Search through frequently encountered fault codes, causes and solutions in tractors. Learn about fault codes related to engine system, transmission, hydraulic system and other important components and their solutions.

Tractor Common Fault Codes and Solutions

Common fault codes, causes and solutions that you may encounter in tractors are listed below. This information will help you understand your problem and solve simple cases.

Engine Control System Faults

111: Engine Control Unit Hardware Fault

Cause: Internal electronic fault in engine control unit, connection problems

Solution: Diagnosis of engine control unit, replacement of faulty parts

115: Engine Speed Sensor Fault

Cause: Engine speed sensor or camshaft sensor fault

Solution: Checking and replacing speed sensor, repairing cable connections

121: Engine Position Sensor Fault

Cause: Engine position sensor or crankshaft sensor fault

Solution: Testing and replacing position sensor

122: Boost Pressure Sensor High Voltage

Cause: Boost pressure sensor voltage too high

Solution: Calibration of pressure sensor, checking voltage levels

123: Boost Pressure Sensor Low Voltage

Cause: Boost pressure sensor voltage too low

Solution: Checking electrical connections, sensor calibration

124: Boost Pressure Warning Limit Exceeded

Cause: Boost pressure level exceeding warning limit

Solution: Checking turbo system, calibrating pressure settings

187: Sensor Supply 2 Voltage Low

Cause: Second sensor supply voltage too low

Solution: Checking and repairing sensor supply circuit

191: A/C Clutch Driver Short Circuit

Cause: A/C clutch driver short circuit to ground when in open position

Solution: Checking and repairing A/C clutch driver circuit

211: Control Modules Communication Problem

Cause: Communication problem with armrest, instrumentation or transmission controllers

