The HCC should provide the tractor operator with controls to set, adjust and move the hitch based on the desired operation to be performed.
– Rear hitch control lever sensor
– Rear hitch rate-of-drop control
– Rear hitch height limit control
– Rear hitch load/depth control
– Rear hitch external raise/lower switch
– Transport lock touch switch
– Rear hitch lower set touch switch
– Rear hitch slip response control
– CommandCenter™
John Deere HCC fault codes / John Deere HCC diagnostic trouble codes
NOTE:This page only indicates the meaning of the fault codes. For complete troubleshooting information, see the technical manuals.
HCC 000158.04 (HCC 158.04) — HCC Switched Supply Voltage Low
Code Caused By: Switched supply voltage to Hitch Control Unit (HCC) below 9.0 V.
Associated Codes: This code and other 000158.XX codes may be present in other control units. Since Vehicle Load Center (VLC) control unit wake-up circuit is voltage source, perform VLC code diagnostics first.
Control Unit Response: Function Disabled (OFF)
HCC 000168.04 (HCC 168.04) — HCC Unswitched Supply Voltage Low
Code Caused By: Unswitched supply voltage to Hitch Control Unit (HCC) below 9.0 V.
Control Unit Response: Function Disabled (OFF)
HCC 000190.02 (HCC 190.02) — Rear Hitch Calibration Fault/Engine Speed Low
Code Caused By: Rear Hitch Raise Limit was calibrated with engine speed below 1800 rpm.
NOTE: This code may be operator/technician induced.
Control Unit Response: Indicator/Alarm Only
HCC 000629.12 (HCC 000629.12) — HCC Control Unit Fault
Code Caused By: Hitch Control Unit (HCC) software failed to execute in allotted time.
Control Unit Response: Function Disabled (OFF)
HCC 000630.13 (HCC 630.13) — HCC Calibration Fault/Not Calibrated
Code Caused By: Hitch Control Unit (HCC) has never been calibrated or a failed calibration was saved.
Control Unit Response: Indicator/Alarm Only
HCC 001079.03 (HCC 1079.03)— HCC Sensor Supply Voltage High
Code Caused By: Hitch Control Unit (HCC) sensor supply voltage above 5.25 V.
Control Unit Response: Function Degraded
HCC 001079.04 (HCC 1079.04) — HCC Sensor Supply Voltage Low
Code Caused By: Hitch Control Unit (HCC) sensor supply voltage below 4.65 V.
Control Unit Response: Function Disabled (OFF)
HCC 001638.02 (HCC 1638.02) — HCC Calibration Fault/Hydraulic Oil Temperature Low
Code Caused By: Hitch Control Unit (HCC) was calibrated with hydraulic oil temperature below 50° C (122° F).
Control Unit Response: Indicator/Alarm Only
HCC 001873.02 (HCC 1873.02) — Rear Hitch Position Sensor Circuit Voltage Fault
Code Caused By: Rear Hitch Position Sensor may be damaged or need calibration.
Control Unit Response: Function Degraded
HCC 001873.03 (HCC 1873.03) — Rear Hitch Position Sensor Circuit Voltage High
Code Caused By: Rear hitch position sensor voltage out of range high. Sensor voltage is above 4.75 V.
Control Unit Response: Function Degraded
HCC 001873.04 (HCC 1873.04) — Rear Hitch Position Sensor Circuit Voltage Low
Code Caused By: Rear hitch position sensor voltage out of range low. Sensor voltage is below 0.25 V.
Control Unit Response: Function Degraded
HCC 001873.11 (HCC 1873.11) — Rear Hitch Position Restricted During Calibration
Code Caused By: Rear hitch calibration did not see a big enough difference between the lower and upper limit of the rear hitch position.
Control Unit Response: Function Degraded
HCC 001873.13 (HCC 1873.13) — HCC Calibration Fault/Rear Hitch Position Sensor Circuit
Code Caused By: Rear Hitch Position Sensor requires calibration. A failure to calibrate or an unsuccessful calibration may cause this code to be stored.
Control Unit Response: Function Degraded
HCC 001881.03 (HCC 1881.03) — Rear Hitch Draft Sensor Circuit Voltage High
Code Caused By: Rear Hitch Draft Sensor voltage above 5.35 V.
