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
252-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 252 FMI 13 - Fuel Injector (Cylinder 2) Out of Calibration heavy-equipment Minor View →
CID-15-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 15 FMI 1 - Fuel Injector #1: Data Valid But Below Normal Operational Range heavy-equipment Major View →
CID-191-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 191 FMI 1 - Work Tool Direction: Data Valid But Below Normal Operational Range heavy-equipment Minor View →
CID-138-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 138 FMI 6 - Swing Position Sensor: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
3-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 3 FMI 8 - Injection Actuation Pressure Sensor Abnormal Frequency/Pulse Width heavy-equipment Major View →
336-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 336 FMI 6 - Hydraulic Pump Pressure Sensor Current Above Normal/Grounded Circuit heavy-equipment Major View →
CID-69-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 69 FMI 6 - Fuel Level: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
CID-103-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 103 FMI 3 - Engine Reference Torque: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
CID-160-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 160 FMI 2 - Joystick Position #2: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
20-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 20 FMI 13 - Injection Actuation Pressure Control Valve Out of Calibration heavy-equipment Minor View →
78-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 78 FMI 18 - Engine Speed-Timing Sensor (Crankshaft) Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
31-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 31 FMI 4 - Engine Speed-Timing Sensor (Secondary) Voltage Below Normal/Shorted Low heavy-equipment Major View →
281-15 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 281 FMI 15 - Transmission Speed Sensor Data Valid But Above Normal Operating Range (Least Severe) heavy-equipment Info View →
425-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 425 FMI 18 - Hydraulic Oil Level (Low) Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
391-17 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 391 FMI 17 - Hydraulic Oil Temperature Sensor Data Valid But Below Normal Operating Range (Least Severe) heavy-equipment Info View →
38-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 38 FMI 18 - Fuel Temperature Sensor Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
5-2 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 5 FMI 2 - Inlet Manifold Air Temperature Sensor Data Erratic/Intermittent heavy-equipment Minor View →
341-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 341 FMI 3 - Brake Fluid Level Sensor Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-122-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 122 FMI 3 - Fan Pump Pressure: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
44-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 44 FMI 4 - Engine Warning Indicator Voltage Below Normal/Shorted Low heavy-equipment Major View →
271-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 271 FMI 0 - Transmission Oil Pressure Sensor Data Valid But Above Normal Range heavy-equipment Major View →
CID-162-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 162 FMI 6 - Joystick Position #4: Current Above Normal, or Grounded Circuit heavy-equipment Minor View →
CID-116-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 116 FMI 3 - Final Drive Oil Pressure: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
425-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 425 FMI 3 - Hydraulic Oil Level (Low) Voltage Above Normal/Shorted High heavy-equipment Major View →
6-6 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 6 FMI 6 - Engine Speed-Timing Sensor (Duty Cycle) Current Above Normal/Grounded Circuit heavy-equipment Major View →
CID-186-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 186 FMI 3 - Attachment Speed: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
1-13 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 1 FMI 13 - Mechanical Engine Speed Sensor Out of Calibration heavy-equipment Minor View →
253-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 253 FMI 4 - Fuel Injector (Cylinder 3) Voltage Below Normal/Shorted Low heavy-equipment Major View →
3-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 3 FMI 18 - Injection Actuation Pressure Sensor Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-57-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 57 FMI 5 - DEF Quality/Concentration: Current Below Normal, or Open Circuit heavy-equipment Major View →
CID-176-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 176 FMI 4 - Shear Mode Switch: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-64-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 64 FMI 8 - Engine Brake Solenoid #1: Abnormal Frequency, Pulse Width, or Period heavy-equipment Major View →
CID-5-FMI-0 Caterpillar CAT Electronic Control Module Caterpillar CID 5 FMI 0 - Battery Voltage: Data Valid But Above Normal Operational Range heavy-equipment Major View →
CID-46-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 46 FMI 3 - Turbocharger Compressor Inlet Temperature: Voltage Above Normal, or Shorted to High Source heavy-equipment Major View →
42-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 42 FMI 8 - Engine Oil Temperature Sensor Abnormal Frequency/Pulse Width heavy-equipment Major View →
CID-118-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 118 FMI 8 - Service Brake Oil Pressure: Abnormal Frequency, Pulse Width, or Period heavy-equipment Major View →
252-2 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 252 FMI 2 - Fuel Injector (Cylinder 2) Data Erratic/Intermittent heavy-equipment Minor View →
CID-66-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 66 FMI 1 - Engine Brake Solenoid #3: Data Valid But Below Normal Operational Range heavy-equipment Major View →
CID-111-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 111 FMI 2 - Hydraulic Oil Filter Differential Pressure: Data Erratic, Intermittent, or Incorrect heavy-equipment Minor View →
