caterpillar fault codes

1 accessory valve retracts pressure solenoid valve, No. speed metering valve is not true when S is overspeed, Common Because of the negative torque, the torque limit is generated. AL fault codes rely upon certain setpoints. Without professional tools, it will take a lot of time to troubleshoot problems. Luis Eduardo Corzo Enriquez. This code is generated when fuel injection pump does not receive a. *Please note: Some links on this site lead to web pages operated by companies that we have affiliate relationships with. Push the emergency stop button. CMP Technology Co.,Limited has no relationship with them, and these marks on our webs are only for reference. List of Diagnostic Trouble Codes. 3 cancels the pressure solenoid valve, F2 FMI 12 - Faulty device or component The FMI code 12 indicates the following status: the electronic control unit sends a signal to another electronic unit via a data link. control button irreversible failure, Main The air filter is blocked, resulting in insufficient air input. is higher than normal or short circuit, The end, thanks for your reading! DVD/CD ROM Disk Drive. Cat diagnostic code information that follows is utilized by Caterpillar machines that are equipped rail pressure positive deviation is too high and fuel flow set value is too high, Common and troubleshooting of more faults, you can comment below the article. Sometimes, the maintenance master will not find the problem without relevant experience. circuit or system within which a problem was detected.CAT CID Code List, A failure mode identifier (FMI) is a diagnostic code that informs the service personnel of the type of data is correct but above the normal range, The This article introduces the main fault codes for the Cat 320 (BCD Series) and Caterpillar C9 details as follows: Cat 320D excavator partial fault code e Only. DESCRIPTION. MID 036 - Engine Control - Continued. 2 accessory valve retracting pressure solenoid valve, Auxiliary pedal and brake pedal signals are not trusted, Cruise ATA/J1939 Diagnostic Code Quick Reference Refer to Troubleshooting Manual for Recommended Service Procedures ... 247-11 603-11 Brake Pedal Switch #2 Fault . I have the following codes 030 96.03 113 168.04 113 299.13 - Answered by a verified Mechanic We use cookies to give you the best possible experience on our website. After a two second pause, the second sequence of flashes will identify the second digit of the diagnostic code. Email: service@sinocmp.com Title: CAT Fault codes Author: tu4196 Created Date: 8/16/2010 12:49:57 PM 2 relief valve check valve solenoid valve, No. Diagnostic Flash Codes For CAT C15 & C18 Engines Note: Always refer to operators and maintenance manual for the latest information related to engine diagnostics and troubleshooting. Uploaded by. Another benefit of an electronically controlled engine is the ability to diagnose engine malfunctions through a system of fault codes. PROCEDURE. This function allows tracking of th. The … The engine speed signal received by the controller is different from the 10 set values of the throttle disc. CAT C7-C9 ACERT Fault Code -Flashcode Cross Reference. All other marks including KOMATSU®, KOBELCO®, HITACHI®, CATERPILLAR®, CAT®, HYUNDAI®, VOLVO®, SUMITOMO®, KATO®, DAEWOO®, DOOSAN® are registered trademarks of their owners. Web: www.sinocmpexcavatorparts.com. Copyright © 2012~2020 SINOCMP. 46, Pu Pai Road, Xinlian Community, Longcheng Street, Longgang District, Shenzhen China 518172 system reaction is not normal, Signal rail pressure sensor deviation monitoring, Camshaft temperature sensor dynamic failure, Common J1939 J1939 Code Description Troubleshooting Procedure ATA Code Code This code indicates that Cat ET is not Diagnostics Exist that Require J1939 communicating on the J1939 data link. Caterpillar C15 Truck Engine B5R Fault Codes 1300 Solenoid for changing the direction of movement of the elevator 1301 The gas supply valve solenoid (GAV) in the cylinder No.1 1302 The solenoid of the valve of giving of gas (GAV) in the cylinder №2 Section 2-1 80-1042 Rev 5/2013 machine system did not respond correctly, The Many of the AL fault codes are programmable as a fault alarm or as a fault … assist service personnel in diagnosing system problems of the machine. Fault Code: Description: FMI Codes: MID 128 PID 26: Engine Fan Speed Percent: 3,8: MID 128 PID 27: EGR Valve #1 Position Sensor: 3,4,5: MID 128 PID 45: Preheater Relay Status ... CATERPILLAR SOFTWARE INSTALLATION CAT COMMUNICATION ADAPTER SOFTWARE INSTALLATION Figure 1. shift pressure proportional solenoid valve, Mechanical CODE. mode valve loop feedback pressure sensor, No. Use the "DIAGNOSTIC" Lamp or a Caterpillar electronic service tool to determine the diagnostic flash code. The sequence of flashes represents the system diagnostic message. When a fault code pops up, CAT's Uptime Center is automatically notified via an cellular link, and it alerts the truck's owner by prearranged methods, usually email or phone calls. FAULT CONDITIONS/EFFECTS. ELECTRONIC ENGINE FAULT DETECTION FLASH CODES 55 9. ENGINE ECM - CONTINUED. Therefore, understanding the meaning of these fault codes is very important for the excavator. voltage is higher than normal or suddenly high, Voltage valve No. Many excavator masters have no idea because they don’t understand the simple fault code. Because the booster protection creates a torque limit, Torque is limited due to engine protection, Torque FMI. Fuel Injection Pump. 1 adjustable pressure relief valve solenoid valve, No. hydraulic pump output limit pressure solenoid valve, No. help you answer your questions in timely. Sadi. look forward to your letter. sensor and crankshaft sensor signal deviation exceeds limit, Common *Please note: Some links on this site lead to web pages operated by companies that we have affiliate relationships with. The above is the reason for SHOOTING. The operator should note or document the circumstances (low power, vehicle/engine speed limits, excessive smoke, etc) involved during the time the lamp was ON. Cat Fault Codes | Caterpillar Fault Codes | CatFaultCodes.com CAT C13, C15, and C18 Tier 4 Final Engine Fault Codes N/A N/A N/A N/A N/A N/A N/A 80-1275 Page 1 of 14 Rev: 03/2019. Copyright © 2019 All rights reserved. with Caterpillar electronic controls.Component identifiers, failure mode identifiers, and module identifiers are pieces of information that USING ELECTRONIC TECHNICIAN (ET) Figure 2. Use the following procedure to retrieve the diagnostic codes if the engine is equipped with a "DIAGNOSTIC" lamp: Turn the ignition key to the ON position. FAULT. A failure mode identifier (FMI) is a diagnostic code that informs the service personnel of the type of problem that has been detected within a circuit or system. 2.1.1 Emergency Stop Button The emergency stop button is in the OUT position for normal engine operation. Cat ET must 154-14 Service Tool Connection be communicating on the J1939 data. By continuing to use this site you consent to the use of cookies on your device as described … We will 1 accessory valve extends pressure solenoid valve, Auxiliary rail metering device fuel flow set point is too low, Common Reciprocating Compressor for Ttc Sip Asb Final. In the Diagnostic Trouble Codes Text Translations provided by: PowerView Model PV101 software version Murphy 1.00.06 PowerView Model PV100 software version Murphy 2.09 Use the Caterpillar Electronic Technician (ET) in order to determine the codes that are active or logged. Carousel Previous Carousel Next. is lower than normal or open circuit, Current CatFaultCodes.com is not a part of Cat brand. diagnosed a fault.CAT MID Code List, Cat Compact Track And Multi Terrain Loader Fault Codes. the frequent fault failures. The FMI code 11 appears when the electronic unit registers more than one FMI code for one fault. If you want to know more about the specific causes variable speed fan control solenoid valve, Engine 0007 00. 2 extends pressure solenoid valve, Auxiliary oil return route control (straight through tank) solenoid valve, Accelerator In some cases, we may receive compensation for referring traffic. In some cases, we may receive compensation for referring traffic. Besides identifying fault codes, the software gives the user the ability to change the Caterpillar engine's parameters, perform diagnostic tests on the engine, and calibrate sensors and controls. AL fault codes are not stored in the fault log of the GSC. Its stable quality has won a very good reputation. CATERPILLAR ENGINE FAULT CODE DIAGNOSTICS SCROLL' DIAGNOSTIC XX ENGAGE AND DISENGAGE WARNING ONLY'" oo Troubleshooting with a Diagnostic Code 01443052 Flash Codes SMCS Code: 1000; 1900 Flash codes are used to represent diagnostic codes in the electronic system in order to alert the operator that a problem exists. cooling fan shift solenoid valve, Power CAT is a trademark that we trust. rail pressure is greater than the maximum limit, Common The YELLOW lamp will flash to indicate a two digit flash code and the SET/RESUME switch may be released. The fault codes include specific engine fault conditions. Caterpillar C15 Truck Engine B5R Fault Codes List See also: Caterpillar PDF Service Manuals Diagnostic Trouble Codes SMCS - 1900 Table 1 lists the diagnostic trouble codes that apply to the engines that are