F 350 2WD Super Duty V8-6.0L DSL Turbo VIN P (2004)
Malfunction Indicator Lamp: Description and Operation
MALFUNCTION INDICATOR LAMP (MIL)
Malfunction Indicator Lamp (MIL)
The malfunction indicator lamp (MIL) informs the driver that the PCM has detected an OBD emission-related component or system fault. When this
occurs on a California calibrated engine, an OBD DTC will be set. On a federal calibrated engine and transmission, certain faults will also illuminate the
MIL.
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On all vehicles, the MIL is located in the instrument cluster.
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The indicator is illuminated by a PCM message sent through the standard corporate protocol (SCP) communications network to the instrument
cluster.
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An engine or transmission with federal calibration operating in the failure mode effects management (FMEM) will cause the MIL to be
Illuminated.
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To turn off the MIL after a repair, a clear DTCs command from the scan tool must be sent to the PCM.
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For any MIL concern, go to Symptom Charts. See: Testing and Inspection/Symptom Related Diagnostic Procedures/Diesel Models/Symptom
Charts