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
44-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 44 FMI 3 - Engine Warning Indicator Voltage Above Normal/Shorted High heavy-equipment Major View →
391-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 391 FMI 3 - Hydraulic Oil Temperature Sensor Voltage Above Normal/Shorted High heavy-equipment Major View →
26-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 26 FMI 6 - Inlet Manifold Pressure Sensor Current Above Normal/Grounded Circuit heavy-equipment Major View →
CID-84-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 84 FMI 6 - Cylinder Cutout #1: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
111-2 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 111 FMI 2 - Battery Voltage Data Erratic/Intermittent heavy-equipment Minor View →
CID-83-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 83 FMI 6 - Fuel Injection Timing Offset: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
CID-6-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 6 FMI 2 - Engine Oil Temperature: Data Erratic, Intermittent, or Incorrect heavy-equipment Major View →
421-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 421 FMI 8 - Transmission Oil Level (Low) Abnormal Frequency/Pulse Width heavy-equipment Major View →
190-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 190 FMI 0 - Engine Speed (RPM) Data Valid But Above Normal Range heavy-equipment Major View →
CID-160-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 160 FMI 4 - Joystick Position #2: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-101-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 101 FMI 1 - Percent Engine Load: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
CID-192-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 192 FMI 3 - Work Tool Angle: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
110-2 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 110 FMI 2 - Radiator Coolant Temperature Sensor Data Erratic/Intermittent heavy-equipment Minor View →
CID-55-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 55 FMI 2 - DEF Tank Temperature: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
CID-51-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 51 FMI 3 - Diesel Particulate Filter Regeneration: Voltage Above Normal, or Shorted to High Source heavy-equipment Major View →
CID-79-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 79 FMI 8 - Engine Speed Sensor: Abnormal Frequency, Pulse Width, or Period heavy-equipment Critical View →
68-15 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 68 FMI 15 - Turbocharger Compressor Outlet Temperature Data Valid But Above Normal Operating Range (Least Severe) heavy-equipment Info View →
291-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 291 FMI 3 - Transmission Temperature Sensor Voltage Above Normal/Shorted High heavy-equipment Major View →
31-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 31 FMI 16 - Engine Speed-Timing Sensor (Secondary) Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-96-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 96 FMI 5 - Trip Fuel Used: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-138-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 138 FMI 3 - Swing Position Sensor: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
CID-21-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 21 FMI 5 - ECM Power Supply: Current Below Normal, or Open Circuit heavy-equipment Critical View →
CID-3-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 3 FMI 4 - Engine Speed/Timing: Voltage Below Normal, or Shorted to Low Source heavy-equipment Critical View →
11-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 11 FMI 8 - Throttle Position Sensor Abnormal Frequency/Pulse Width heavy-equipment Major View →
CID-49-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 49 FMI 6 - Exhaust Gas Temperature Bank 2: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
CID-114-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 114 FMI 4 - Axle Oil Pressure: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-42-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 42 FMI 4 - Low Idle Speed: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
CID-72-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 72 FMI 6 - PTO Speed: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
71-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 71 FMI 6 - Fuel Injection Quantity Current Above Normal/Grounded Circuit heavy-equipment Major View →
CID-46-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 46 FMI 5 - Turbocharger Compressor Inlet Temperature: Current Below Normal, or Open Circuit heavy-equipment Major View →
461-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 461 FMI 0 - Fuel Water Separator Sensor Data Valid But Above Normal Range heavy-equipment Major View →
CID-21-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 21 FMI 3 - ECM Power Supply: Voltage Above Normal, or Shorted to High Source heavy-equipment Critical View →
CID-36-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 36 FMI 1 - Air Conditioning Pressure: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
4-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 4 FMI 8 - Engine Coolant Temperature Sensor Abnormal Frequency/Pulse Width heavy-equipment Major View →
CID-176-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 176 FMI 1 - Shear Mode Switch: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
CID-129-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 129 FMI 8 - Stick Cylinder Rod Pressure: Abnormal Frequency, Pulse Width, or Period heavy-equipment Minor View →
CID-59-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 59 FMI 6 - DEF Injector: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
253-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 253 FMI 0 - Fuel Injector (Cylinder 3) Data Valid But Above Normal Range heavy-equipment Major View →
