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Home >> Ford >> 2004 >> Mustang Mach 1, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster System >> Diagnosis And Testing >> Instrument Cluster >> Gauge Indication Systems >> SERVICE ENGINE SOON Indicator

SERVICE ENGINE SOON Indicator

The SERVICE ENGINE SOON indicator receives its signal from the PCM over the SCP network. If the instrument cluster does not receive a message from the PCM within 5 seconds, the instrument cluster illuminates the SERVICE ENGINE SOON indicator and log a diagnostic trouble code (DTC).