Kobelco Excavator Fault Code Guide: Your Comprehensive Troubleshooting Resource - June 15, 2025
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Kobelco Excavator Fault Code Diagnosis Essentials (Type 6)
The electronic control unit can automatically store and display detected abnormalities as fault codes on the multi-function monitor.
Display Method: Turn the start switch to the “ON” position. Within 10 seconds, press the buzzer stop switch 5 times consecutively to enter the fault code display screen. Up to 20 fault code screens are available, with the earliest fault displayed first. Fault data and engine hours will also be shown. The screen displays “Engine Hours + 3 Fault Data”. If more than 3 faults exist, the subsequent 3 data entries will be displayed every 5 seconds.
Page Navigation: Use the work mode selection switch and the buzzer stop switch to navigate. Work mode selection switch: Page forward. Buzzer stop switch: Page forward.
Stop Display: Turn the start switch to the “OFF” position.
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Method for Clearing Fault History
Enter the fault code display screen.
Press and hold both the work mode selection switch and the buzzer stop switch for more than 10 seconds.
When “No abnormality” is displayed, all data is cleared.
Turn the start switch to the “OFF” position.
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Fault Code Display Content (Type 6)
| Mark | Display Content |
|---|---|
| A | Electronic Control Unit |
| A-1 | ROM Data |
| A-2 | A Adjustment Malfunction |
| B | Low Pressure Sensor |
| B-1 | Boom Up |
| B-2 | Boom Down |
| B-3 | Arm Extend |
| B-4 | Arm Retract |
| B-5 | Bucket Dig |
| B-6 | Bucket Dump |
| B-7 | Right Swing |
| B-8 | Left Swing |
| B-9 | Right Travel |
| B-10 | Left Travel |
| B-11 | P1 Negative Pressure |
| B-12 | P2 Negative Pressure |
| B-15 | Back Pressure |
| B-16 | P1 Optional |
| B-17 | P2 Optional |
| C | High Pressure Sensor |
| C-1 | P1 Pump |
| C-2 | P2 Pump |
| D | Proportional Valve (Control Valve) |
| D-1 | P1 Neutral Cut-off |
| D-2 | P2 Neutral Cut-off |
| D-3 | Straight Travel |
| D-6 | Arm Variable Regeneration |
| E | Proportional Valve (Hydraulic Pump) |
| E-1 | P1 Pump |
| E-2 | P2 Pump |
| F | Solenoid Valve |
| F-1 | Boost |
| F-2 | Swing Brake |
| F-3 | 1st/2nd Speed Travel |
| G | E/G Attachment |
| G-1 | Stepping Motor Current |
| G-2 | Start Point Indexing |
| G-3 | E/G Speed Sensor |
| H | Throttle Knob |
| H-1 | Throttle Knob |
| I | |
| I-1 | Receiving Information Abnormal |
| I-2 | Battery Relay |
| No Abnormality |
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Fault Code Diagnosis Essentials (SK200/210/230/250-6E Type)
Note: The difference between the SK200-6 and SK200-6E is that the 6E model lacks a back pressure sensor and negative pressure sensor. The swing sensor is located on the multi-way valve, and there is only one alarm code B-7. Other differences are minor.
