Question about 1998 Ford Expedition

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I have a ford1998 expedition 4x4 5.4 and the only code is a1000 what is the problem please help

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  • Ford Master
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Hi Anna , How's the truck run ? no problems ? This code just means someone had the battery disconnected or cleared the keep alive memory !
P1000 - Monitor Testing Not Complete The on board diagnostic II (OBD II) monitors are performed during the OBD II Drive Cycle. The DTC will be stored in continuous memory if any of the OBD II monitors do not complete.

  • Vehicle is new from the factory
  • Battery or PCM had recently been disconnected
  • An OBD II monitor failure had occurred before completion of an OBD II drive cycle
  • PCM DTCs have recently been cleared with a scan tool
  • PTO circuit is shorted to VPWR or B+ or PTO is on during testing
The DTC does not need to be cleared from the PCM except to pass an inspection/maintenance

Posted on Apr 06, 2015

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  • Ford Master
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My info shows it having something to do with the fuel pump. Hope this helps.

Posted on Apr 06, 2015

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