CID-76-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 76 FMI 1 - Fuel Injection Timing: Data Valid But Below Normal Operational Range heavy-equipment Major View →
31-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 31 FMI 3 - Engine Speed-Timing Sensor (Secondary) Voltage Above Normal/Shorted High heavy-equipment Major View →
321-2 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 321 FMI 2 - Brake Oil Pressure (Low) Data Erratic/Intermittent heavy-equipment Minor View →
44-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 44 FMI 0 - Engine Warning Indicator Data Valid But Above Normal Range heavy-equipment Major View →
CID-3-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 3 FMI 6 - Engine Speed/Timing: Current Above Normal, or Grounded Circuit heavy-equipment Critical View →
CID-140-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 140 FMI 3 - Right Track Position Sensor: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
110-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 110 FMI 13 - Radiator Coolant Temperature Sensor Out of Calibration heavy-equipment Minor View →
227-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 227 FMI 6 - Injection Actuation Pressure (Low) Current Above Normal/Grounded Circuit heavy-equipment Major View →
51-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 51 FMI 17 - Engine Speed-Timing Sensor (Rack Position) Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
341-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 341 FMI 0 - Brake Fluid Level Sensor Data Valid But Above Normal Range heavy-equipment Major View →
CID-163-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 163 FMI 3 - Pedal Position #1: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
CID-141-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 141 FMI 1 - Boom Angle: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
431-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 431 FMI 16 - Brake Fluid Level (Low) Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-93-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 93 FMI 6 - Trip Tattletale: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
CID-12-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 12 FMI 2 - Boost Pressure: Data Erratic, Intermittent, or Incorrect heavy-equipment Major View →
451-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 451 FMI 6 - Air Filter Restriction (High) Current Above Normal/Grounded Circuit heavy-equipment Major View →
CID-52-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 52 FMI 4 - Selective Catalytic Reduction (SCR) NOx Sensor: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
321-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 321 FMI 17 - Brake Oil Pressure (Low) Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-58-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 58 FMI 4 - DEF Pump: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
271-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 271 FMI 3 - Transmission Oil Pressure Sensor Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-46-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 46 FMI 4 - Turbocharger Compressor Inlet Temperature: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
CID-103-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 103 FMI 5 - Engine Reference Torque: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-93-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 93 FMI 8 - Trip Tattletale: Abnormal Frequency, Pulse Width, or Period heavy-equipment Minor View →
44-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 44 FMI 13 - Engine Warning Indicator Out of Calibration heavy-equipment Minor View →
CID-188-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 188 FMI 6 - Work Tool Pump Pressure: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
CID-187-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 187 FMI 3 - Attachment Direction: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
256-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 256 FMI 3 - Fuel Injector (Cylinder 6) Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-149-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 149 FMI 4 - GPS Altitude: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-100-FMI-0 Caterpillar CAT Electronic Control Module Caterpillar CID 100 FMI 0 - Average Fuel Rate: Data Valid But Above Normal Operational Range heavy-equipment Minor View →
200-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 200 FMI 18 - Engine Oil Pressure (Low) Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-183-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 183 FMI 6 - Attachment Identification: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
CID-80-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 80 FMI 1 - Camshaft Position Sensor: Data Valid But Below Normal Operational Range heavy-equipment Critical View →
481-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 481 FMI 18 - Hydraulic Filter Restriction Switch Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-80-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 80 FMI 3 - Camshaft Position Sensor: Voltage Above Normal, or Shorted to High Source heavy-equipment Critical View →
20-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 20 FMI 4 - Injection Actuation Pressure Control Valve Voltage Below Normal/Shorted Low heavy-equipment Major View →
CID-142-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 142 FMI 2 - Stick Angle: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
200-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 200 FMI 13 - Engine Oil Pressure (Low) Out of Calibration heavy-equipment Minor View →
4-1 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 4 FMI 1 - Engine Coolant Temperature Sensor Data Valid But Below Normal Range heavy-equipment Major View →
CID-87-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 87 FMI 6 - Cylinder Cutout #4: Current Above Normal, or Grounded Circuit heavy-equipment Major View →