Bobcat loaders are the backbone of any construction or landscaping project, providing the necessary muscle to get the job done quickly and efficiently. However, like all machines, Bobcats are susceptible to occasional breakdowns and malfunctions.
Fortunately, the loader’s onboard computer system is equipped with error codes that provide crucial information about what’s gone wrong. By taking a few minutes to diagnose the error code, you can quickly identify the issue and get your Bobcat back up and running in no time.
Bobcat Fault Code List
| Fault Code | Product | Fault Code Description |
| 3251-03 | ECU Bobcat Engine V1 | EGR Temperature Sensor – Fault |
| 3251-04 | ECU Bobcat Engine V1 | EGR Temperature Sensor – Fault |
| 3252-00 | ECU Bobcat Engine V1 | Exhaust Temperature – High |
| 3509-03 | ECU Bobcat Engine V1 | Sensor Supply Voltage Fault |
| 3509-04 | ECU Bobcat Engine V1 | Sensor Supply Voltage Fault |
| A0803 | Telehandler | Right interlocking sensor Short to Ground or Open circuit |
| A1199 | Telehandler | Overload calibration required |
| A1299 | Telehandler | Tilt inclinometer calibration required |
| A3623 | Attachments | ACD Not Programmed |
| A4621 | M-Series Loader | 5V Sensor Supply Out of Range High |
| A4622 | M-Series Loader | 5V Sensor Supply Out of Range Low |
| A4722 | Attachments | 8 Volt Sensor Supply Out of Range Low |
| A4722 | M-Series Loader | Loader 8V Sensor Supply Out of Range Low |
| A7701 | Attachments | Cab Key Switch Active |
| A7701 | M-Series Loader | Key Switch Active |
| A7901 | Attachments | E-Stop Active |
| A8003 | Attachments | Output A Error Off |
| A8005 | Attachments | Output A Short to Battery |
| A8007 | Attachments | Output A Open Circuit |
| A8103 | Attachments | Output B Error Off |
| A8106 | Attachments | Output B Short to Ground |
| A8207 | Attachments | Output C Open Circuit |
| A8302 | Attachments | Output D Error On |
| A8303 | Attachments | Output D Error Off |
| A8306 | Attachments | Output D Short to Ground |
| A8307 | Attachments | Output D Open Circuit |
| A8332 | Attachments | Output D Overcurrent |
| A8402 | Attachments | Output E Error On |
| A8405 | Attachments | Output E Short to Battery |
| A8432 | Attachments | Output E Overcurrent |
| A8503 | Attachments | Output F Error Off |
| A8505 | Attachments | Output F Short to Battery |
| A8507 | Attachments | Output F Open Circuit |
| A8602 | Attachments | Output G Error On |
| A8702 | Attachments | Output H Error On |
| A8705 | Attachments | Output H Short to Battery |
| A8706 | Attachments | Output H Short to Ground |
| A8707 | Attachments | Output H Open Circuit |
| A8803 | Attachments | Reverse Solenoid Error Off |
| B1005-00 | M-Series Loader | Key Switch Multiple |
| B102A-16 | Toolcat | Cab Controller Sensor Supply – Circuit Voltage Below Threshold |
| B102A-17 | M-Series Loader | Cab Controller Sensor Supply Voltage Out of Range High |
| B1031-11 | M-Series Loader | Front Work Light (Right Side) Short to Ground |
| B1034-11 | Compact Wheel Loader | Rear Work Light Short to Battery |
| B1034-11 | Toolcat | Rear Work Lights – Circuit Short to Ground |
| B1034-12 | Compact Wheel Loader | Rear Work Light Short to Ground |
| B1034-13 | Toolcat | Rear Work Lights – Circuit Open |
| B1036-13 | Toolcat | Rear Marker Lights – Circuit Open |
| B1036-14 | M-Series Loader | Rear Tail Lights Error Off |
| B1037-15 | Compact Wheel Loader | Stop Light Error On |
| B103B-12 | Small Articulated Loader | Light Circuit Short to Battery |
| B103B-14 | Small Articulated Loader | Light Circuit Short to Ground |
| B103D-11 | Compact Wheel Loader | Beacon Short to Ground |