Solution: Diagnosis of communication network, detection of faulty modules

212: Oil Temperature Sensor High Voltage

Cause: Engine oil temperature sensor voltage too high

Solution: Checking and replacing oil temperature sensor

213: Oil Temperature Sensor Low Voltage

Cause: Engine oil temperature sensor voltage too low

Solution: Checking sensor connections, voltage stabilization

219: Oil Level Low Remote Reservoir

Cause: Oil level in remote reservoir too low

Solution: Filling oil reservoir, checking for leaks

221: Ambient Air Pressure Sensor High Voltage

Cause: Ambient air pressure sensor voltage too high

Solution: Calibration and checking of air pressure sensor

222: Ambient Air Pressure Sensor Low Voltage

Cause: Ambient air pressure sensor voltage too low

Solution: Checking and repairing sensor supply

227: Sensor Supply 2 Voltage High

Cause: Second sensor supply voltage too high

Solution: Checking voltage regulator, repairing supply circuit

234: Engine Speed Overspeed Warning

Cause: Engine speed exceeding overspeed warning limit

Solution: Checking engine speed regulation system

235: Engine Coolant Level Low

Cause: Engine coolant level low

Solution: Adding coolant, detecting leak points

241: Vehicle Speed Signal Lost

Cause: Loss of vehicle speed signal

Solution: Checking speed sensor, repairing signal cables

254: Fuel Shutoff Valve Low Voltage

Cause: Fuel shutoff valve voltage too low

Solution: Checking and repairing fuel shutoff valve circuit

255: Fuel Shutoff Valve High Voltage

Cause: Fuel shutoff valve voltage too high

Solution: Checking voltage levels, repairing valve circuit

263: Fuel Temperature Sensor High Voltage

Cause: Fuel temperature sensor voltage too high

Solution: Checking fuel system cooling, sensor replacement

265: Fuel Temperature Sensor Low Voltage

Cause: Fuel temperature sensor voltage too low

Solution: Repairing electrical connections, sensor calibration

418: Water in Fuel Sensor Warning

Cause: Water in fuel sensor detecting water presence in fuel filter

Solution: Draining water separator, changing fuel filter

Transmission System Faults

11: Main Clutch Potentiometer Open Circuit

Cause: Main clutch potentiometer open circuit or short circuit to ground

Solution: Checking and repairing potentiometer connections

12: Main Clutch Potentiometer Short Circuit

Cause: Main clutch potentiometer short circuit to +12V

Solution: Checking electrical system, potentiometer replacement

24: Transmission Clutches Not Calibrated

Cause: None of the transmission clutches calibrated

Solution: Professional calibration of transmission clutches

37: BOC Switch Open Circuit

Cause: BOC switch open circuit or neutral relay stuck open

Solution: Checking BOC switch, repairing neutral relay

47: Clutch Pedal Switch Wrong Setting

Cause: Wrong setting of clutch pedal switch bottom part

Solution: Proper adjustment of clutch pedal switch

50: Park Brake Closed in Park

Cause: Park brake closed when in park position

Solution: Checking and adjusting park brake system

64: Transmission Output Speed Too High

Cause: Transmission output speed exceeding 8200 RPM

Solution: Transmission output speed control, gear shift settings

72: Transmission Oil Temperature High

Cause: Transmission oil temperature exceeding 122 degrees

Solution: Oil cooler system maintenance, load reduction

81: Transmission Clutches Slipping

Cause: Transmission clutch wear, oil contamination

Solution: Checking clutch discs, oil change

83: Communication Loss with Engine Control Unit

Cause: CAN Bus communication fault, cable connection problems

Solution: Checking communication cables, diagnosing electronic systems

103: Single Clutch Solenoid Fault

Cause: Single clutch solenoid or its wiring faulty

Solution: Checking and replacing solenoid system

125: Single Clutch Not Calibrated

Cause: Single clutch system calibration missing

Solution: Professional calibration of clutch system

2009: Seat Switch Open Circuit

Cause: Operator seat switch in open circuit condition

Solution: Checking and repairing seat switch

2054: 5 Volt Reference Voltage Low

Cause: Reference voltage too low

Solution: Checking and repairing voltage regulator

2800: Auto Guide Isolation Valve Fault

Cause: Auto guide isolation valve driver fault

Solution: Checking and repairing isolation valve system

Armrest Control System Faults

19: Hand Throttle Potentiometer Fault

Cause: Hand throttle potentiometer fault

Solution: Checking and replacing hand throttle potentiometer

29: Aux 1 Remote Valve Lever Potentiometer Fault

Cause: Auxiliary remote valve #1 lever potentiometer faulty

Solution: Potentiometer checking and replacement

1039: PTO Switch Fault

Cause: PTO switch fault

Solution: Checking and replacing PTO switch

1049: Hitch UP/DOWN Switch Fault

Cause: Hitch up/down switch fault

Solution: Hitch control switch replacement

1079: DIFF LOCK Switch Fault

Cause: Differential lock switch fault

Solution: Checking and repairing diff lock switch

8011: Battery Voltage Too Low

Cause: System battery voltage too low

Solution: Checking battery condition, testing charging system

9011: Memory Error - Connection Position Calibration Lost

Cause: Loss of calibration data due to controller memory error

Solution: Recalibrating the system

12013: Data Bus and ALL Controllers Communication Loss

Cause: Communication loss between CAN data bus and all controllers

Solution: Repairing main CAN data bus system

Hitch and Drawbar System Faults

3: Hitch Raise Solenoid Short Circuit

Cause: Hitch raise solenoid high side driver short circuit to 12V

Solution: Checking solenoid cables, solenoid replacement

4: Hitch Raise Solenoid Open Circuit

Cause: Hitch raise solenoid faulty open or short circuit to ground

Solution: Electrical checking and repair of solenoid circuit

17: Hitch Position Command Fault

Cause: Hitch position command potentiometer faulty in armrest controller

Solution: Position control potentiometer replacement

18: Hitch Rockshaft Position Fault

Cause: Hitch rockshaft position potentiometer outside normal operating range

Solution: Rockshaft position sensor calibration

42: Lower Valve Calibration Engine Speed Error

Cause: Engine speed needs to be set above 1600 RPM during lower valve calibration