| Mark | Display Content |
|---|---|
| A | Electronic Control Unit |
| A-1 | ROM Data |
| A-2 | A Adjustment Malfunction |
| B | Low Pressure Sensor |
| B-1 | Boom Up |
| B-2 | Boom Down |
| B-3 | Arm Extend |
| B-4 | Arm Retract |
| B-5 | Bucket Dig |
| B-6 | Bucket Dump |
| B-7 | Right Swing |
| B-9 | Right Travel |
| B-10 | Left Travel |
| C | High Pressure Sensor |
| C-1 | P1 Pump |
| C-2 | P2 Pump |
| D | Proportional Valve (Control Valve) |
| D-1 | P1 Neutral Cut-off |
| D-2 | P2 Neutral Cut-off |
| D-3 | Straight Travel |
| D-6 | Arm Variable Regeneration |
| E | Proportional Valve (Hydraulic Pump) |
| E-1 | P1 Pump |
| E-2 | P2 Pump |
| F | Solenoid Valve |
| F-1 | Boost |
| F-2 | Swing Brake |
| F-3 | 1st/2nd Speed Travel |
| G | E/G Attachment |
| G-1 | Stepping Motor Current |
| G-2 | Start Point Indexing |
| G-3 | E/G Speed Sensor |
| H | Throttle Knob |
| H-1 | Throttle Knob |
| I | |
| I-1 | Receiving Information Abnormal |
| I-2 | Battery Relay |
| No Abnormality |
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Fault Code Diagnosis Essentials (SK330/350-6E Type)
Display Method: (Same as Type 6)
Method for Clearing Fault History: (Same as Type 6)
| Mark | Display Content |
|---|---|
| A | Electronic Control Unit |
| A-1 | ROM Data |
| A-2 | A Adjustment Malfunction |
| B | Low Pressure Sensor |
| B-1 | Boom Up |
| B-2 | Boom Down |
| B-3 | Arm Extend |
| B-4 | Arm Retract |
| B-5 | Bucket Dig |
| B-6 | Bucket Dump |
| B-7 | Right Swing |
| B-9 | Right Travel |
| B-10 | Left Travel |
| B-11 | P1 Negative Pressure |
| B-12 | P2 Negative Pressure |
| B-15 | Back Pressure |
| C | High Pressure Sensor |
| C-1 | P1 Pump |
| C-2 | P2 Pump |
| D | Proportional Valve (Control Valve) |
| D-1 | P1 Neutral Cut-off |
| D-2 | P2 Neutral Cut-off |
| D-3 | Straight Travel |
| D-6 | Arm Variable Regeneration |
| E | Proportional Valve (Hydraulic Pump) |
| E-1 | P1 Pump |
| E-2 | P2 Pump |
| F | Solenoid Valve |
| F-1 | Boost |
| F-2 | Swing Brake |
| F-3 | 1st/2nd Speed Travel |
| G | E/G Attachment |
| G-3 | E/G Speed Sensor |
| H | Throttle Knob |
| H-1 | Throttle Knob |
| I | |
| I-1 | Receiving Information Abnormal |
| I-2 | Battery Relay |
| No Abnormality |
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Kobelco -8, Super 8 Fault Code Directory
| Fault Code | Fault Content |
|---|---|
| A015 | Engine adjustment (A adjustment) not performed or failed |
| A025 | Pump proportional valve adjustment (B adjustment) not performed or failed |
| A035 | Unloading valve adjustment (C adjustment) not performed or failed |
| A215 | ROM adjustment data write data abnormality |
| A225 | ROM adjustment data write abnormality |
| A235 | ROM timer data write data abnormality |
| A245 | ROM timer data write abnormality |
| A255 | Proportional valve adjustment data write abnormality |
| B012 | Boom up pressure sensor abnormal output |
| B013 | Boom up pressure sensor disconnection abnormality |
| B014 | Boom up pressure sensor power short circuit |
| B022 | Boom down pressure sensor abnormal output |
| B023 | Boom down pressure sensor disconnection abnormality |
| B024 | Boom down pressure sensor power short circuit |
| B032 | Arm extend pressure sensor abnormal output |
| B033 | Arm extend pressure sensor disconnection abnormality |
| B034 | Arm extend pressure sensor power short circuit |
| B042 | Arm retract pressure sensor abnormal output |
| B043 | Arm retract pressure sensor disconnection abnormality |
| B044 | Arm retract pressure sensor power short circuit |
| B052 | Bucket dig pressure sensor abnormal output |
| B053 | Bucket dig pressure sensor disconnection abnormality |
| B054 | Bucket dig pressure sensor power short circuit |