covered in this manual. main fault codes for the Cat 320 (BCD Series) and Caterpillar C9 Emerson Juncom. Popular in Laws. Event codes identify significant events that occur to the systems of the machine. Take these measures to solve black engine smoke. End Of Diagnostic Code Display. CAT C13, C15, and C18 Tier 4 Final Engine Fault Codes N/A N/A N/A N/A N/A N/A N/A 80-1275 Page 1 of 14 Rev: 03/2019. NOTE:Catfaultcodes.com indicates the potential effect on engine performance with ACTIVE fault codes. minimum number of injection cylinders has not been reached, Injector In the end, most of the masters will choose to hire a professional maintenance technician to handle all the problems. When the fault code form is displayed on the dashboard, it is not known whether there is a problem with one component or the entire system appears to be a problem. See Systems Operation, "Service Mode" for more information on setpoints. Address: RM.501 5F No.8 Weishi Alley, Longteng Industrial Park, Gangbei, Ailian, Longgang Distict, Shenzhen China 518172, Address: Caterpillar's Code of Conduct. RM.301 3F Building A, No. Table 1. The ECM stores the data from the events. problem that has been detected within a circuit or system.CAT FMI Code List, A module identifier (MID) is a diagnostic code that identifies the electronic control module that has PAGE. CATERPILLAR REGENERATION SYSTEM 33. valve No. Contact your local Cat dealer for more information. data is correct but below the normal range, Data TROUBLE-CID. Cat OBD,EDC,DTC and Engine Trouble codes informations. control unit of ECU: CY33X(1) fault, Injector J1939 Code and Description CDL Code and Description CAT C13, C15, and C18 Tier 4 Final Engine Fault Codes 108-21 3528 -21 Barometric Pressure : Calibration Required Atmospheric Pressure Sensor : Calibration Required CAT excavators are among the top five users in the world. MAINTENANCE 56 ... Local, or Federal Codes, Standards or other requirements. MSD Quick Start Guide. A diagnostic code also indicates the nature of the problem for you, and you can see what is the code meaning with CatFaultCodes.com service. The engine will not start when the button is locked. rail pressure is below the minimum limit, Common Uploaded by. is limited due to the fuel injection system’s fuel injection limit. 1 relief valve check valve solenoid valve, Main 2 adjustable pressure relief valve solenoid valve, Breaker rail pressure negative deviation too high (minimum flow), Common flow control proportional solenoid valve, The TROUBLESHOOTING WITH A DIAGNOSTIC CODE - CONTINUED. Cat Diagnostic codes are used by the electronic system in order to alert the operator that a problem exists. error (data is unstable, intermittent or error), Mechanical Insufficient air input due to a clogged air filter. Caterpillar Engine Errors And Trouble Codes Cat Diagnostic codes are used by the electronic rail metering valve positive short circuit, Common The engine has a displacement of 928 cubic inches, weighs 3,090 pounds, and generates up to 625 horsepower and 2,000 foot pounds of torque. The engine does not need to be started in order to view codes. fifth cylinder injector malfunction, The In this way, a lot of our time and financial resources are wasted. Displaying Diagnostic Fault Codes Figure 3. FL Driverhandbook 17. relay failure (interrupted after shutdown), Coolant In most cases it is not necessary to stop the engine because of an intermittent code. KENR9126 September 2010 Troubleshooting M190C, M216C, M250C and M300C Marine Engine PJ (Engine) cat tellehandler (mainitou) fault code 437 , 102.2 when second gear selected and machine under load no fault in first gear #124 Laity mbye ( Saturday, 17 October 2020 00:47 ) All rights reserved | Powered by CMP Technology Co, Ltd, Hitachi fault codes for sensor on excavator, 5 Reasons for the Failure of the Excavator Controller, The speed sensor is not installed correctly or the circuit is open, Throttle feedback sensor circuit shorts or opens the power supply, Throttle feedback sensor shorted to ground, Throttle feedback sensor voltage is unstable, Throttle reserve switch in standby position or throttle motor circuit open, Proportional pressure reducing valve shorted to ground, Proportional pressure reducing valve circuit shorts the power supply, Proportional pressure reducing valve circuit open circuit, Water temperature sensor shorted to ground, Hydraulic oil temperature sensor shorted to ground. Phone: 028-83397306 2 MID 128 - CAT MID 128 - CAT CAT PID/ SID FMI Fault Code Fault Description 1 11 72 Cylinder 1 Fault 2 11 72 Cylinder 2 Fault 3 11 73 Cylinder 3 Fault 4 11 73 Cylinder 4 Fault 5 11 74 Cylinder 5 Fault 6 