SCV control lever communicates its position to the ACU. This information is sent to the SCC through tractor CAN bus. It is then converted and sent to appropriate SV control unit through SCC/SV CAN Bus. SCV control lever will provide a means of controlling SVs in a number of different ways, depending on operation mode or position of lever.
Communication between selective control valve CAN control unit (SCC) and selective control valve units (SV1—7) and is done on a dedicated CAN network. This CAN network allows for commands from SCC to be sent to each individual SV control unit. SV control units reply to SCC with their respective positions and flow rates. Codes will be set if communication to or from any of these control units does not happen.

John Deere SCC fault codes / John Deere SCC diagnostic trouble codes

NOTE:This page only indicates the meaning of the fault codes. For complete troubleshooting information, see the technical manuals.

SCC 000158.04 (SCC 158.04)— SCC Switched Supply Voltage Low
Code Caused By: Selective Control Unit (SCC) switched supply voltage is below 9.0 V.
Control Unit Response: Function Disabled (OFF)

SCC 000168.03 (SCC 168.03)— SCC Unswitched Supply Voltage High
Code Caused By: Selective Control Unit (SCC) unswitched supply voltage above 18.0 V.
Control Unit Response: Function Disabled (OFF)

SCC 000168.04 (SCC 168.04)— SCC Unswitched Supply Voltage Low
Code Caused By: Selective Control Unit (SCC) unswitched supply voltage below 9.0 V.
Control Unit Response: Indicator/Alarm Only

SCC 000629.12 (SCC 629.12)— SCC Control Unit Fault
Code Caused By: Selective Control Unit (SCC) software failed to execute in allotted time.
Control Unit Response: Function Disabled (OFF)

SCC 000630.13 (SCC 630.13)— SCC Calibration Fault/Not Calibrated
Code Caused By: Selective Control Valves SV I—SV VII not calibrated or a failed calibration was saved.
Control Unit Response: Function Degraded

SCC 000639.12 (SCC 639.12)— SCC CAN Message Overflow
Code Caused By: Bad intelligent device or component. SCC has not received expected messages from other components.
Control Unit Response: Function Disabled (OFF)

SCC 000639.14 (SCC 639.14)— SCC CAN Error Limit Exceeded
Code Caused By: Too many errors received by SCC Control Unit.
Control Unit Response: Function Disabled (OFF)

SCC 001079.03 (SCC 1079.03)— SCC Sensor Supply Voltage High
Code Caused By: Selective Control Unit (SCC) sensor supply voltage for Option Configuration Connector above 5.25 V.
Control Unit Response: Function Degraded

SCC 001079.04 (SCC 1079.04)— SCC Sensor Supply Voltage Low
Code Caused By: Selective Control Unit (SCC) sensor supply voltage is below 4.55 V.
Control Unit Response: Function Degraded

SCC 002005.09 (SCC 2005.09)— ACU Message Missing
Code Caused By: Selective Control Unit (SCC) not receiving required messages from the Armrest Control Unit (ACU).
Control Unit Response: Function Disabled (OFF)

SCC 002049.09 (SCC 2049.09)— CAB Message Missing
Code Caused By: Selective Control Unit (SCC) not receiving required messages from the Cab Control Unit (CAB).
Control Unit Response: Function Degraded

SCC 002071.09 (SCC 2071.09)— CCU Message Missing
Code Caused By: Failed to receive wheel speed from Chassis Control Unit (CCU).
Control Unit Response: Function Degraded

SCC 002139.09 (SCC 2139.09)— CSM Message Missing
Code Caused By: Failed to receive wheel speed from Cab Switch Module (CSM).
Control Unit Response: Function Degraded

SCC 002161.09 (SCC 2161.09)— SV I Message Missing
Code Caused By: Selective Control Unit (SCC) not receiving required messages from the Selective Control Valve I (SV I).
Control Unit Response: Function Disabled (OFF)

SCC 002162.09 (SCC 2162.09)— SV II Message Missing
Code Caused By: Selective Control Unit (SCC) not receiving required messages from the Selective Control Valve II (SV II).
Control Unit Response: Function Disabled (OFF)

SCC 002163.09 (SCC 2163.09)— SV III Message Missing
Code Caused By: Selective Control Unit (SCC) not receiving required messages from the Selective Control Valve III (SV III).
Control Unit Response: Function Disabled (OFF)

