F 550 2WD Super Duty V10-6.8L VIN Z Bi-Fuel (2001)
P1835 - P1839: Testing and Inspection
P1838 is an information code (there is no testing for this code).
Code Description: Transmission Transfer Case Shift Motor Circuit Failure.
Refer to wiring diagrams to diagnose this circuit,
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: