P1839 · Comunicados do fabricante

FORD · 2019-11-01

Some 2017-2019 F-Super Duty 4x4 vehicles may exhibit an inoperative transfer case function with various diagnostic trouble codes (DTCs), including but not limited to P1839, P1867, P1861, P1891, P1841, U0102. If normal diagnosis leads to shift motor as the cause, first disconnect transfer case control module (TCCM) connector C2371A, and inline connectors C1010 (diesel) or C145 (gasoline) as well as transfer case connector C350. Inspect for loose pins, contamination and broken wires and repair as necessary. If nothing is found, reconnect and test 4x4 operation.

FORD · 2017-03-14

SOME 2017 F-SUPER DUTY VEHICLES EQUIPPED WITH ELECTRONIC SHIFT ON THE FLY (ESOF) FOUR WHEEL DRIVE MAY EXHIBIT A 4X4 INDICATOR ILLUMINATED WITH DTC P1839 IN THE TCCM. THIS MAY BE CAUSED BY A BACKED OUT OR LOOSE PIN FOR CIRCUIT CCF07 BN-GN AT C1010 WHICH IS LOCATED BY THE DRIVER SIDE FENDER. BEFORE ATTEMPTING DIAGNOSIS OR REPAIRS, INSPECT PIN 16 IN CONNECTOR C1010. IF NO CONCERN IS FOUND, REFER TO WORKSHOP MANUAL (WSM), SECTION 308-07 FOR NORMAL DIAGNOSTICS.