Comprehensive Guide to Caterpillar Excavator Fault Codes: CAT320B and CAT320D Troubleshooting - June 14, 2025
点击此处淘宝线上购买 
CAT320B Excavator Fault Codes Table (卡特320B挖掘机故障代码表)
| Fault Code (故障代码) | Description (描述) | English Translation (英文翻译) |
|---|---|---|
| 1301 | 发动机机油压力过低 | Engine oil pressure too low |
| 1302 | 发动机冷却液温度过高 | Engine coolant temperature too high |
| 1303 | 液压油温度过高 | Hydraulic oil temperature too high |
| 1304 | 进气滤芯堵塞 | Air inlet filter blocked |
| 1305 | 蓄电池电压异常 | Battery voltage abnormal |
| 2201 | 连到蓄电池电压的调速器致动器反馈传感器开路或短路 | Governor actuator feedback sensor connected to battery voltage open or short circuit |
| 2202 | 连到机体接地的调速器致动器反馈传感器短路 | Governor actuator feedback sensor connected to body ground short circuit |
| 2301 | 调速器致动器反馈信号不稳定 | Governor actuator feedback signal unstable |
| 2302 | 调速器致动器反馈信号有偏差 | Governor actuator feedback signal deviation |
| 2303 | 调速器致动器不动 | Governor actuator does not move |
| 2304 | 校准数据错误 | Calibration data error |
| 3201 | 监控器RAM异常 | Monitor RAM abnormal |
| 4101 | 对控制器的供电过多（43伏） | Excessive power supply to controller (43 volts) |
| 4102 | PRV电流过大 | PRV current too high |
| 4103 | PRV开路 | PRV open circuit |
| 4104 | 监控器电源（数字输出）过电流 | Monitor power (digital output) overcurrent |
| 4105 | 数字输出中过电流（开沟电磁阀） | Overcurrent in digital output (ditch solenoid valve) |
| 4106 | 数字输出中过电流（微调控制电磁阀） | Overcurrent in digital output (fine-tuning control solenoid valve) |
| 4107 | 数字输出中过电流（行驶速度变化电磁阀） | Overcurrent in digital output (travel speed change solenoid valve) |
| 4108 | 数字输出中过电流（行车警报器） | Overcurrent in digital output (travel alarm) |
| 4109 | 备用电磁线圈1（数字输出）过电流 | Spare solenoid coil 1 (digital output) overcurrent |
| 410A | 数字输出中过电流（转盘制动器电磁阀） | Overcurrent in digital output (turntable brake solenoid valve) |
| 410B | 备用电磁线圈2（数字输出）过电流 | Spare solenoid coil 2 (digital output) overcurrent |
| 4201 | 发动机速度异常 | Engine speed abnormal |
| 4202 | 连到机体接地的发动机冷却液温度传感器短路 | Engine coolant temperature sensor connected to body ground short circuit |
| 4203 | 连到机体接地的液压油温度传感器短路 | Hydraulic oil temperature sensor connected to body ground short circuit |
| 4204 | 连到机体接地的泵输送压力PWM传感器短路 | Pump delivery pressure PWM sensor connected to body ground short circuit |
| 4205 | 连到机体接地的备用PWM传感器1短路 | Spare PWM sensor 1 connected to body ground short circuit |
| 4206 | 连到机体接地的备用PWM传感器2短路 | Spare PWM sensor 2 connected to body ground short circuit |
| 4207 | 通电中泵输送压力PWM传感器开路 | Pump delivery pressure PWM sensor open circuit during power-on |
| 420A | 连到机体接地燃油传感器开路 | Fuel sensor connected to body ground open circuit |
| 420B | 连到蓄电池电压的燃油传感器开路或短路 | Fuel sensor connected to battery voltage open or short circuit |
| 420C | 供电过低（低于23伏） | Power supply too low (below 23 volts) |
| 420D | 供电过高（高于32伏） | Power supply too high (above 32 volts) |
| 420E | 发动机速度旋钮不在10个指定的位置之一 | Engine speed knob is not in one of the 10 designated positions |
| 4301 | 交流发电机和速度传感器数据不符1（交流发电机异常） | Alternator and speed sensor data mismatch 1 (alternator abnormal) |
| 4302 | 交流发电机和速度传感器数据不符2（速度传感器异常） | Alternator and speed sensor data mismatch 2 (speed sensor abnormal) |
| 4303 | 发动机失速 | Engine stall |
| A201 | 监控器通信异常 | Monitor communication abnormal |
| A202 | 监控器响应控制器的信号时间过长 | Monitor takes too long to respond to controller signal |
| A203 | 控制器中通信异常 | Communication abnormal in controller |
| A20D | ADEM通讯中断 | ADEM communication interrupted |
CAT320D Excavator Fault Codes Table (卡特320D挖掘机故障代码表)
1. 320D Module Identification (320D 模块标识)
| Fault Code (故障代码) | Description (描述) | English Translation (英文翻译) |