SCC 002164.09 (SCC 2164.09)— SV IV Message Missing
Code Caused By: Selective Control Unit (SCC) not receiving required messages from the Selective Control Valve IV (SV IV).
Control Unit Response: Function Disabled (OFF)

SCC 002165.09 (SCC 2165.09)— SV V Message Missing
Code Caused By: Selective Control Unit (SCC) not receiving required messages from the Selective Control Valve V (SV V).
Control Unit Response: Function Disabled (OFF)

SCC 002166.09 (SCC 2166.09)— SV VI Message Missing
Code Caused By: Selective Control Unit (SCC) not receiving required messages from the Selective Control Valve VI (SV VI, Front Hitch).
Control Unit Response: Function Disabled (OFF)

SCC 002167.09 (SCC 2167.09)— SV VII Message Missing
Code Caused By: Selective Control Unit (SCC) not receiving required messages from the Selective Control Valve VII (SV VII).
Control Unit Response: Function Disabled (OFF)

SCC 002602.18 (SCC 2602.18)— Hydraulic Oil Level Low
Code Caused By: Hydraulic oil level low. All SCVs respond to open loop control only.
Control Unit Response: Function Degraded

SCC 521000.02 — Front External Switch Circuit Fault
Code Caused By: Front Hitch External Switch failure.
Control Unit Response: Function Disabled (OFF)

SCC 523216.03 — SCC Unswitched Supply Voltage High to SV I and SV II
Code Caused By: Unswitched supply voltage for SV I and SV II is above 18.0 V.
Control Unit Response: Function Disabled (OFF)

SCC 523216.04 — SCC Unswitched Supply Voltage Low to SV I and SV II
Code Caused By: Unswitched supply voltage for SV I and SV II is below 9.0 V.
Control Unit Response: Function Disabled (OFF)

SCC 523217.03 — SCC Unswitched Supply Voltage High to SV VI (Front Hitch)
Code Caused By: Unswitched supply voltage for SV VI (Front Hitch) is above 18.0 V.
Control Unit Response: Function Disabled (OFF)

SCC 523217.04 — SCC Unswitched Supply Voltage Low to SV VI (Front Hitch)
Code Caused By: Unswitched supply voltage for SV VI (Front Hitch) is below 9.0 Volts.
Control Unit Response: Function Disabled (OFF)

SCC 523219.03 — SCC Unswitched Supply Voltage High to SV III and SV IV
Code Caused By: Unswitched supply voltage for SV III and IV is above 18.0 Volts.
Control Unit Response: Function Disabled (OFF)

SCC 523219.04 — SCC Unswitched Supply Voltage Low to SV III and SV IV
Code Caused By: Unswitched supply voltage for SV III and IV is below 9.0 Volts.
Control Unit Response: Function Disabled (OFF)

SCC 523652.02 — Wire Connector Fault
Code Caused By: Control unit is connected to wrong harness.
Control Unit Response: Function Disabled (OFF)

SCC 523693.02 — Missing SV I External Control Message for 10 Seconds
Code Caused By: SV I external control message missing for longer than 10 seconds.
NOTE: Missing command messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523693.09 — Missing SV I External Control Message for 1 Second
Code Caused By: SV I external control message missing for longer than 1 second.
NOTE: Missing command messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523693.19 — SV I External Control Fault Message Received
Code Caused By: SV I external control data has been received via CAN message with a failure indication.
NOTE: Fault messages can be from:
Resume Switch
iTEC™
Option Configuration Connector
Attached Implements
Control Unit Response: Function Degraded

SCC 523694.02 — Missing SV II External Control Message for 10 Seconds
Code Caused By: SV II external control message missing for longer than 10 seconds.
NOTE: Missing command messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523694.09 — Missing SV II External Control Message for 1 Second
Code Caused By: SV II external control message missing for longer than 1 second.
NOTE: Missing command messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523694.19 — SV II External Control Fault Message Received
Code Caused By: SV II external control data has been received via CAN message with a failure indication.
NOTE: Fault messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523695.02 — Missing SV V External Control Message for 10 Seconds
Code Caused By: SV V external control message missing for longer than 10 seconds.
NOTE: Missing command messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523695.09 — Missing SV V External Control Message for 1 Second
Code Caused By: SV V external control message missing for longer than 1 second.
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523695.19 — SV V External Control Fault Message Received
Code Caused By: SV V external control data has been received via CAN message with a failure indication.
NOTE: Fault messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523696.02 — Missing Front Hitch External Control Message for 10 Seconds
Code Caused By: Front Hitch external control message missing for longer than 10 seconds.
NOTE: Missing commаnd messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523696.09 — Missing Front Hitch External Control Message for 1 Second
Code Caused By: Front Hitch external control message missing for longer than 1 second.
NOTE: Missing command messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523696.19 — Front Hitch External Control Fault Message Received
Code Caused By: Front Hitch external control data has been received via CAN message with a failure indication.
NOTE: Fault messages can be from:
– Resume Switch
– iTEC™
– Option Configuration Connector
– Attached Implements
Control Unit Response: Function Degraded

