroke) 400 730 400 700 100 1000Allowable deviation (% O2) -5.1 6.3 -6.2 7.9 -4.6 6.3NOx Sensor Operation ModesDrive startDrive endEngine OFFEngine OFFEngine ONEngine OFFEngine OFFKey-OFF-Key-ON-Heater OFFNA ModeVs No ActiveNA ModeVs ActiveKey-ONA Modeunder FLOA ModeAfter FLOA Mode & F/CKey OFFSelf Shut DownKey-OFF-Failure occurred timing12:In case of normal9:In case of engine stall345678101Mode 1 – No voltage supply to module or sensor. Non-operational.Mode 2 – Voltage is supplied to module, voltage is not supplied to the sensor.Mode 3 – Voltage is supplied to module, voltage is not supplied to the sensor. Dew-point waiting period.Mode 4 – Voltage is supplied to the module and to the sensor. The Vs cell of the sensor is not active.Mode 5 – Voltage is supplied to the module and to the sensor. The Vs cell of the sensor is active.Mode 6 – Voltage is supplied to the module and to the sensor. Sensor is in fast light-off to quickly heatsensing element to operational temperature.Mode 7 – Voltage is supplied to the module and to the sensor. The sensor has exited fast light-off and O2and NOx will be available during this mode.Mode 8 - Voltage is supplied to the module and to the sensor. The sensor has exited fast light-off and O2and NOx will be available during this mode. During this mode a fuel cut condition is present, ascommunicated by the PCM.Mode 9 - Voltage is supplied to module, yet voltage is not supplied to the sensor.Mode 10 - No voltage supply to module or sensor. Non-operational.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 43 OF 157