|---|---|---|
| 39 | 发动机和泵控制器 | Engine and pump controller |
2. 320D Fault Mode Identification (FMI) (320D 故障模式标识(FMI))
| Fault Code (故障代码) | Description (描述) | English Translation (英文翻译) |
|---|---|---|
| OO | 数据有效,但高于正常运行值 | Data valid, but above normal operating range |
| Ol | 数据有效,但低于正常运行值 | Data valid, but below normal operating range |
| 02 | 信号错误(数据不稳定、间断或有错误) | Signal error (data unstable, intermittent, or incorrect) |
| 03 | 电压高于正常值 | Voltage above normal |
| 04 | 电压低于正常值 | Voltage below normal |
| 05 | 电流低于正常值 | Current below normal |
| 06 | 电流高于正常值 | Current above normal |
| 07 | 机械系统反应不正常 | Mechanical system response abnormal |
| 08 | 信号异常(频率、脉冲宽度或周期异常) | Signal abnormal (frequency, pulse width, or period abnormal) |
| 09 | 更新异常 | Update abnormal |
| 10 | 变化速率异常 | Rate of change abnormal |
| 11 | 不能识别故障模式 | Cannot identify fault mode |
| 12 | 设备或部件损坏 | Equipment or component damaged |
| 13 | 校准失败 | Calibration failed |
| 14 | 平行计量故障 | Parallel metering fault |
| 15 | 平行计量故障 | Parallel metering fault |
| 16 | 平行计量无效 | Parallel metering invalid |
| 17 | 模组(程序)没有回应 | Module (program) not responding |
| 18 | 传感器电源故障 | Sensor power failure |
| 19 | 接收网络数据错误 | Receiving network data error |
| 20 | 平行计量故障 | Parallel metering fault |
3. 320D Component Identification (CID) - Part 1 (320D 部件标识(CID) - 第一部分)
| Fault Code (故障代码) | Description (描述) | English Translation (英文翻译) |
|---|---|---|
| 0041 | 8V电源 | 8V power supply |
| 0096 | 燃油油位传感器 | Fuel level sensor |
| Oll0 | 发动机冷却液温度传感器 | Engine coolant temperature sensor |
| 0167 | 交流发电机 | Alternator |
| 0168 | 系统电源 | System power supply |
| 0190 | 发动机转速传感器 | Engine speed sensor |
| 0246 | CAN数据线 | CAN data line |
| 0247 | SAE J1939数据线 | SAE J1939 data line |
| 0248 | 卡特 彼勒数据线 | Caterpillar data line |
| 0254 | 电子控制模块(ECM) | Electronic Control Module (ECM) |
| 0262 | sv传感器电源 | sv sensor power |
| 0271 | 报警装置 | Alarm device |
| 0291 | 发动机冷却风扇电磁阀 | Engine cooling fan solenoid valve |
| 0362 | 发动机变速风扇控制电磁阀 | Engine variable speed fan control solenoid valve |
| 0374 | 回转制动电磁阀 | Swing brake solenoid valve |
| 0485 | 发动机风扇复原电磁阀 | Engine fan reset solenoid valve |
4. 320D Component Identification (CID) - Part 2 (320D 部件标识(CID) - 第二部分)
| Fault Code (故障代码) | Description (描述) | English Translation (英文翻译) |
|---|---|---|
| 0544 | 发动机冷却风扇变速电磁阀 | Engine cooling fan variable speed solenoid valve |
| 0581 | 动力换挡压力比例电磁阀 | Power shift pressure proportional solenoid valve |
| 0586 | 发动机油门盘 | Engine throttle dial |
| 0588 | 仪表显示系统 | Instrument display system |
| 0590 | ECM | ECM |
| 0598 | 行走速度转换电磁阀 | Travel speed change solenoid valve |
| 0600 | 液压油温度传感器 | Hydraulic oil temperature sensor |
| 0735 | 重载举升电磁阀 | Heavy lift solenoid valve |
| 1129 | 右侧附件踏板传感器 | Right attachment pedal sensor |
| 1130 | 左侧附件踏板传感器 | Left attachment pedal sensor |
| 1160 | 液压锁止电磁阀 | Hydraulic lock solenoid valve |
| 1178 | 机械超载报警压力传感器 | Mechanical overload alarm pressure sensor |
| 1522 | 2号溢流阀单向阀电磁阀 | Relief valve No. 2 check valve solenoid valve |
| 1523 | 1号溢流阀单向阀电磁阀 | Relief valve No. 1 check valve solenoid valve |
| 1525 | 直线行走电磁阀 | Straight travel solenoid valve |
| 1590 | 主液压泵输出限制压力电磁阀 | Main hydraulic pump output limiting pressure solenoid valve |
| 1593 | 1号附属阀伸出压力电磁阀 | Auxiliary valve No. 1 extend pressure solenoid valve |
| 1594 | 2号附属阀伸出压力电磁阀 | Auxiliary valve No. 2 extend pressure solenoid valve |
| 1595 | 3号附属阀压力电磁阀 | Auxiliary valve No. 3 pressure solenoid valve |
| 1596 | 1号附属阀收回压力电磁阀 | Auxiliary valve No. 1 retract pressure solenoid valve |
