John Deere 1872.03 – SCO: Front Hitch Position Sensor Circuit Supply Voltage High

Indicates that the 5-volt supply voltage to the front hitch position sensor is reading higher than the acceptable threshold, or there is a short-to-voltage condition within the sensor's circuit.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 7200R
• 7210R
• 7215R
• 7230R
• 7250R
• 7260R
• 7270R
• 7290R
• 7310R
• 8225R
• 8245R
• 8270R
• 8295R
• 8320R
• 8335R
• 8345R
• 8370R
• 8400R

1. 1

   Check the wiring harness and connectors running from the Front Chassis Module (SCO) to the Front Hitch Position Sensor for physical damage, pinched wires, or corrosion.

2. 2

   Perform the SCO—Front Hitch Position Sensor Circuit Test to check for continuity and specifically check for a short circuit to a voltage source in the sensor wiring.

3. 3

   Verify the reference voltage at the sensor connector to ensure the module is outputting the correct 5V supply and that it is not being spiked by a short.

1. 1

   Isolate the Fault

   Disconnect the Front Hitch Position Sensor. If the voltage on the signal wire drops to normal/zero, the sensor itself has an internal short and must be replaced. If the voltage remains high, the wiring harness is shorted to power and must be repaired.

2. 2

   Repair/Replace

   Repair the damaged section of the wiring harness, or replace the faulty Front Hitch Position Sensor.

3. 3

   Clear Codes

   Resolve or erase all hitch-related fault codes from the SCO module.

4. 4

   Recalibrate

   Perform a Front Hitch Position Sensor Calibration via the cab display or service tool so the module can learn the new stored calibration values for the hitch's full range of motion.