Control Unit Response: Function Degraded
HCC 001881.04 (HCC 1881.04) — Rear Hitch Draft Sensor Circuit Voltage Low
Code Caused By: Rear Hitch Draft Sensor voltage is below 0.20 V.
Control Unit Response: Function Degraded
HCC 001881.13 (HCC 1881.13) — HCC Calibration Fault/Rear Hitch Draft Sensor Circuit
Code Caused By: Rear Hitch Draft Sensor requires calibration. A failure to calibrate or an unsuccessful calibration may cause this code to be stored. Draft sensor voltage without load is out of range (1.90—2.40 V).
Control Unit Response: Function Degraded
HCC 002005.09 (HCC 2005.09) — ACU Message Missing
Code Caused By: Hitch Control Unit (HCC) not receiving required messages from the ACU.
Control Unit Response: Function Disabled (OFF)
HCC 002071.09 (HCC 2071.09) — CCU Message Missing
Code Caused By: Hitch Control Unit (HCC) not receiving required speed messages from the CCU.
Control Unit Response: Function Degraded
HCC 002139.09 (HCC 2139.09) — CSM Message Missing
Code Caused By: Hitch Control Unit (HCC) not receiving required speed messages from the CSM.
Control Unit Response: Function Degraded
HCC 002152.09 (HCC 2152.09) — HV I Message Missing
Code Caused By: Hitch Control Unit (HCC) not receiving required hitch control valve (HV I) message.
Control Unit Response: Function Disabled (OFF)
HCC 002602.18 (HCC 2602.18) — Hydraulic Oil Level Low
Code Caused By: Hydraulic oil level is low.
Control Unit Response: Function Disabled (OFF)
HCC 521000.02 — Rear Hitch External Switch Circuit Fault
Code Caused By: Rear Hitch External Switch failure.
Control Unit Response: Function Degraded
HCC 521000.31 — Rear Hitch External Switch Circuit Conflict
Code Caused By: Both raise and lower switches were activated at the same time.
Control Unit Response: Function Degraded
HCC 521001.02 — HCC Calibration Fault/Rear Hitch Pressure Valve Gain
Code Caused By: Unsuccessful Rear Hitch Raise Valve maximum current calibration.
Control Unit Response: Function Disabled (OFF)
HCC 523652.02 — Wire Connector Fault/Incompatible Harness Location
Code Caused By: Deluxe Hydraulic Control Unit is plugged into wrong harness connectors.
Control Unit Response: Function Disabled (OFF)
HCC 523788.02 — Hydraulic Option Configuration Changed Since Power-up
Code Caused By: Option pin configuration for optional hitch features has changed since last power up.
Control Unit Response: Function Disabled (OFF)
HCC 523788.14 — Hydraulic Option Configuration Change Not Allowed
Code Caused By: Option pin configuration for optional hitch features has changed from one supported feature to another without going through an all-disconnected configuration.
Control Unit Response: Function Disabled (OFF)
HCC 523910.02 — HCC Control Unit Fault
Code Caused By: Data associated with the Hitch Control Unit (HCC) control settings has been corrupted.
Control Unit Response: Function Disabled (OFF)
HCC 523950.13 — Rear Hitch Calibration not Performed Correctly
Code Caused By: Rear Hitch calibration did not see enough purge cycles. The calibration needs to see 3 full down to full up cycles of the rear hitch.
Control Unit Response: Function Degraded
HCC 523952.31 — Rear Hitch Disabled/HCC Configuration
Code Caused By: Operator is trying to use the hitch while it is disabled or not available.
Control Unit Response: Function Disabled (OFF)
HCC 524016.04 — HCC Switched Supply Voltage Low/Rear Hitch Solenoids
Code Caused By: Supply voltage to hitch solenoids below 9.0 V.
Control Unit Response: Function Disabled (OFF)
HCC 524212.19 — Rear Hitch Control Lever Fault Message Received
Code Caused By: Rear Hitch Lever Position data received with a failure indication.
Control Unit Response: Function Disabled (OFF)
HCC 524212.31 — Rear Hitch Lever Command Missing
Code Caused By: Rear Hitch Lever Position data not received through CAN message.
Control Unit Response: Function Disabled (OFF)