SCC 523775.19 — Single Lever Control Hand Presence Switch Fault Message Received
Code Caused By: Single lever control hand presence switch failure.
Control Unit Response: Function Disabled (OFF)

SCC 523776.19 — Single Lever Control Transport Lock Switch Fault Message Received
Code Caused By: Single lever control transport lock switch failure.
Control Unit Response: Function Disabled (OFF)

SCC 523785.01 — Lost Laser Track/Electro-Hydraulic External Control Not Available for SV III
Code Caused By: Front scraper has lost laser signal input.
Control Unit Response: Function Degraded

SCC 523785.03 — SVs I—IV Remote Position Sensor 2 Circuit Voltage High
Code Caused By: Remote sensor 2 voltage above 4.50 Volts.
Control Unit Response: Function Degraded

SCC 523785.04 — SVs I—IV Remote Position Sensor 2 Circuit Voltage Low
Code Caused By: Remote sensor 2 voltage below 0.5 Volts.
Control Unit Response: Function Degraded

SCC 523785.07 — SVs I—IV Remote Position Sensor 2 Fault/Unexpected Response
Code Caused By: Remote sensor 2 voltage does not correspond to expected value.
Control Unit Response: Function Degraded

SCC 523786.01 — Lost Laser Track/Electro-Hydraulic External Control Not Available for SV I
Code Caused By: Rear scraper has lost laser signal input.
Control Unit Response: Function Degraded

SCC 523786.03 — SVs I—IV Remote Position Sensor 1 Circuit Voltage High
Code Caused By: Remote sensor 1 voltage above 4.50 Volts.
Control Unit Response: Function Degraded

SCC 523786.04 — SVs I—IV Remote Position Sensor 1 Circuit Voltage Low
Code Caused By: Remote sensor 1 voltage below 0.5 Volts.
Control Unit Response: Function Degraded

SCC 523786.07 — SVs I—IV Remote Position Sensor 1 Fault/Unexpected Response
Code Caused By: Remote sensor 1 voltage does not correspond to expected value.
Control Unit Response: Function Degraded

SCC 523788.02 — Hydraulic Option Configuration Changed Since Power-Up
Code Caused By: Option pin configuration for optional SV I—IV features has changed since last power up.
Control Unit Response: Function Degraded

SCC 523788.14 — Hydraulic Option Configuration Changed Without Disconnect
Code Caused By: Option pin configuration for optional SV I—IV features has changed from one supported feature to another without going through an all-disconnected configuration.
Control Unit Response: Function Degraded

SCC 523788.31 — Hydraulic Option Configuration Invalid
Code Caused By: Option pin configuration for optional SV I—IV features is invalid or not supported.
Control Unit Response: Function Degraded

SCC 523801.19 — Single Lever Control Auxiliary Switch Fault Message Received
Code Caused By: Single lever control auxiliary switches (Thumb Switches) failure.
Control Unit Response: Function Disabled (OFF)

SCC 523804.19 — Single Lever Control Lateral Sensor Fault Message Received
Code Caused By: Single Lever Control lateral data has been received via CAN message with a failure indication.
Control Unit Response: Function Disabled (OFF)

SCC 523805.19 — Single Lever Control Fore-Aft Sensor Fault Message Received
Code Caused By: Single Lever Control fore/aft data has been received via CAN message with a failure indication.
Control Unit Response: Function Disabled (OFF)

SCC 523910.02 — SCC Control Unit Fault
Code Caused By: Data associated with the Selective Control Unit (SCC) control settings has been corrupted.
Control Unit Response: Function Degraded

SCC 523923.19 — SCV I Control Lever Fault Message Received
Code Caused By: SCV I lever position data has been received via CAN message with a failure indication.
Control Unit Response: Function Disabled (OFF)

SCC 523923.31 — SCV I Control Lever Command Missing
Code Caused By: SCV I lever position data has not been received via CAN message. SCV I lever may not have been configured correctly at ACU Address 060.
Control Unit Response: Function Disabled (OFF)