Solution: Setting engine speed to correct level

61: Hitch Calibration Process Required

Cause: Hitch calibration process needs to be performed

Solution: Professional calibration of hitch system

80: MFD Solenoid Faulty Open Circuit

Cause: MFD solenoid faulty open or short circuit

Solution: Checking and repairing MFD solenoid system

1002: Raise Draft Valve Coil Fault

Cause: Raise draft valve coil short circuit to 12V

Solution: Electrical checking and replacement of valve coil

1011: TCU Disconnected from CAN Data Bus

Cause: Tractor control unit disconnected from CAN data bus

Solution: Checking and repairing CAN bus communication lines

1018: Draft Link Position Potentiometer Fault

Cause: Draft link position potentiometer open/short/wrong adjustment

Solution: Calibration and adjustment of position potentiometer

PTO (Power Take-Off) System Faults

5001: Rear PTO Cab Switch Open

Cause: PTO cab switch open when tractor running

Solution: Setting PTO switch to correct position

5012: PTO Clutch Excessive Slip

Cause: PTO clutch slipping excessively for 5 seconds or longer

Solution: PTO clutch system maintenance, disc replacement

5017: PTO Clutch Locking Problem

Cause: PTO clutch not locking within 6 seconds after engagement

Solution: Hydraulic pressure check, clutch setting control

8001: Front PTO Cab Switch Open

Cause: Front PTO cab switch open when tractor started

Solution: Closing front PTO switch

8004: Front PTO Solenoid Open Circuit

Cause: Front PTO solenoid open circuit or short circuit to chassis

Solution: Checking and repairing PTO solenoid circuit

Differential and MFD System Faults

6001: MFD/Front Differential Lock Solenoid Fault

Cause: MFD or front differential lock solenoid faulty

Solution: Checking solenoid coil, repairing damaged wiring

6002: Rear Diff Lock Solenoid Fault

Cause: Rear differential lock solenoid faulty

Solution: Solenoid coil replacement, checking connections

6008: Steering Angle Sensor Maximum Limit Exceeded

Cause: Steering angle sensor above maximum voltage limit

Solution: Steering sensor calibration and checking

6009: Steering Angle Sensor Below Minimum Limit

Cause: Steering angle sensor below minimum voltage limit

Solution: Checking and adjusting sensor voltage levels

Front Suspension System Faults

10001: Front Suspension Pump Tank Valve Fault

Cause: Front suspension pump tank valve solenoid open circuit

Solution: Checking and replacing pump valve solenoid

10004: Front Suspension Position Sensor High Error

Cause: Front suspension position sensor out of range high error

Solution: Position sensor calibration and adjustment

10007: Front Suspension Rise Error

Cause: Front suspension unable to return to set point error

Solution: Checking suspension hydraulic system

10014: Front Suspension Not Calibrated

Cause: Front suspension system not calibrated

Solution: Professional calibration of suspension system

Instrument Panel System Faults

1015: Seat Switch Closed

Cause: Seat switch remaining closed (safety system)

Solution: Checking seat switch, safety system calibration

3010: PTO Shaft Speed Sensor Fault

Cause: PTO shaft speed sensor faulty in PTO controller

Solution: Checking and calibrating PTO speed sensor

5010: Engine Oil Pressure Sensor Fault

Cause: Engine oil pressure sensor faulty in engine control unit

Solution: Oil pressure sensor replacement and calibration

11011: Fuel Level Sensor Low Voltage

Cause: Fuel level sensor voltage too low (open circuit)

Solution: Checking level sensor connections, sensor replacement

12091: Communication Loss with Engine Control Unit

Cause: Communication disconnection between instrument panel and engine control unit

Solution: Checking and repairing CAN bus communication lines

14900: Transmission Module Missing

Cause: Transmission controller module missing (DA/DB/DE/DF)

Solution: Checking and installing transmission control module

14901: Engine Controller Not Available

Cause: Engine controller not available (EDC7)

Solution: Checking engine control unit presence

Air Conditioning System Faults

111: Cabin Sensor Open Circuit

Cause: Cabin sensor open or short circuit to power

Solution: Checking sensor connections, sensor replacement

112: Cabin Sensor Short Circuit

Cause: Cabin sensor short circuit to ground

Solution: Checking and repairing electrical circuit

115: Evaporator Sensor Open Circuit

Cause: Evaporator sensor open or short circuit to power supply

Solution: Checking and replacing evaporator sensor

125: High Pressure Switch Power Short Circuit

Cause: High pressure switch (+) input short circuit to power

Solution: Checking and repairing pressure switch circuit

129: High Pressure Cycling Error

Cause: High pressure cycling error (2 times in 1 minute)

