NHTSA ID Number: 10168771 Manufacturer Communication Number: SSM 48300 Summary Some 2017-2019 F-Super Duty 4×4 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) ... Read more

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SSM 46455 – 2017 F-Super Duty – 6.7L – 4×4 Indicator Light Remains On – Diagnostic Trouble Code (DTC) P1839 In Transfer Case Control Module (TCCM) Some 2017 F-Super Duty vehicles equipped with electronic shift on the fly (ESOF) four wheel drive may exhibit a 4×4 indicator illuminated with DTC P1839 in the TCCM.   ... Read more

The post 4×4 Indicator Light Remains On – Diagnostic Trouble Code (DTC) P1839 – 2017 Ford F-Super Duty first appeard on Ford & Lincoln - OEMDTC and is written by oemdtc