11 74 Cylinder 6 Fault 22 13 42 Check Timing Sensor Calibration 30 8 29 Invalid PTO Throttle Signal 13 29 PTO Throttle Sensor Calibration 41 3 21 Volt Supply Above Normal 4 21 Volt Supply … However, we recommend that the operator retrieve the code(s) and refer to the chart in order to identify the nature of the event. is lower than normal or suddenly low, Current Insufficient combustor compression pressure. The software can be purchased on its own, or as part of a kit containing a laptop and a diagnostic adapter. A component identifier (CID) is a diagnostic code that informs the service personnel of the specific rail oil pump metering valve Power Stage failure, Common Uploaded by. 1684 08. anomaly (frequency, pulse width or period anomaly), Engine Don't forget ! ... E0875 Low System Voltage Event Code (Levels 1, 2, and 3). control unit of ECU: CY33X(2) fault. shift proportional pressure reducing valve, Negative The difference between the throttle disc set value and the actual speed exceeds lOOr/min, Data output circuit shorts the power supply, Throttle motor action lags behind throttle disc 2.5s, The controller does not match the mechanical model, Governor actuator feedback sensor shorted to body ground, Governor actuator feedback signal is unstable, Governor actuator feedback signal is biased, Too much power to the controller (43 volts), Monitor power supply (digital output) over current, Overcurrent in digital output (ditch solenoid valve), Overcurrent in digital output (fine tuning control solenoid valve), Overcurrent in digital output (driving speed change solenoid valve), Overcurrent in digital output (driving alarm), Spare solenoid 1 (digital output) overcurrent, Overcurrent in digital output (turntable brake solenoid valve), Spare solenoid 2 (digital output) overcurrent, Short circuit of engine coolant temperature sensor connected to body ground, Short circuit of hydraulic oil temperature sensor connected to the body ground, Pump delivery pressure PWM sensor shorted to the body ground, Standby PWM sensor 1 connected to the body ground is shorted, Standby PWM sensor 2 connected to the body ground is shorted, Pumping pressure PWM sensor open circuit during power-on, Connected to the body ground fuel sensor open circuit, The fuel sensor connected to the battery voltage is open or shorted, Power supply is too low (less than 23 volts), Power supply is too high (above 32 volts), Engine speed knob is not in one of 10 specified positions, Alternator and speed sensor data does not match 1 (alternator abnormality), Alternator and speed sensor data does not match 2 (speed sensor error), The monitor responds to the controller for too long a signal, Communication abnormality in the controller, Power Mobile/Whatsapp: +8615328181468 data is valid but higher than the normal running value, Data When a caterpillar engine experiences a malfunction, there will be a series of flashes by the engine diagnostic lamp. 3, No. is valid but below normal operating value, Signal overload warning pressure sensor, No. is unstable, intermittent or incorrect, The rail fuel pressure drop rate is too high, Common Caterpillar C15s are six-cylinder, in-line, heavy-duty engines for fire engines, buses, trucks and heavy equipment. J1939 Code and Description CDL Code and Description CAT C13, C15, and C18 Tier 4 Final Engine Fault Codes 108-21 3528 -21 Barometric Pressure : Calibration Required valve pressure solenoid valve No. Especially for some small faults, you don’t have to go to the maintenance factory, you can follow the prompts to eliminate the problem. SINOCMP® CMP® are service and trade mark of CMP Technology Co.,Limited. Our Worldwide Code of Conduct, first published in 1974, defines what we stand for and believe in, documenting the uncompromisingly high ethical standards our company has upheld since its founding in 1925. Count the first sequence of flashes in order to determine the first digit of the diagnostic code. rail metering valve negative short circuit, The However, in the processing of using, the excavator alarm occurs from time to time. Documentation may be useful for future reference, and in order to help troubleshoot the situation. e history of the machine. Compensation for referring traffic caterpillar REGENERATION system 33 E0875 Low system Voltage Event code Levels... Brake Pedal Switch # 2 fault and 3 ) more than one FMI code one... As part of a kit containing a laptop and a diagnostic ADAPTER air filter Trouble informations! The first sequence of flashes represents the system diagnostic message communicating on the J1939 data questions., you can comment below the article: Catfaultcodes.com indicates the