Heavy Equipment Fault Codes

1,480 codes
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All Caterpillar (1,290) Komatsu (57) John Deere (52) Volvo (43) Doosan (21) JCB (9) Case (8)
Code Brand Model Error / Alarm Type Severity Action
461-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 461 FMI 3 - Fuel Water Separator Sensor Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-124-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 124 FMI 5 - Pilot Pressure: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-158-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 158 FMI 4 - Armrest Position Switch: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-92-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 92 FMI 2 - Total Tattletale: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
CID-140-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 140 FMI 1 - Right Track Position Sensor: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
CID-113-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 113 FMI 4 - Axle Oil Temperature: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-55-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 55 FMI 1 - DEF Tank Temperature: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
91-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 91 FMI 16 - Injection Actuation Pressure Control Valve (Open) Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-102-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 102 FMI 2 - Percent Engine Torque: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
26-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 26 FMI 3 - Inlet Manifold Pressure Sensor Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-93-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 93 FMI 3 - Trip Tattletale: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
CID-171-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 171 FMI 4 - High Speed Travel Switch: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
253-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 253 FMI 5 - Fuel Injector (Cylinder 3) Current Below Normal/Open Circuit heavy-equipment Major View →
291-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 291 FMI 4 - Transmission Temperature Sensor Voltage Below Normal/Shorted Low heavy-equipment Major View →
CID-95-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 95 FMI 2 - Total Fuel Used: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
CID-38-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 38 FMI 8 - Starter Relay: Abnormal Frequency, Pulse Width, or Period heavy-equipment Major View →
491-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 491 FMI 17 - Transmission Filter Bypass Switch Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
40-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 40 FMI 4 - Engine Oil Level Sensor Voltage Below Normal/Shorted Low heavy-equipment Major View →
111-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 111 FMI 8 - Battery Voltage Abnormal Frequency/Pulse Width heavy-equipment Major View →
168-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 168 FMI 4 - Engine ECM Voltage Below Normal/Shorted Low heavy-equipment Major View →
CID-1-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 1 FMI 4 - Engine Oil Pressure: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
441-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 441 FMI 8 - Engine Warning Indicator Circuit Abnormal Frequency/Pulse Width heavy-equipment Major View →
411-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 411 FMI 4 - Radiator Coolant Level (Low) Voltage Below Normal/Shorted Low heavy-equipment Major View →
CID-110-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 110 FMI 4 - Air Filter Differential Pressure: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
16-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 16 FMI 17 - Engine Oil Pressure Sensor Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-32-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 32 FMI 6 - Brake Oil Pressure: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
CID-52-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 52 FMI 3 - Selective Catalytic Reduction (SCR) NOx Sensor: Voltage Above Normal, or Shorted to High Source heavy-equipment Major View →
CID-128-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 128 FMI 5 - Stick Cylinder Head Pressure: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-53-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 53 FMI 4 - SCR Dosing Unit: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
321-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 321 FMI 8 - Brake Oil Pressure (Low) Abnormal Frequency/Pulse Width heavy-equipment Major View →
CID-35-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 35 FMI 3 - Hydraulic Fan Solenoid: Voltage Above Normal, or Shorted to High Source heavy-equipment Major View →
94-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 94 FMI 6 - Engine Speed-Timing Sensor (Injection Pump) Current Above Normal/Grounded Circuit heavy-equipment Major View →
CID-89-FMI-13 Caterpillar CAT Electronic Control Module Caterpillar CID 89 FMI 13 - Cylinder Cutout #6: Out of Calibration heavy-equipment Major View →
CID-6-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 6 FMI 3 - Engine Oil Temperature: Voltage Above Normal, or Shorted to High Source heavy-equipment Major View →
CID-65-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 65 FMI 3 - Engine Brake Solenoid #2: Voltage Above Normal, or Shorted to High Source heavy-equipment Major View →
41-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 41 FMI 18 - Air Inlet Heater Relay Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
27-15 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 27 FMI 15 - Atmospheric Pressure Sensor Data Valid But Above Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-153-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 153 FMI 8 - Radio Signal Strength: Abnormal Frequency, Pulse Width, or Period heavy-equipment Minor View →
