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
37-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 37 FMI 13 - Crankcase Pressure Sensor Out of Calibration heavy-equipment Minor View →
CID-174-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 174 FMI 4 - Auto Grade Switch: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
341-15 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 341 FMI 15 - Brake Fluid Level Sensor Data Valid But Above Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-102-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 102 FMI 3 - Percent Engine Torque: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
CID-86-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 86 FMI 4 - Cylinder Cutout #3: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
CID-149-FMI-13 Caterpillar CAT Electronic Control Module Caterpillar CID 149 FMI 13 - GPS Altitude: Out of Calibration heavy-equipment Minor View →
CID-45-FMI-0 Caterpillar CAT Electronic Control Module Caterpillar CID 45 FMI 0 - Turbocharger Speed: Data Valid But Above Normal Operational Range heavy-equipment Major View →
CID-56-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 56 FMI 5 - DEF Tank Level: Current Below Normal, or Open Circuit heavy-equipment Major View →
241-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 241 FMI 17 - Engine Speed-Timing Sensor (Camshaft) Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-98-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 98 FMI 8 - Trip Idle Fuel Used: Abnormal Frequency, Pulse Width, or Period heavy-equipment Minor View →
38-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 38 FMI 3 - Fuel Temperature Sensor Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-20-FMI-0 Caterpillar CAT Electronic Control Module Caterpillar CID 20 FMI 0 - Fuel Injector #6: Data Valid But Above Normal Operational Range heavy-equipment Major View →
68-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 68 FMI 6 - Turbocharger Compressor Outlet Temperature Current Above Normal/Grounded Circuit heavy-equipment Major View →
CID-114-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 114 FMI 5 - Axle Oil Pressure: Current Below Normal, or Open Circuit heavy-equipment Minor View →
71-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 71 FMI 3 - Fuel Injection Quantity Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-153-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 153 FMI 3 - Radio Signal Strength: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
10-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 10 FMI 16 - Fuel Pressure Sensor Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
35-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 35 FMI 8 - Radiator Coolant Level Sensor Abnormal Frequency/Pulse Width heavy-equipment Major View →
421-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 421 FMI 3 - Transmission Oil Level (Low) Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-134-FMI-13 Caterpillar CAT Electronic Control Module Caterpillar CID 134 FMI 13 - Right Travel Motor Pressure: Out of Calibration heavy-equipment Minor View →
42-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 42 FMI 4 - Engine Oil Temperature Sensor Voltage Below Normal/Shorted Low heavy-equipment Major View →
68-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 68 FMI 3 - Turbocharger Compressor Outlet Temperature Voltage Above Normal/Shorted High heavy-equipment Major View →
41-1 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 41 FMI 1 - Air Inlet Heater Relay Data Valid But Below Normal Range heavy-equipment Major View →
11-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 11 FMI 6 - Throttle Position Sensor Current Above Normal/Grounded Circuit heavy-equipment Major View →
CID-21-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 21 FMI 1 - ECM Power Supply: Data Valid But Below Normal Operational Range heavy-equipment Critical View →
314-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 314 FMI 5 - Hydraulic Oil Filter Bypass Switch Current Below Normal/Open Circuit heavy-equipment Major View →
CID-21-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 21 FMI 4 - ECM Power Supply: Voltage Below Normal, or Shorted to Low Source heavy-equipment Critical View →
20-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 20 FMI 3 - Injection Actuation Pressure Control Valve Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-36-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 36 FMI 4 - Air Conditioning Pressure: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-86-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 86 FMI 3 - Cylinder Cutout #3: Voltage Above Normal, or Shorted to High Source heavy-equipment Major View →
CID-167-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 167 FMI 5 - Travel Mode Switch: Current Below Normal, or Open Circuit heavy-equipment Minor View →
37-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 37 FMI 8 - Crankcase Pressure Sensor Abnormal Frequency/Pulse Width heavy-equipment Major View →
46-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 46 FMI 13 - ECM Connector (Rack Sensor) Out of Calibration heavy-equipment Minor View →
110-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 110 FMI 17 - Radiator Coolant Temperature Sensor Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-83-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 83 FMI 5 - Fuel Injection Timing Offset: Current Below Normal, or Open Circuit heavy-equipment Major View →
CID-138-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 138 FMI 8 - Swing Position Sensor: Abnormal Frequency, Pulse Width, or Period heavy-equipment Minor View →
82-1 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 82 FMI 1 - Throttle Position Sensor (PWM) Data Valid But Below Normal Range heavy-equipment Major View →
255-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 255 FMI 0 - Fuel Injector (Cylinder 5) Data Valid But Above Normal Range heavy-equipment Major View →
