F 350 4WD Super Duty V10-6.8L VIN V (2005)
P1800 - P1804: Testing and Inspection
P1804
For diagnosis of code P1804, refer to chart:
B1317-P1808
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