| B062 | Bucket dump pressure sensor abnormal output |
| B063 | Bucket dump pressure sensor disconnection abnormality |
| B064 | Bucket dump pressure sensor power short circuit |
| B072 | Swing pressure sensor abnormal output |
| B073 | Swing pressure sensor disconnection abnormality |
| B074 | Swing pressure sensor power short circuit |
| B092 | Right travel pressure sensor abnormal output |
| B093 | Right travel pressure sensor disconnection abnormality |
| B094 | Right travel pressure sensor power short circuit |
| B102 | Left travel pressure sensor abnormal output |
| B103 | Left travel pressure sensor disconnection abnormality |
| B104 | Left travel pressure sensor power short circuit |
| B113 | Optional equipment selector position detection pressure sensor disconnection abnormality |
| B114 | Optional equipment selector position detection pressure sensor power short circuit |
| B162 | P1 side optional equipment pressure sensor abnormal output |
| B163 | P1 side optional equipment pressure sensor disconnection abnormality |
| B164 | P1 side optional equipment pressure sensor power short circuit |
| B172 | P2 side optional equipment pressure sensor abnormal output |
| B173 | P2 side optional equipment pressure sensor disconnection abnormality |
| B174 | P2 side optional equipment pressure sensor power short circuit |
| C012 | P1 pump pressure sensor abnormal output |
| C013 | P1 pump pressure sensor disconnection abnormality |
| C014 | P1 pump pressure sensor power short circuit |
| C022 | P2 pump pressure sensor abnormal output |
| C023 | P2 pump pressure sensor disconnection abnormality |
| C024 | P2 pump pressure sensor power short circuit |
| C033 | Boom head pressure sensor disconnection abnormality |
| C034 | Boom head pressure sensor power short circuit |
| C043 | Boom rod pressure sensor disconnection abnormality |
| C044 | Boom rod pressure sensor power short circuit |
| D012 | P1 unload proportional valve output transistor ON fault |
| D013 | P1 unload proportional valve disconnection abnormality |
| D022 | P2 unload proportional valve output transistor ON fault |
| D023 | P2 unload proportional valve disconnection abnormality |
| D032 | Travel straight proportional valve output transistor ON fault |
| D033 | Travel straight proportional valve disconnection abnormality |
| D062 | Arm retract 2-speed proportional valve output transistor ON fault |
| D063 | Arm retract 2-speed proportional valve disconnection abnormality |
| E012 | P1 pump proportional valve output transistor ON fault |
| E013 | P1 pump proportional valve disconnection abnormality |
| E022 | P2 pump proportional valve output transistor ON fault |
| E023 | P2 pump proportional valve disconnection abnormality |
| F011 | Work equipment boost solenoid valve output transistor OFF fault, ground short circuit |
| F013 | Work equipment boost solenoid valve output transistor ON fault, disconnection |
| F021 | Swing parking solenoid valve output transistor OFF fault, ground short circuit |
| F023 | Swing parking solenoid valve output transistor ON fault, disconnection |
| F031 | Travel 1st-2nd speed solenoid valve output transistor OFF fault, ground short circuit |
| F033 | Travel 1st-2nd speed solenoid valve output transistor ON fault, disconnection |
| F041 | Optional equipment selector solenoid valve output transistor OFF fault, ground short circuit |
| F043 | Optional equipment selector output transistor ON fault, disconnection |
| G032 | Speed sensor directly input by electronic control unit over limit |
| G033 | Speed sensor directly input by electronic control unit disconnection abnormality |
| G042 | Data over limit from speed sensor directly input by electronic control unit and engine controller |