potential on! 2 extends pressure solenoid valve, No are six-cylinder, in-line, heavy-duty engines for fire engines,,! When fuel injection pump does not receive a different from the 10 values. Digit flash code and the SET/RESUME Switch may be useful for future Reference, and 3.... Cmp Technology Co., Limited your questions in timely represents the system diagnostic message be useful future! Faults, you can comment below the article stored in the fault log of the masters choose. Many excavator masters have No idea because they don ’ t understand the simple fault code codes.... In-Line, heavy-duty engines for fire engines, buses, trucks and heavy equipment situation! The codes that are active or logged relationship with them, and 3 ), heavy-duty engines for fire,! Or as a fault alarm or as a fault … caterpillar REGENERATION system 33, 2, and in to... Cat COMMUNICATION ADAPTER SOFTWARE INSTALLATION Figure 1 Local, or Federal codes, or! Understand the simple fault code compensation for referring traffic problem exists compensation for referring traffic 247-11 Brake. A laptop and a diagnostic ADAPTER the end, most of the machine limit. Above is the reason for the excavator engine operation important for the frequent fault failures valve solenoid valve, valve... Series of flashes in order to view codes see Systems operation, Service. Federal codes, Standards or other requirements 56... Local, or as part of caterpillar fault codes kit a. This code is generated when fuel injection pump does not receive a, Limited has No relationship them! Not necessary to stop the engine will not find the problem without relevant experience need be... Engine because of the machine occurs from time to troubleshoot caterpillar fault codes flashes will identify the second of. Of a kit containing a laptop and a diagnostic ADAPTER to handle all the problems purchased on its,. Frequent fault failures only for Reference, Main hydraulic pump caterpillar fault codes limit pressure solenoid valve, No a! In the OUT position for normal engine operation J1939 data a series of flashes by electronic... For more information on setpoints in insufficient air input due to a clogged air filter is blocked resulting. In some cases, we may receive compensation for referring traffic and engine Trouble codes.., buses, trucks and heavy equipment to determine the codes that are active or logged engines buses! Service Mode '' for more information on setpoints to the Systems of the machine cat OBD,,... Reference, and in order to help troubleshoot the situation will not start when button! Are wasted received by the electronic unit registers more than one FMI code for one fault valve extends solenoid! The controller is different from the 10 set values of the negative torque, the maintenance master not...... 247-11 603-11 Brake Pedal Switch # 2 fault can be purchased on its own, or as fault! Valve retracting pressure solenoid valve, Auxiliary valve No al fault codes not... Trade mark of CMP Technology Co., Limited 3 ) using, the excavator occurs... Insufficient air input some cases, we may receive compensation for referring traffic lamp will flash to a! Codes that are active or logged limit is caterpillar fault codes when fuel injection pump does not receive a Local! To troubleshoot problems # 2 fault will help you answer your questions in.... Log of the diagnostic code the problems maintenance Technician to handle all the problems valve No... Does not receive a, understanding the meaning of these fault codes are programmable as fault... Want to know more about the specific causes and Troubleshooting of more faults, you can below! Torque limit is generated when fuel injection pump does not need to be started in order to the. The excavator alarm occurs from time to troubleshoot problems there will be a series of represents., heavy-duty engines for fire engines, buses, trucks and heavy.. Generated when fuel injection pump does not need to be started in order determine. Pressure solenoid valve, No, Standards or other requirements C15s are six-cylinder,,! Dtc and engine Trouble codes informations does not need to be started in order to the! Edc, DTC and engine Trouble codes informations only for Reference order to help troubleshoot the.... To view codes the YELLOW lamp caterpillar fault codes flash to indicate a two pause... If you want to know more about the specific causes and Troubleshooting of faults... Valve solenoid valve, Auxiliary valve No ( ET ) in order to determine the diagnostic code Reference! Master will not find the problem without relevant experience cat COMMUNICATION ADAPTER SOFTWARE cat... Frequent fault failures in insufficient air input due to a clogged air filter, the. Laptop and a diagnostic ADAPTER Procedures... 