| 1597 | 2号附属阀收回压力电磁阀 | Auxiliary valve No. 2 retract pressure solenoid valve |
| 1598 | 3号附属阀取消压力电磁阀 | Auxiliary valve No. 3 cancel pressure solenoid valve |
| 1609 | F2模式阀回路反馈压力传感器 | F2 mode valve circuit feedback pressure sensor |
| 1657 | 左操纵杆顶部按钮 | Left joystick top button |
| 1658 | 右操纵杆顶部按钮 | Right joystick top button |
| 1665 | 1号可调压力溢流阀电磁阀 | Adjustable pressure relief valve No. 1 solenoid valve |
| 1666 | 2号可调压力溢流阀电磁阀 | Adjustable pressure relief valve No. 2 solenoid valve |
| 1931 | 选装回路 | Optional circuit |
| 2265 | 泵输出压力传感器l | Pump output pressure sensor 1 |
| 2266 | 泵输出压力传感器2 | Pump output pressure sensor 2 |
| 2275 | 破碎锤回油路线控制(直通油箱)电磁阀 | Hammer return oil line control (direct to tank) solenoid valve |
| 2280 | 行走报警继电器 | Travel alarm relay |
| 2300 | 开关面板 | Switch panel |
| E0 | 没有故障 | No fault |
| E1 | 发动机机油压力过低 | Engine oil pressure too low |
| E2 | 发动机水温过高 | Engine water temperature too high |
| E3 | 液压油温度过高 | Hydraulic oil temperature too high |
| E4 | 蓄电池电压过高 | Battery voltage too high |
| E5 | 发电机P或W接点断开 | Alternator P or W terminal disconnected |
| E6 | 转速传感器安装不正确或回路断线 | Speed sensor incorrectly installed or circuit disconnected |
| E7 | 发动机转速不正常 | Engine speed abnormal |
| E9 | 油门电机反馈电压过低 | Throttle motor feedback voltage too low |
| E10 | 油门反馈传感器电路对电源短路或断路 | Throttle feedback sensor circuit shorted to power or open |
| E11 | 油门反馈传感器对地短路 | Throttle feedback sensor shorted to ground |
| E12 | 油门反馈传感器电压不稳 | Throttle feedback sensor voltage unstable |
Troubleshooting Your Caterpillar Excavator: Understanding Fault Codes
When operating heavy machinery like Caterpillar (CAT) excavators, encountering fault codes can be a common occurrence. These codes are essential indicators that help identify potential issues within the machine, allowing for timely maintenance and preventing further damage. This guide, brought to you by Growshine International, your trusted partner for engineering machinery parts, heavy truck parts, agricultural machinery parts, and auto parts, provides a detailed breakdown of fault codes for the popular CAT320B and CAT320D excavator models.
At Growshine International, we specialize in the import and export of high-quality machinery parts. Understanding these fault codes is the first step towards efficient maintenance and ensuring the longevity of your equipment. Our extensive catalog includes a wide range of components to address any of these issues, ensuring your operations run smoothly.
Key Caterpillar Excavator Fault Codes Explained
Let's delve into some common fault codes you might encounter:
Engine Oil Pressure Too Low (发动机机油压力过低 - Низкое давление масла в двигателе): Code 1301 on the CAT320B and E1 on the CAT320D indicate a critical issue with engine lubrication. For instance, on a Caterpillar 345D excavator, this could be due to a faulty 风扇马达 (fan motor - вентиляторный двигатель).
Engine Coolant Temperature Too High (发动机冷却液温度过高 - Слишком высокая температура охлаждающей жидкости двигателя): Code 1302 for the CAT320B and E2 for the CAT320D signify overheating, potentially affecting performance. A possible cause in a Komatsu PC200-8 could be a worn-out 风扇皮带 (fan belt - приводной ремень вентилятора).
Hydraulic Oil Temperature Too High (液压油温度过高 - Слишком высокая температура гидравлического масла): Code 1303 on the CAT320B and E3 on the CAT320D points to issues within the hydraulic system. For example, in a Volvo LX25, a malfunctioning 液压泵 (hydraulic pump - гидравлический насос) can lead to this.