Solution: A/C system pressure check, compressor maintenance

134: Low Pressure Switch Open

Cause: Low pressure switch open for more than 1 minute

Solution: Checking A/C gas level, leak detection

AdBlue and Exhaust After-treatment System (DCU) Faults

19001: Battery Voltage Upper Limit Exceeded

Cause: Battery voltage detection signal above upper limit

Solution: Checking voltage regulator, electrical system stabilization

19010: Catalyst Inlet Temperature Sensor High

Cause: Temperature sensor signal high after catalyst

Solution: Checking and replacing catalyst temperature sensor

19037: AdBlue Pressure Sensor Supply High Voltage

Cause: Sensor supply 2 (5V internal; for AdBlue pressure sensors) supply voltage too high

Solution: AdBlue system voltage check and stabilization

19100: AdBlue Level Sensor Supply Error

Cause: Electrical supply voltage error in AdBlue level sensor

Solution: Checking and replacing AdBlue tank level sensor

19145: AdBlue Dosing Valve Electrical Fault

Cause: Dosing valve short circuit to battery or short circuit to ground

Solution: Checking and repairing dosing valve electrical connections

19154: AdBlue Pump Speed Motor Not Installed

Cause: AdBlue pump motor not installed

Solution: Checking and repairing AdBlue pump motor

19415: AdBlue Tank Empty

Cause: AdBlue tank level very low

Solution: Filling AdBlue tank, checking level sensor

19649: AdBlue Tank Level Error

Cause: AdBlue tank level error (CAN message or real sensored electrical)

Solution: Checking tank level sensor, testing CAN communication

Electronic Hydraulic Remote (EHR) Faults

4135: Rear Remote #3 Spool Deviation Excessive

Cause: Remote #3 spool deviation at excessive level

Solution: Adjusting spool position, system calibration

4136: Rear Remote #3 Open Center Not Reached

Cause: Remote #3 unable to reach open center position

Solution: Adjusting and calibrating valve position

4190: EHR 1 Offline Error

Cause: Electronic hydraulic remote #1 offline

Solution: Checking EHR unit electrical connections

4216: Rear Remote #1 Valve Spool Not Calibrated

Cause: Remote #1 valve spool calibration missing

Solution: Professional calibration of valve spool system

4301: Rear Remote #6 EHR Control Messages Missing

Cause: Remote #6 EHR control messages not received

Solution: Checking and repairing EHR communication system

4347: EHR 6 Offline Error

Cause: Electronic hydraulic remote #6 offline

Solution: EHR 6 unit system check

Armrest Electronic System Faults

18001: Hand Throttle #1 Low Voltage

Cause: Hand throttle #1 voltage too low

Solution: Checking and repairing hand throttle potentiometer voltage

18003: Hand Throttle #2 Low Voltage

Cause: Hand throttle #2 voltage too low

Solution: Checking and calibrating second hand throttle sensor

18007: Multi-function Handle Switch Error

Cause: Multi-function handle switch fault

Solution: Checking and repairing multi-function handle system

18014: Rear Hitch Position Control Potentiometer Low Voltage

Cause: Rear hitch position control potentiometer voltage too low

Solution: Checking and replacing hitch position sensor

18049: Joystick 1 X Axis Low Voltage

Cause: Joystick 1 X axis position voltage too low

Solution: Joystick potentiometer calibration

18063: EEPROM Error

Cause: Armrest controller EEPROM memory error

Solution: Reprogramming EEPROM memory system

Intensive Maintenance and Service Faults

14002: Transmission Oil Filter Switch Short Circuit

Cause: Transmission oil filter switch short circuit to ground when power on

Solution: Checking filter switch electrical circuit

14003: Hydraulic Oil Filter Switch Short Circuit

Cause: Hydraulic oil filter switch short circuit to ground when power on

Solution: Repairing hydraulic filter switch circuit

14007: Engine Overspeed

Cause: Engine overspeeding

Solution: Checking and adjusting engine speed regulation system

14016: Engine Shutdown Activated

Cause: Engine shutdown system activation

Solution: Detecting and eliminating engine shutdown cause

14017: Fuel Level Sensor Low Voltage

Cause: Fuel level sensor voltage out of range low

Solution: Checking and replacing fuel level sensor

Important Note: This information is for general guidance. For complex or recurring problems, please contact your nearest authorized service center for your safety and tractor's health. Our expert technicians will solve your problem professionally.