26-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 26 FMI 5 - Inlet Manifold Pressure Sensor Current Below Normal/Open Circuit heavy-equipment Major View →
CID-2-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 2 FMI 5 - Engine Coolant Temperature: Current Below Normal, or Open Circuit heavy-equipment Major View →
CID-145-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 145 FMI 2 - Machine Pitch Angle: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
CID-88-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 88 FMI 6 - Cylinder Cutout #5: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
CID-1-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 1 FMI 5 - Engine Oil Pressure: Current Below Normal, or Open Circuit heavy-equipment Major View →
CID-166-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 166 FMI 1 - Work Mode Switch: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
CID-74-FMI-13 Caterpillar CAT Electronic Control Module Caterpillar CID 74 FMI 13 - Desired Throttle Position: Out of Calibration heavy-equipment Major View →
35-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 35 FMI 5 - Radiator Coolant Level Sensor Current Below Normal/Open Circuit heavy-equipment Major View →
CID-183-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 183 FMI 8 - Attachment Identification: Abnormal Frequency, Pulse Width, or Period heavy-equipment Minor View →
425-2 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 425 FMI 2 - Hydraulic Oil Level (Low) Data Erratic/Intermittent heavy-equipment Minor View →
42-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 42 FMI 17 - Engine Oil Temperature Sensor Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-17-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 17 FMI 6 - Fuel Injector #3: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
CID-190-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 190 FMI 3 - Work Tool Speed: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
CID-126-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 126 FMI 3 - Boom Cylinder Head Pressure: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
CID-128-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 128 FMI 6 - Stick Cylinder Head Pressure: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
168-2 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 168 FMI 2 - Engine ECM Data Erratic/Intermittent heavy-equipment Minor View →
451-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 451 FMI 18 - Air Filter Restriction (High) Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
254-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 254 FMI 13 - Fuel Injector (Cylinder 4) Out of Calibration heavy-equipment Minor View →
CID-7-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 7 FMI 5 - Intake Manifold Air Temperature: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-182-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 182 FMI 6 - Auxiliary Hydraulic Flow: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
CID-163-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 163 FMI 4 - Pedal Position #1: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
381-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 381 FMI 3 - Engine Air Filter Restriction Switch Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-199-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 199 FMI 4 - Work Tool Diagnostic: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-172-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 172 FMI 2 - Low Speed Travel Switch: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
461-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 461 FMI 16 - Fuel Water Separator Sensor Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
31-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 31 FMI 17 - Engine Speed-Timing Sensor (Secondary) Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-72-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 72 FMI 5 - PTO Speed: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-149-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 149 FMI 5 - GPS Altitude: Current Below Normal, or Open Circuit heavy-equipment Minor View →
190-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 190 FMI 17 - Engine Speed (RPM) Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-174-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 174 FMI 5 - Auto Grade Switch: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-170-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 170 FMI 3 - Cruise Control Switch: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
16-15 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 16 FMI 15 - Engine Oil Pressure Sensor Data Valid But Above Normal Operating Range (Least Severe) heavy-equipment Info View →
391-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 391 FMI 5 - Hydraulic Oil Temperature Sensor Current Below Normal/Open Circuit heavy-equipment Major View →
CID-79-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 79 FMI 6 - Engine Speed Sensor: Current Above Normal, or Grounded Circuit heavy-equipment Critical View →
255-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 255 FMI 16 - Fuel Injector (Cylinder 5) Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-172-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 172 FMI 5 - Low Speed Travel Switch: Current Below Normal, or Open Circuit heavy-equipment Minor View →
5-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 5 FMI 8 - Inlet Manifold Air Temperature Sensor Abnormal Frequency/Pulse Width heavy-equipment Major View →
CID-109-FMI-13 Caterpillar CAT Electronic Control Module Caterpillar CID 109 FMI 13 - Fuel Filter Differential Pressure: Out of Calibration heavy-equipment Minor View →
CID-41-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 41 FMI 4 - Engine Overspeed: Voltage Below Normal, or Shorted to Low Source heavy-equipment Critical View →