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Home >> Cadillac >> 1993 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Tests W/Codes - Pcm >> Pcm Code Charts >> Pcm Code P019 - Shorted Fuel Pump Feedback Signal >> Notes
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Pcm Code P019 - Shorted Fuel Pump Feedback Signal: Notes

PCM monitors fuel pump feedback voltage for 4 seconds after ignition is turned on without engine being cranked. Fuel pump relay will be energized for 2 seconds and then de-energized. If voltage on fuel pump feedback does not drop to less than 7 volts during first 4 seconds after ignition is turned on (engine off), PCM Code P019 will set, indicating voltage on circuit No. 120 with fuel pump relay de-energized.