2001 Ford Explorer ChassisFACTORY OEM SERVICE PROCEDURE

Transfer Case

TRANSFER CASE DIAGNOSTIC TROUBLE CODES (DTC) IDENTIFICATION (44-05)

DTC Description Test
B1342 GEM/CTM Defective Clear DTCs and retest system. If DTC B1342 is still present, replace GEM.
B1483 Brake Pedal Input Circuit Failure B
B1485 Brake Pedal Input Circuit Short To Power B
B2105 Throttle Position Input Out Of Range Low A
B2106 Throttle Position Input Out Of Range High A
B2141 NVM Configuration Failure Vehicle speed calibration data is not programmed into the GEM/CTM. REFER to the scan tool help screen on the configuration card to program the tire size and axle ratio. TEST the system for normal operation. If DTC B2141 is still present, replace the GEM/CTM.
P0500 VSS Signal Circuit B
P1804 4WD High Indicator Open/Short To Ground C
P1806 4WD High Indicator Short To Power C
P1808 4WD Low Indicator Open/Short To Ground C
P1810 4WD Low Indicator Short To Power C
P1812 4WD Mode Select Switch Open/Short To Ground A
P1815 4WD Mode Select Switch Short To Power A
P1820 T/C LO-To-HI Shift Relay Open/Short To Ground B
P1822 T/C LO-To-HI Shift Relay Coil Short To Power B
P1824 4WD Clutch Relay Circuit Failure A
P1826 4WD Clutch Relay Short To Power A
P1828 T/C Shift Relay Circuit Failure B
P1830 T/C Shift Relay Coil Short To Power B
P1836 Front Drive Shaft Speed Sensor Circuit B
P1837 Rear Drive Shaft Speed Sensor Circuit B
P1838 T/C Shift Motor Circuit Failure B
P1846 T/C Contact Plate "A" Open Circuit B
P1850 T/C Contact Plate "B" Open Circuit B
P1854 T/C Contact Plate "C" Open Circuit B
P1858 T/C Contact Plate "D" Open Circuit B
P1866 T/C System Concern B
P1867 T/C Contact Plate General Circuit Failure B
P1874 Hall Effect Sensor Power Circuit Failure B
P1875 Hall Effect Sensor Power Circuit Short B
P1891 T/C Contact Plate Ground Return Open Circuit B
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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