| G043 | Disconnection abnormality for data received from speed sensor directly input by electronic control unit and engine controller |
| H013 | Throttle potentiometer disconnection abnormality |
| H014 | Throttle potentiometer power short circuit |
| H023 | Boom angle potentiometer disconnection abnormality |
| H024 | Boom angle potentiometer power short circuit |
| H033 | Arm angle potentiometer disconnection abnormality |
| H034 | Arm angle potentiometer power short circuit |
| H091 | Fuel sensor ground short circuit abnormality |
| H093 | Fuel sensor disconnection abnormality |
| I111 | CAN1 communication reception abnormality (passive fault) |
| I113 | CAN1 communication reception abnormality (communication interruption) |
| I313 | Instrument panel communication reception abnormality (communication interruption fault) |
| K014 | Battery relay contact sintering |
| R014 | Wiper motor arc prevention relay abnormality |
| R024 | Wiper motor forward rotation relay abnormality |
| R034 | Wiper motor reverse rotation relay abnormality |
| R044 | Washer motor relay abnormality |
| R134 | Rotating beacon relay abnormality |
| R144 | Rotating beacon relay abnormality |
| R154 | Travel alarm relay abnormality |
| R164 | Automatic idle stop relay 2 abnormality |
| R174 | Engine forced stop relay abnormality |
| R184 | Control lever lock relay abnormality |
| R214 | Safety relay abnormality |
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Kobelco -8, Super 8 Engine Fault Code Table
| DTC Code | Inferred Fault Cause |
|---|---|
| P0335 | Main Revolution Sensor System Malfunction |
| P0606 | CPU Fault (Detected by Hard Disk Check) |
| P0629 | Supply Solenoid Valve System Malfunction |
| P0200 | ECU Charging Circuit Malfunction (HI) |
| P0611 | ECU Charging Circuit Malfunction (LOW) |
| P2120 | Two Throttle Sensor System Malfunction |
| P0217 | Overheat |
| P0540 | Preheating Device Malfunction (Open/GND Short) |
| P0540 | Preheating Device Malfunction (+B Short) |
| P0234 | Turbocharger Overload Device |
| P0088 | Common Rail Diesel Injection System Pressure Abnormality, Control System |
| P0088 | Common Rail Diesel Injection System Pressure Abnormality, Pump Over-Pressure Delivery |
| P0108 | Boost Sensor Malfunction (HI) |
| P0117 | Water Temperature Sensor Malfunction (LOW) |
| P0118 | Water Temperature Sensor Malfunction (HI) |
| P0191 | Common Rail Diesel Injection System Pressure Sensor Malfunction |
| P0192 | Common Rail Diesel Injection System Pressure Sensor Malfunction (LOW) |
| P0193 | Common Rail Diesel Injection System Pressure Sensor Malfunction (HI) |
| P0201 | Fuel Injection Device 1 Solenoid Valve System Disconnection |
| P0202 | Fuel Injection Device 2 Solenoid Valve System Disconnection |
| P0203 | Fuel Injection Device 3 Solenoid Valve System Disconnection |
| P0204 | Fuel Injection Device 4 Solenoid Valve System Disconnection |
| P0237 | Boost Sensor Malfunction (LOW) |
| P0404 | EGR Valve Fastening 1 |
| P0405 | EGR Valve Lift Sensor 1 Malfunction (LOW) |
| P0406 | EGR Valve Lift Sensor 1 Malfunction (HI) |
| P0489 | EGR Valve Linear Solenoid Valve 1 Malfunction (Disconnection, GND Short) |
| P0490 | EGR Valve Linear Solenoid Valve 1 Malfunction (VB Short) |
| P0605 | Flash ROM Abnormality |
| P0607 | CPU Monitoring IC Abnormality |
| P0628 | Supply Pump Solenoid Valve System Malfunction (Full Discharge Mode) |
| P1211 | Fuel Injection Device Solenoid Valve Drive System GND Short · Common Rail 1 Malfunction |
| P1212 | Fuel Injection Device Solenoid Valve Drive System +B Short · Common Rail 1 Malfunction |
| P1212 | Fuel Injection Device Solenoid Valve Drive System Open · Common Rail 1 Malfunction |