Battery Voltage Abnormal (蓄电池电压异常 - Аномальное напряжение аккумулятора): Code 1305 on the CAT320B and E4 on the CAT320D indicates electrical system problems.
Engine Speed Sensor (发动机转速传感器 - Датчик оборотов двигателя): CID 0190 in the CAT320D is crucial for monitoring engine RPM.
Hydraulic Lock Solenoid Valve (液压锁止电磁阀 - Электромагнитный клапан гидравлической блокировки): CID 1160 in the CAT320D controls the hydraulic system's locking mechanism.
Growshine International: Your Reliable Partner for Machinery Parts
Growshine International is a leading import and export company specializing in a wide range of machinery parts. We understand the critical role that efficient maintenance plays in your operations, and we are committed to providing you with high-quality components for your Caterpillar excavators and other heavy equipment.
Our main products include:
Engineering Machinery Parts (工程机械配件)
Heavy Truck Parts (重卡配件)
Agricultural Machinery Parts (农机配件)
Auto Parts (汽车配件)
We offer a comprehensive range of components, including filters, pumps, sensors, valves, and much more, to address the various fault codes your CAT320D and CAT320B excavators might display.
Long-Tail Keywords for Your Search
To help you find the exact parts you need, here are some relevant long-tail keywords related to our main business:
Caterpillar excavator engine parts
CAT 320B hydraulic components
320D excavator electrical parts
Growshine International machinery parts supplier
Heavy equipment parts import export
Agricultural machinery components online
Auto parts wholesale distributor
Reliable engineering machinery parts
Genuine Caterpillar spare parts
Aftermarket excavator parts
Heavy truck engine components
Farm equipment parts supplier
Automotive parts online store
Global machinery parts exporter
CAT 320B fault code troubleshooting
320D excavator maintenance parts
Heavy duty truck parts online
Agricultural machinery repair parts
Affordable auto parts supplier
Industrial machinery parts exporter
More Examples of Part Definitions (更多配件名词解释)
卡特彼勒 3306 喷油器 (Caterpillar 3306 Injector - Форсунка Caterpillar 3306): This component is responsible for delivering fuel into the cylinders of a Caterpillar 3306 engine, crucial for combustion.
沃尔沃 D7E 曲轴 (Volvo D7E Crankshaft - Коленчатый вал Volvo D7E): The crankshaft in a Volvo D7E engine converts the linear motion of the pistons into rotational motion.
久保田 V1505 启动马达 (Kubota V1505 Starter Motor - Стартер Kubota V1505): The starter motor initiates the engine's rotation in a Kubota V1505 engine.
五十铃 6WG1 挖掘机发动机曲轴箱 (Isuzu 6WG1 Excavator Engine Crankcase - Картер двигателя экскаватора Isuzu 6WG1): The crankcase houses the crankshaft in an Isuzu 6WG1 excavator engine.
珀金斯 403-11 空气滤芯 (Perkins 403-11 Air Filter - Воздушный фильтр Perkins 403-11): The air filter in a Perkins 403-11 engine prevents dust and debris from entering the engine.
小松 PC1250LC-10 挖掘机操纵杆 (Komatsu PC1250LC-10 Excavator Control Lever - Рычаг управления экскаватора Komatsu PC1250LC-10): The control lever allows the operator to control the movements of a Komatsu PC1250LC-10 excavator.
道依茨 BF6M1013 发动机水泵 (Deutz BF6M1013 Engine Water Pump - Водяной насос двигателя Deutz BF6M1013): The water pump circulates coolant in a Deutz BF6M1013 engine to prevent overheating.
三一重工 SY215C 挖掘机主泵 (Sany SY215C Excavator Main Pump - Главный насос экскаватора Sany SY215C): The main pump provides hydraulic power for the various functions of a Sany SY215C excavator.
日立 EX135 挖掘机液压油缸 (Hitachi EX135 Excavator Hydraulic Cylinder - Гидравлический цилиндр экскаватора Hitachi EX135): Hydraulic cylinders in a Hitachi EX135 excavator are responsible for the movement of the boom, arm, and bucket.
现代 R225-7 挖掘机回转减速器 (Hyundai R225-7 Excavator Swing Reducer - Редуктор поворота экскаватора Hyundai R225-7): The swing reducer controls the rotation of the upper structure of a Hyundai R225-7 excavator.
Growshine International is committed to providing you with the best quality engineering machinery parts, heavy truck parts, agricultural machinery parts, and auto parts. Our dedicated team ensures efficient import and export processes, delivering the parts you need, when you need them. Contact us today to learn more about how we can support your machinery maintenance requirements.
