Expedition 4WD V8-5.4L SOHC VIN 5 (2005)
P1855 - P1859: Testing and Inspection
For diagnosis of code P1857, refer to chart:
If there is no link in the chart then:
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This code is not a valid code for this vehicle
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Or information published by the manufacturer for this vehicle did not include this code
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For complete diagnosis of the Transfer Case system, follow this link: See: Transmission and Drivetrain/Transfer Case/Testing and Inspection