71-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 71 FMI 16 - Fuel Injection Quantity Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
241-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 241 FMI 3 - Engine Speed-Timing Sensor (Camshaft) Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-150-FMI-0 Caterpillar CAT Electronic Control Module Caterpillar CID 150 FMI 0 - GPS Speed: Data Valid But Above Normal Operational Range heavy-equipment Minor View →
421-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 421 FMI 5 - Transmission Oil Level (Low) Current Below Normal/Open Circuit heavy-equipment Major View →
CID-43-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 43 FMI 4 - High Idle Speed: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
CID-30-FMI-2 Caterpillar CAT Electronic Control Module Caterpillar CID 30 FMI 2 - Transmission Oil Pressure: Data Erratic, Intermittent, or Incorrect heavy-equipment Major View →
CID-118-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 118 FMI 4 - Service Brake Oil Pressure: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
391-15 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 391 FMI 15 - Hydraulic Oil Temperature Sensor Data Valid But Above Normal Operating Range (Least Severe) heavy-equipment Info View →
CID-131-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 131 FMI 5 - Bucket Cylinder Rod Pressure: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-86-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 86 FMI 1 - Cylinder Cutout #3: Data Valid But Below Normal Operational Range heavy-equipment Major View →
58-8 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 58 FMI 8 - Analog Temperature Sensor Abnormal Frequency/Pulse Width heavy-equipment Major View →
CID-53-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 53 FMI 5 - SCR Dosing Unit: Current Below Normal, or Open Circuit heavy-equipment Major View →
42-18 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 42 FMI 18 - Engine Oil Temperature Sensor Data Valid But Below Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
71-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 71 FMI 0 - Fuel Injection Quantity Data Valid But Above Normal Range heavy-equipment Major View →
491-1 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 491 FMI 1 - Transmission Filter Bypass Switch Data Valid But Below Normal Range heavy-equipment Major View →
58-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 58 FMI 5 - Analog Temperature Sensor Current Below Normal/Open Circuit heavy-equipment Major View →
41-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 41 FMI 0 - Air Inlet Heater Relay Data Valid But Above Normal Range heavy-equipment Major View →
CID-61-FMI-1 Caterpillar CAT Electronic Control Module Caterpillar CID 61 FMI 1 - EGR Temperature: Data Valid But Below Normal Operational Range heavy-equipment Major View →
CID-55-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 55 FMI 4 - DEF Tank Temperature: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-115-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 115 FMI 4 - Final Drive Oil Temperature: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
CID-55-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 55 FMI 3 - DEF Tank Temperature: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →
CID-150-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 150 FMI 4 - GPS Speed: Voltage Below Normal, or Shorted to Low Source heavy-equipment Minor View →
227-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 227 FMI 5 - Injection Actuation Pressure (Low) Current Below Normal/Open Circuit heavy-equipment Major View →
CID-42-FMI-6 Caterpillar CAT Electronic Control Module Caterpillar CID 42 FMI 6 - Low Idle Speed: Current Above Normal, or Grounded Circuit heavy-equipment Major View →
CID-49-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 49 FMI 8 - Exhaust Gas Temperature Bank 2: Abnormal Frequency, Pulse Width, or Period heavy-equipment Major View →
4-5 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 4 FMI 5 - Engine Coolant Temperature Sensor Current Below Normal/Open Circuit heavy-equipment Major View →
110-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 110 FMI 16 - Radiator Coolant Temperature Sensor Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-119-FMI-8 Caterpillar CAT Electronic Control Module Caterpillar CID 119 FMI 8 - Parking Brake Oil Pressure: Abnormal Frequency, Pulse Width, or Period heavy-equipment Major View →
CID-54-FMI-13 Caterpillar CAT Electronic Control Module Caterpillar CID 54 FMI 13 - SCR Catalyst Temperature: Out of Calibration heavy-equipment Major View →
11-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 11 FMI 16 - Throttle Position Sensor Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
CID-5-FMI-4 Caterpillar CAT Electronic Control Module Caterpillar CID 5 FMI 4 - Battery Voltage: Voltage Below Normal, or Shorted to Low Source heavy-equipment Major View →
42-0 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 42 FMI 0 - Engine Oil Temperature Sensor Data Valid But Above Normal Range heavy-equipment Major View →
CID-121-FMI-5 Caterpillar CAT Electronic Control Module Caterpillar CID 121 FMI 5 - Steering Pump Pressure: Current Below Normal, or Open Circuit heavy-equipment Minor View →
CID-77-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 77 FMI 3 - Injection Actuation Pressure: Voltage Above Normal, or Shorted to High Source heavy-equipment Critical View →
6-4 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 6 FMI 4 - Engine Speed-Timing Sensor (Duty Cycle) Voltage Below Normal/Shorted Low heavy-equipment Major View →
281-16 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 281 FMI 16 - Transmission Speed Sensor Data Valid But Above Normal Operating Range (Moderately Severe) heavy-equipment Minor View →
371-3 Caterpillar Caterpillar Heavy Equipment Caterpillar CID 371 FMI 3 - Fuel Filter Differential Pressure Switch Voltage Above Normal/Shorted High heavy-equipment Major View →
CID-125-FMI-3 Caterpillar CAT Electronic Control Module Caterpillar CID 125 FMI 3 - Main Relief Pressure: Voltage Above Normal, or Shorted to High Source heavy-equipment Minor View →