| B1041-12 | M-Series Loader | Backup Alarm Error On |
| B1041-14 | Compact Wheel Loader | Backup Alarm Error On |
| B104A-11 | Compact Wheel Loader | Seat Heater Short to Ground |
| B104A-12 | Compact Wheel Loader | Seat Heater Short to Battery |
| B1051-93 | M-Series Loader | HVAC Inside Sensor In Error |
| B1052-93 | M-Series Loader | HVAC Device Sensor In Error |
| B1054-12 | M-Series Loader | HVAC Clutch Output Error On |
| B1055-93 | M-Series Loader | HVAC Water Valve In Error |
| B1060-93 | M-Series Loader | Lift Pedal In Error |
| B1060-F0 | M-Series Loader | Lift Pedal Not in Neutral |
| B1061-16 | M-Series Loader | Lift Pedal Sensor A Out of Range Low |
| B1062-17 | M-Series Loader | Lift Pedal Position Sensor “B” Out of Range High |
| B1063-00 | M-Series Loader | Lift Pedal Sensor In Error |
| B1070-93 | M-Series Loader | Tilt Pedal In Error |
| B1071-17 | M-Series Loader | Tilt Pedal Sensor A Out of Range High |
| B1072-16 | M-Series Loader | Tilt Pedal Position Sensor “B” Out of Range High |
| B1073-00 | M-Series Loader | Tilt Pedal Sensor In Error |
| B1080-09 | Compact Wheel Loader | Operator Presence Component Failure |
| B1080-16 | M-Series Loader | Seat Bar Out of Range Low |
| B1080-16 | Small Articulated Loader | Armrest Out of Range Low |
| B1080-16 | Toolcat | Operator Presence – Circuit Voltage Below Threshold |
| B1080-17 | Compact Wheel Loader | Operator Presence Circuit Voltage Above Threshold |
| B1080-17 | Small Articulated Loader | Armrest Out of Range High |
| B1095-17 | M-Series Loader | Window Sensor Out of Range High |
| B1095-95 | M-Series Loader | Window Sensor Failure |
| B10A0-12 | M-Series Loader | Wiper Output Short to Battery |
| B10A1-12 | Toolcat | Washer Fluid Output – Circuit Short to Battery |
| B10A1-14 | Toolcat | Washer Fluid Output – Circuit Short to Ground or Open |
| B10A2-11 | Compact Wheel Loader | Front Wiper Short to Ground |
| B10A3-13 | Compact Wheel Loader | Front Wiper High Speed Not connected |
| B10A5-13 | Compact Wheel Loader | Rear Wiper Not Connected |
| B10B3-F0 | M-Series Loader | Drive X Input Not In Neutral |
| B10C0-00 | Compact Wheel Loader | Camera Not Connected |
| B10C1-00 | Toolcat | Camera Software Error |
| B10D0-14 | M-Series Loader | Display Switched Power Relay Error Off |
| B1100-9E | M-Series Loader | Bobtach Engage Button Stuck On |
| B1110-F0 | M-Series Loader | Left Primary Not in Neutral |
| B1120-F0 | Compact Wheel Loader | Joystick Right Roller Not in Neutral |
| B1120-F0 | M-Series Loader | Right Primary Not in Neutral |
| B1121-17 | Small Articulated Loader | Right Secondary Out of Range High |
| B1122-F0 | M-Series Loader | Detent Not in Neutral |
| B1156-00 | Toolcat | FPR Switch Multiple |
| B116F-11 | M-Series Loader | Front Left Road Light Short to Ground |
| B116F-12 | M-Series Loader | Front Left Road Light Short to Battery |
| B116F-13 | M-Series Loader | Front Left Road Light Open Circuit |
| B1172-11 | Toolcat | Front Turn Signal Left – Circuit Short to Ground |
| B1172-13 | Toolcat | Front Turn Signal Left – Circuit Open |
| B1177-14 | M-Series Loader | Left Turn Signal Short to Ground or Open Circuit |
| B1182-13 | Toolcat | Front Turn Signal Right – Circuit Open |
| B1185-11 | Toolcat | Rear Turn Signal Right – Circuit Short to Ground |
| B1185-13 | Toolcat | Rear Turn Signal Right – Circuit Open |
| B1191-12 | Toolcat | Front Work Light 2 – Circuit Short to Battery |
| B1191-14 | Toolcat | Work Light 2 – Circuit Short to Ground or Open |
| B1192-14 | Toolcat | Front Work Light 3 – Circuit Short to Ground or Open |
