F 150 Super Crew 4WD V8-4.6L SOHC VIN 6 (2003)
P1865 - P1869: Testing and Inspection
P1866
Electronic Shift on the Fly (ESOF)
For diagnosis of code P1866 refer to chart
Part 4 Of 4
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, follow this link: See: Transmission and Drivetrain/Transfer Case/Testing and Inspection
Manual Shift on the Fly (MSOF)