| P1214 | Fuel Injection Device Solenoid Valve Drive System GND Short · Common Rail 2 Malfunction |
| P1215 | Fuel Injection Device Solenoid Valve Drive System +B Short · Common Rail 2 Malfunction |
| P1215 | Fuel Injection Device Solenoid Valve Drive System Open · Common Rail 2 Malfunction |
| P1601 | Fuel Injection Device Multi-Point Compensation Abnormality |
| P2228 | Atmospheric Pressure Sensor Malfunction (LOW) |
| P2229 | Atmospheric Pressure Sensor Malfunction (HI) |
| P2635 | Supply Pump Solenoid Valve Fastening |
| P2635 | Supply Pump Insufficient Function |
| P0182 | Fuel Temperature Sensor Malfunction (LOW) |
| P0183 | Fuel Temperature Sensor Malfunction (HI) |
| P0340 | Sub Revolution Sensor System Malfunction |
| P0686 | Main Relay System Malfunction |
| P2122 | Throttle Sensor 1 Malfunction (LOW) |
| P2123 | Throttle Sensor 1 Malfunction (HI) |
| P2127 | Throttle Sensor 2 Malfunction (LOW) |
| P2128 | Throttle Sensor 2 Malfunction (HI) |
| P1133 | Emergency Throttle Sensor Malfunction (HI) |
| P0219 | Engine Overrun |
| P0263 | Inter-Cylinder Compensation Error #1 |
| P0266 | Inter-Cylinder Compensation Error #2 |
| P0269 | Inter-Cylinder Compensation Error #3 |
| P0272 | Inter-Cylinder Compensation Error #4 |
| P0617 | Starter Switch System Malfunction |
| P2635 | Supply Pump Abnormal Pressure History |
| U1001 | CAN Communication Stop (Mechanical) |
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Glossary of Machinery Parts
风扇马达 (Fēngshàn Mǎdá) / Fan Motor / Вентиляторный двигатель: A motor that drives the fan for cooling the engine or hydraulic system. Example: 卡特彼勒 345D风扇马达 / Caterpillar 345D fan motor / вентиляторный двигатель Caterpillar 345D.
空气滤芯 (Kōngqì Lǜxīn) / Air Filter / Воздушный фильтр: Cleans the air entering the engine, preventing dust and debris from causing damage. Example: 小松 PC200-8 空气滤芯 / Komatsu PC200-8 air filter / воздушный фильтр Komatsu PC200-8. Part Number: 17A-Z11-2511.
水温传感器 (Shuǐwēn Chuángǎnqì) / Water Temperature Sensor / Датчик температуры воды: Measures the temperature of the engine coolant. Example: 日立 ZX200 水温传感器 / Hitachi ZX200 water temperature sensor / датчик температуры воды Hitachi ZX200. Part Number: 4110000909101.
液压泵 (Yèyā Bèng) / Hydraulic Pump / Гидравлический насос: Converts mechanical power into hydraulic power to operate various functions of the machinery. Example: 卡特彼勒 320L 液压泵 / Caterpillar 320L hydraulic pump / гидравлический насос Caterpillar 320L.
喷油器 (Pēnyóuqì) / Fuel Injector / Топливная форсунка: Sprays fuel into the engine cylinder for combustion. Example: 康明斯 QSK19 喷油器 / Cummins QSK19 fuel injector / топливная форсунка Cummins QSK19.
曲轴 (Qūzhóu) / Crankshaft / Коленчатый вал: Converts the reciprocating motion of the pistons into rotational motion. Example: 五十铃 6HK1 曲轴 / Isuzu 6HK1 crankshaft / коленчатый вал Isuzu 6HK1.
油缸 (Yóugāng) / Hydraulic Cylinder / Гидравлический цилиндр: Converts hydraulic power into linear motion to operate components like the boom and arm. Example: 小松 PC300 油缸 / Komatsu PC300 hydraulic cylinder / гидравлический цилиндр Komatsu PC300.
履带链条 (Lǚdài Liàn Tiáo) / Track Chain / Гусеничная цепь: Provides traction for tracked vehicles like excavators and bulldozers. Example: 卡特彼勒 D7G 履带链条 / Caterpillar D7G track chain / гусеничная цепь Caterpillar D7G.
驾驶室 (Jiàshǐ Shì) / Cabin / Кабина: The enclosed area where the operator controls the machinery. Example: 沃尔沃 EC220D 驾驶室 / Volvo EC220D cabin / кабина Volvo EC220D.
增压器 (Zēngyāqì) / Turbocharger / Турбокомпрессор: Increases the power output of an engine by forcing more air into the combustion chamber. Example: 卡特彼勒 C9 增压器 / Caterpillar C9 turbocharger / турбокомпрессор Caterpillar C9.
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