| B11B1-17 | Toolcat | Travel Pedal Sensor Primary – Circuit Voltage Above Threshold |
| B11B6-16 | Toolcat | Brake Pedal Sensor Primary – Circuit Voltage Below Threshold |
| C1001-16 | Compact Wheel Loader | Sensor Supply Out of Range Low |
| C1001-17 | Compact Wheel Loader | Sensor Supply Out of Range High |
| C1006-17 | Toolcat | Rear Controller Sensor Supply – Circuit Voltage Above Threshold |
| C100A-12 | Toolcat | ECU Power – Circuit Short to Battery |
| C100A-13 | Toolcat | ECU Power – Circuit Open |
| C1016-93 | M-Series Loader | Tilt Spool Position Sensor Unresponsive |
| C1021-12 | Toolcat | Front Aux Rod Solenoid – Circuit Short to Battery |
| C1029-11 | M-Series Loader | Hydraulic Lock Solenoid Short to Ground |
| C1029-13 | M-Series Loader | Hydraulic Lock Solenoid Open Circuit |
| C102A-12 | Compact Wheel Loader | Hydraulic Fan Short to Battery |
| C1030-00 | M-Series Loader | Two Speed Shift Not Allowed |
| C1034-11 | M-Series Loader | Right Brake Hold Output Short to Ground |
| C1034-12 | M-Series Loader | Right Brake Hold Output Short to Battery |
| C1036-17 | M-Series Loader | Right Brake Pull Relay Error On |
| C1039-11 | Compact Wheel Loader | High Flow Solenoid Short to Ground |
| C1039-11 | Toolcat | High Flow Solenoid – Circuit Short to Ground |
| C1039-12 | Compact Wheel Loader | High Flow Solenoid Short to Battery |
| C1039-12 | Toolcat | High Flow Solenoid – Circuit Short to Battery |
| C1040-19 | M-Series Loader | Lift Actuator Overcurrent |
| C1040-77 | M-Series Loader | Lift Actuator Reduced Performance |
| C1042-00 | M-Series Loader | Lift Actuator Uncommanded Motion |
| C1044-11 | Compact Wheel Loader | Lift Cylinder Rod Short to Ground |
| C1045-12 | M-Series Loader | Tilt Actuator Short to Battery |
| C1047-00 | M-Series Loader | Tilt Actuator Uncommanded Motion |
| C1060-11 | Compact Wheel Loader | Brake Short to Ground |
| C1060-12 | Compact Wheel Loader | Brake Short to Battery |
| C1060-13 | Compact Wheel Loader | Brake Open Circuit |
| C1060-13 | Small Articulated Loader | Brake Solenoid Open Circuit |
| C1061-12 | Toolcat | Brake 1 Solenoid – Circuit Short to Battery |
| C1061-13 | Toolcat | Brake 1 Solenoid – Circuit Open |
| C1061-19 | Toolcat | Brake 1 Solenoid – Circuit Current Above Threshold |
| C1062-13 | Toolcat | Brake 2 Solenoid – Circuit Open |
| C1075-11 | M-Series Loader | Rear Auxiliary Rod Solenoid Short to Ground |
| C1076-11 | M-Series Loader | Rear Auxiliary Rod Lock Solenoid Short to Ground |
| C1080-F9 | M-Series Loader | Low Hydraulic Pump Pressure |
| C1091-16 | Toolcat | Hydraulic Main Filter Switch – Circuit Voltage Below Threshold |
| C1091-95 | Toolcat | Hydraulic Main Filter Pressure Switch – Incorrect Assembly |
| C1093-00 | M-Series Loader | Hydraulic Case Drain Filter Switch Plugged |
| C1099-FB | Compact Wheel Loader | Hydraulic Oil Temperature Extremely High |
| C1099-FB | Toolcat | Hydraulic Oil Temperature – Extremely High |
| C109A-17 | Compact Wheel Loader | Hydraulic Oil Temperature Out of Range High |
| C10A1-FC | M-Series Loader | Drive Motor Case Drain Hydraulic Oil Temperature Reduced Performance |
| C10A6-FA | M-Series Loader | Pump Case Drain Hydraulic Oil Temperature High |
| C10C6-16 | M-Series Loader | Left Swash Plate Sensor Out of Range Low |
| C10CA-77 | Toolcat | Swash Plate – Commanded Position Not Reachable |
| C10D1-11 | Compact Wheel Loader | Drive Pump Forward Short to Ground |
| C10D2-11 | Compact Wheel Loader | Drive Pump reverse Short to Ground |
| C10D2-11 | Toolcat | Drive Pump Reverse – Circuit Short to Ground |