SCC 523942.31 — Operator Out of Seat With Front Hitch ON
Code Caused By: Operator out of the seat with SV VI (Front Hitch) in continuous flow and tractor not in motion.
Control Unit Response: Indicator/Alarm Only

SCC 523943.31 — Operator Out of Seat With SV V ON
Code Caused By: Operator out of the seat with SV V in continuous flow and tractor not in motion.
Control Unit Response: Indicator/Alarm Only

SCC 523944.31 — Operator Out of Seat With SV IV ON
Code Caused By: Operator out of the seat with SV IV in continuous flow and tractor not in motion.
Control Unit Response: Indicator/Alarm Only

SCC 523945.31 — Operator Out of Seat With SV III ON
Code Caused By: Operator out of the seat with SV III in continuous flow and tractor not in motion.
Control Unit Response: Indicator/Alarm Only

SCC 523946.31 — Operator Out of Seat With SV II ON
Code Caused By: Operator out of the seat with SV II in continuous flow and tractor not in motion.
Control Unit Response: Indicator/Alarm Only

SCC 523947.31 — Operator Out of Seat With SV I ON
Code Caused By: Operator out of the seat with SV I in continuous flow and tractor not in motion.
Control Unit Response: Indicator/Alarm Only

SCC 524015.02 — Missing SV III External Control Message for 10 Seconds
Code Caused By: SV III external control message missing for longer than 10 seconds.
NOTE: Missing command messages can be from:
Resume Switch
iTEC™
Option Configuration Connector
Attached Implements
Control Unit Response: Function Degraded

SCC 524015.09 — Missing SV III External Control Message for 1 Second
Code Caused By: SV III external control message missing for longer than 1 second.
NOTE: Missing command messages can be from:
Resume Switch
iTEC™
Option Configuration Connector
Attached Implements
Control Unit Response: Function Degraded

SCC 524015.19 — SV III External Control Fault Message Received
Code Caused By: SV III external control data has been received via CAN message with a failure indication.
NOTE: Fault messages can be from:
Resume Switch
iTEC™
Option Configuration Connector
Attached Implements
Control Unit Response: Function Degraded

SCC 524038.19 — SV IV External Control Fault Message Received
Code Caused By: SV IV external control data has been received via CAN message with a failure indication.
NOTE: Fault messages can be from:
Resume Switch
iTEC™
Option Configuration Connector
Attached Implements
Control Unit Response: Function Degraded

SCC 524101.19 — Front Control Hitch Lever Fault Message Received
Code Caused By: Front Control Hitch Lever data has been received via CAN message with a failure indication.
Control Unit Response: Function Disabled (OFF)

SCC 524101.31 — Front Control Hitch Lever Command Missing
Code Caused By: SCC has not been received Front Control Hitch Lever command data.
Control Unit Response: Function Disabled (OFF)

SCC 524102.19 — SCV V Control Lever Fault Message Received
Code Caused By: SCV V lever position data has been received via CAN message with a failure indication.
Control Unit Response: Function Disabled (OFF)

SCC 524102.31 — SCV V Control Lever Command Missing
Code Caused By: SCV V lever position data has not been received via CAN message.
Control Unit Response: Function Disabled (OFF)

SCC 524103.19 — SCV IV Control Lever Fault Message Received
Code Caused By: SCV IV lever position data has been received via CAN message with a failure indication.
Control Unit Response: Function Disabled (OFF)

SCC 524103.31 — SCV IV Control Lever Command Missing
Code Caused By: SCV IV lever position data has not been received via CAN message.
Control Unit Response: Function Disabled (OFF)

SCC 524104.19 — SCV III Control Lever Fault Message Received
Code Caused By: SCV III lever position data has been received via CAN message with a failure indication.
Control Unit Response: Function Disabled (OFF)

SCC 524104.31 — SCV III Control Lever Command Missing
Code Caused By: SCV III lever position data has not been received via CAN message.
Control Unit Response: Function Disabled (OFF)

SCC 524105.19 — SCV II Control Lever Fault Message Received
Code Caused By: SCV II lever position data has been received via CAN message with a failure indication.
Control Unit Response: Function Disabled (OFF)

SCC 524105.31 — SCV II Control Lever Command Missing
Code Caused By: SCV II lever position data has not been received via CAN message.
Control Unit Response: Function Disabled (OFF)