247-11 603-11 Brake Pedal Switch # fault! The `` diagnostic '' lamp or a caterpillar electronic Technician ( ET ) in order to alert operator... Fmi code 11 appears when the electronic system in order to determine the diagnostic code code! Users in the world the simple fault code -Flashcode Cross Reference SOFTWARE can be purchased on its,! Excavator masters have No idea because they don ’ t understand the simple fault code -Flashcode Cross Reference to started. A professional maintenance Technician to handle all the problems identify the second digit of the GSC however in. Normal engine operation the controller is different from the 10 set values the., No to alert the operator that a problem exists SET/RESUME Switch may be released of. For Recommended Service Procedures... 247-11 603-11 Brake Pedal Switch # 2.. Determine the diagnostic code the YELLOW lamp will flash to indicate a two second pause, the master. Engines for fire engines, buses, trucks and heavy equipment reason for the frequent fault failures Voltage Event (. By the engine diagnostic lamp master will not find the problem without relevant experience fault... Malfunction, there will be a series of flashes by the electronic system order! Fault codes are programmable as a fault … caterpillar REGENERATION system 33 `` diagnostic '' lamp or a caterpillar experiences... Code Quick Reference Refer to Troubleshooting Manual for Recommended Service Procedures... 247-11 603-11 Brake Pedal #..., the second sequence of flashes by the electronic system in order alert! Answer your questions in timely stored in the processing of using, the second sequence of flashes in order determine! Engine diagnostic lamp INSTALLATION Figure 1, you can comment below the article order to troubleshoot... Et must 154-14 Service tool Connection be communicating on the J1939 data Reference, and marks. Procedures... 247-11 603-11 Brake Pedal Switch # 2 fault solenoid valve, No communicating the... We may receive compensation for referring traffic, No and trade mark of CMP Technology Co., Limited heavy.... Using, the second digit of the throttle disc Technology Co., Limited has No relationship with them, in. Many of the machine electronic Service tool Connection be communicating on the J1939 data valve retracting pressure valve... The negative torque, the excavator alarm occurs from time to time on the J1939 data than one FMI 11. On engine performance with active fault codes are not stored in the OUT position for normal engine operation alert operator. In order to help troubleshoot the situation choose to hire a professional maintenance Technician to handle all the.. Has won a very good reputation cat diagnostic codes are not stored in the world Technician ET... Operator that a problem exists purchased on its own, or as part of a kit containing a and. Valve retracting pressure solenoid valve, Auxiliary valve No handle all the.. Received by the engine diagnostic lamp need to be started in order to alert operator... Systems of the GSC cases it is not necessary to stop the engine diagnostic lamp the codes that active. Meaning of these fault codes are programmable as a fault … caterpillar REGENERATION system 33, EDC, and! Diagnostic '' lamp or a caterpillar electronic Service tool to determine the first sequence of flashes by the because! Not receive a the meaning of these fault codes are not stored in the end most! The engine because of an intermittent code ACERT fault code -Flashcode Cross Reference Levels 1, 2 and... Alert the operator that a problem exists frequent fault failures if you want to know more about the specific and! Emergency stop button is locked diagnostic flash code system Voltage Event code ( Levels,... Of an intermittent code Catfaultcodes.com indicates the potential effect on engine performance with active fault codes are used the... Codes, Standards or other requirements, Main hydraulic pump output limit pressure valve. The potential effect on engine performance with active fault codes are not stored in the end, most the! ( ET ) in order to alert the operator that a problem exists unit. Cases, we may receive compensation for referring traffic and Troubleshooting of faults... For normal engine operation compensation for referring traffic these fault codes is very important for the fault! More about the specific causes and Troubleshooting of more faults, you can comment below the article of... Cmp® are Service and trade mark of CMP Technology Co., Limited has relationship. Alarm occurs from time to troubleshoot problems and heavy equipment 3 ) injection!
caterpillar fault codes 2021