110-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 110 FMI 18 - Radiator Coolant Temperature Sensor Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-162-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 162 FMI 2 - Joystick Position #4: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
491-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 491 FMI 8 - Transmission Filter Bypass Switch Abnormal Frequency/Pulse Width heavy-equipment Major View →
46-15 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 46 FMI 15 - ECM Connector (Rack Sensor) Data Valid But Above Normal Operating Range (Least Severe) heavy-equipment Info View →
471-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 471 FMI 6 - Engine Over-speed Protection Current Above Normal/Grounded Circuit heavy-equipment Major View →
172-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 172 FMI 6 - Fuel Injection Actuation Pressure (High) Current Above Normal/Grounded Circuit heavy-equipment Major View →
71-2 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 71 FMI 2 - Fuel Injection Quantity Data Erratic/Intermittent heavy-equipment Minor View →
471-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 471 FMI 18 - Engine Over-speed Protection Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-122-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 122 FMI 6 - Fan Pump Pressure: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
CID-77-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 77 FMI 5 - Injection Actuation Pressure: Current Below Normal, or Open Circuit heavy-equipment Critical View →
37-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 37 FMI 17 - Crankcase Pressure Sensor Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-8-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 8 FMI 6 - Intake Manifold Pressure: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
CID-102-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 102 FMI 5 - Percent Engine Torque: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-175-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 175 FMI 2 - Hammer Mode Switch: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
CID-78-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 78 FMI 8 - Injection Actuation Pressure Control Valve: Abnormal Frequency, Pulse Width, or Period heavy-equipment Major View →
CID-148-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 148 FMI 5 - GPS Position Longitude: Current Below Normal, or Open Circuit heavy-equipment Minor View →
16-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 16 FMI 16 - Engine Oil Pressure Sensor Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
55-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 55 FMI 8 - Injection Actuation Pressure Control Valve (Current) Abnormal Frequency/Pulse Width heavy-equipment Major View →
CID-41-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 41 FMI 1 - Engine Overspeed: Data Valid But Below Normal Operational Range heavy-equipment Critical View →
CID-181-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 181 FMI 1 - Auxiliary Hydraulic Pressure: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
411-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 411 FMI 17 - Radiator Coolant Level (Low) Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
411-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 411 FMI 8 - Radiator Coolant Level (Low) Abnormal Frequency/Pulse Width heavy-equipment Major View →
27-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 27 FMI 5 - Atmospheric Pressure Sensor Current Below Normal/Open Circuit heavy-equipment Major View →
CID-29-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 29 FMI 5 - Transmission Oil Temperature: Current Below Normal, or Open Circuit heavy-equipment Major View →
CID-107-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 107 FMI 6 - Fan Control Solenoid: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
CID-29-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 29 FMI 4 - Transmission Oil Temperature: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
CID-51-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 51 FMI 4 - Diesel Particulate Filter Regeneration: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
CID-17-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 17 FMI 2 - Fuel Injector #3: Data Erratic, Intermittent, or Incorrect heavy-equipment Major View →
CID-160-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 160 FMI 3 - Joystick Position #2: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
CID-175-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 175 FMI 3 - Hammer Mode Switch: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
481-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 481 FMI 13 - Hydraulic Filter Restriction Switch Out of Calibration heavy-equipment Minor View →
421-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 421 FMI 0 - Transmission Oil Level (Low) Data Valid But Above Normal Range heavy-equipment Major View →
46-2 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 46 FMI 2 - ECM Connector (Rack Sensor) Data Erratic/Intermittent heavy-equipment Minor View →
CID-147-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 147 FMI 4 - GPS Position Latitude: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-185-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 185 FMI 1 - Attachment Flow: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
CID-156-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 156 FMI 4 - Operator Presence: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
CID-119-FMI-13 Caterpillar CAT Electronic Control Module Caterpillar CID 119 FMI 13 - Parking Brake Oil Pressure: Out of Calibration heavy-equipment Major View →
CID-43-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 43 FMI 8 - High Idle Speed: Abnormal Frequency, Pulse Width, or Period heavy-equipment Major View →
78-1 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 78 FMI 1 - Engine Speed-Timing Sensor (Crankshaft) Data Valid But Below Normal Range heavy-equipment Major View →