| C10D2-19 | Compact Wheel Loader | Drive Pump reverse Overcurrent |
| C10E0-16 | Small Articulated Loader | Controller 8V Sensor Supply Voltage Low |
| D0606 | Telehandler | Vehicle speed Short To Ground |
| D0217 | Telehandler | Hydraulic filter plugged |
| D0428 | Telehandler | Inching Pedal In error |
| D0605 | Telehandler | Vehicle speed Short To Battery |
| D0821 | Telehandler | Frame leveling Pressure Sensor Out Of Range High |
| D2233 | Telehandler | Defeat valve output Controller Internal failure |
| D0217 | Telehandler | Hydraulic filter plugged |
| D0421 | Telehandler | Inching Pedal OOR High |
| D0428 | Telehandler | Inching Pedal In error |
| D0605 | Telehandler | Vehicle speed Short To Battery |
| D0606 | Telehandler | Vehicle speed Short To Ground |
| D0821 | Telehandler | Frame leveling Pressure Sensor Out Of Range High |
| D1145 | Telehandler | Park Brake Dashboard Switch Disagree |
| D1402 | Telehandler | Trailer Brake Command Line Output Error On |
| D1407 | Telehandler | Brake Light Output Open Circuit |
| D1607 | Telehandler | Drive Pump Forward Coil Open circuit |
| D1706 | Telehandler | Drive Pump Reverse Coil Short To Ground |
| D1732 | Telehandler | Drive Pump Reverse Coil Overcurrent |
| D1802 | Telehandler | Stabilisers / Aux diverter output valve error ON |
| D1825 | Telehandler | Stabilisers / Aux diverter output Unresponsive |
| D1902 | Telehandler | Stabilisers / Aux diverter relay feedback error ON |
| D1903 | Telehandler | Stabilisers / Aux diverter relay feedback error OFF |
| D2203 | Telehandler | Defeat valve output (hydraulic motor) Error Off |
| D2502 | Telehandler | Left stabilizer on the floor Error ON |
| D2609 | Telehandler | Hydraulic Steering Pressure Low |
| D2821 | Telehandler | Left stabilizer Pressure Sensor Out Of Range High |
| D2922 | Telehandler | Right stabilizer Pressure Sensor Out Of Range Low |
| D3005 | Telehandler | Stabilizers Right Output Short To Battery |
| D3024 | Telehandler | Stabilizers Right Output Not In Neutral |
| D3105 | Telehandler | Stabilizers Left Output Short To Battery |
| D3106 | Telehandler | Stabilizers Left Output Short To Ground |
| D3107 | Telehandler | Stabilizers Left Output Open circuit |
| D3723 | Telehandler | Programming or constant data invalid |
| D3797 | Telehandler | Drive Controller programmed |
| D4004 | Telehandler | Joystick No communication |
| D4011 | Telehandler | Joystick Right roller Out Of Neutral (Auxiliary) |
| D4403 | Telehandler | Power Quicktach output Error Off |
| D4407 | Telehandler | Power Quicktach Output Open circuit |
| D4621 | Telehandler | Voltage Sensor 5V OOR High |
| D4622 | Telehandler | Voltage Sensor 5V OOR Low |
| D4705 | Telehandler | Frame leveling Output Short To Battery |
| D4803 | Telehandler | Park Brake Reserve Pressure Valve Output Error Off |
| D4807 | Telehandler | Park Brake Reserve Pressure Valve Output Open Circuit |
| D5005 | Telehandler | Rear Aux./Hook UP Valve Short to Battery |
| D5106 | Telehandler | Rear Aux./Hook DOWN Valve Short to Ground |
| D5207 | Telehandler | Rear Aux./Hook ACTIVATION Valve Open Circuit |
| D5328 | Telehandler | Rear Aux./Hook Dashbord Switch In Error |
| D5421 | Telehandler | Auxiliary spool sensor Out Of Range high |
| D5425 | Telehandler | Auxiliary spool sensor unresponsive |
| D5521 | Telehandler | SwashPlate Sensor1 OORH |
| D5715 | Telehandler | Swash Plate shutdown |
| D6021 | Telehandler | Servo Pressure Out of Range High |
| D6505 | Telehandler | Gear 1 (Gearbox) Short To Battery |
| D6507 | Telehandler | Gear 1 (Gearbox) Open Circuit |
| D6605 | Telehandler | Gear 2 (Gearbox) Short To Battery |
