All John Deere Fault Codes
174 John Deere diesel fault codes. Click any code for causes, diagnostics, severity, and common fixes.
JD-SPN100-FMI1 critical
Engine Oil Pressure - Data Valid but Below Normal Operational Range (Most Severe)
JD-SPN110-FMI0 critical
Engine Coolant Temperature - Data Valid but Above Normal (Most Severe)
JD-SPN168-FMI1 critical
Battery / ECU Power Supply Voltage - Data Valid but Below Normal Operational Range (Most Severe)
JD-SPN190-FMI0 critical
Engine Speed - Data Valid but Above Normal (Overspeed)
JD-SPN2791-FMI0 critical
EGR Valve Position - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN102-FMI16 serious
Intake Manifold Pressure High - Overboost
JD-SPN105-FMI0 serious
Intake Manifold Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN1075-FMI0 serious
Fuel Filter Water-In-Fuel (WIF) Indicator - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN108-FMI2 serious
Barometric Pressure Sensor - Data Erratic, Intermittent, or Incorrect
JD-SPN1127-FMI0 serious
Turbocharger #1 Boost Pressure - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN1127-FMI1 serious
Turbocharger #1 Boost Pressure - Data Valid but Below Normal Operational Range (Most Severe)
JD-SPN1180-FMI0 serious
Turbocharger #1 Turbine Inlet Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN1184-FMI0 serious
Turbocharger #1 Turbine Outlet Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN157-FMI0 serious
Fuel Rail Pressure - Above Normal Range (High)
JD-SPN157-FMI1 serious
Fuel Rail Pressure - Below Normal Range (Low)
JD-SPN174-FMI0 serious
Fuel Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN175-FMI0 serious
Engine Oil Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN182-FMI14 serious
Trip Fuel Rate - Special Instructions
JD-SPN185-FMI14 serious
Average Fuel Economy (mpg or L/hr) - Special Instructions
JD-SPN237-FMI14 serious
Vehicle Identification Number Mismatch - Special Instructions
JD-SPN237-FMI2 serious
Vehicle Identification Number Mismatch - Data Erratic, Intermittent, or Incorrect
JD-SPN245-FMI14 serious
Total Engine Hours - Special Instructions
JD-SPN2630-FMI0 serious
Charge Air Cooler Outlet Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN2791-FMI14 serious
EGR Valve Position - Special Instructions
JD-SPN2791-FMI7 serious
EGR Valve Position - Mechanical System Not Responding Properly
JD-SPN3251-FMI0 serious
DPF Differential Pressure - Above Normal (Soot Load Too High)
JD-SPN3361-FMI5 serious
DEF Dosing Injector - Current Below Normal
JD-SPN3464-FMI14 serious
Throttle Actuator Command - Special Instructions
JD-SPN3464-FMI7 serious
Throttle Actuator Command - Mechanical System Not Responding Properly
JD-SPN3480-FMI14 serious
Aftertreatment DEF Consumption Rate - Special Instructions
JD-SPN3482-FMI2 serious
Aftertreatment Intake System Status - Data Erratic, Intermittent, or Incorrect
JD-SPN3490-FMI0 serious
Aftertreatment Intake Pressure Differential - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN3609-FMI0 serious
Aftertreatment DPF Intake Pressure - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN3610-FMI0 serious
Aftertreatment DPF Outlet Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN3713-FMI14 serious
Aftertreatment DPF Passive Regeneration Status - Special Instructions
JD-SPN3719-FMI0 serious
Aftertreatment DPF Soot Load Percent - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN3720-FMI0 serious
Aftertreatment DPF Ash Load Percent - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN4334-FMI7 serious
Aftertreatment DEF Doser Injector - Mechanical System Not Responding Properly
JD-SPN4360-FMI0 serious
Aftertreatment SCR Inlet Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN4363-FMI0 serious
Aftertreatment SCR Outlet Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN4364-FMI17 serious
SCR Conversion Efficiency - Below Normal Range
JD-SPN4765-FMI0 serious
Aftertreatment DOC Intake Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN4766-FMI0 serious
Aftertreatment DOC Outlet Temperature - Data Valid but Above Normal Operational Range (Most Severe)
JD-SPN4767-FMI1 serious
Aftertreatment DOC Efficiency Monitor - Data Valid but Below Normal Operational Range (Most Severe)
JD-SPN4767-FMI14 serious
Aftertreatment DOC Efficiency Monitor - Special Instructions
JD-SPN523350-FMI31 serious
PowerTech - Engine Derate Due to Aftertreatment Inducement
JD-SPN5394-FMI7 serious
DEF Dosing Unit - Mechanical System Not Responding (Pump Priming Failure)
JD-SPN609-FMI12 serious
ECU Hours / ECU Identity Fault - Abnormal Condition
JD-SPN609-FMI14 serious
ECU Hours / ECU Identity Fault - Special Instructions
JD-SPN615-FMI14 serious
Engine Air Shutoff Valve Command - Special Instructions
JD-SPN615-FMI7 serious
Engine Air Shutoff Valve Command - Mechanical System Not Responding Properly
JD-SPN631-FMI19 serious
ECU Calibration Memory Fault - Received Network Data in Error
JD-SPN631-FMI2 serious
ECU Calibration Memory Fault - Data Erratic, Intermittent, or Incorrect
JD-SPN639-FMI14 serious
J1939 Network - Lost Communication With ECU (CAN Bus Fault)
JD-SPN651-FMI5 serious
Cylinder #1 Injector - Current Below Normal (Open Circuit)
JD-SPN652-FMI5 serious
Cylinder #2 Injector - Current Below Normal (Open Circuit)
JD-SPN653-FMI5 serious
Cylinder #3 Injector - Current Below Normal (Open Circuit)
JD-SPN654-FMI5 serious
Cylinder #4 Injector - Current Below Normal (Open Circuit)
JD-SPN655-FMI5 serious
Cylinder #5 Injector - Current Below Normal (Open Circuit)
JD-SPN656-FMI5 serious
Cylinder #6 Injector - Current Below Normal (Open Circuit)
JD-SPN729-FMI7 serious
Intake Air Heater Relay #1 - Mechanical System Not Responding Properly
JD-SPN84-FMI14 serious
Wheel-Based Vehicle Speed - Special Instructions
JD-SPN84-FMI2 serious
Wheel-Based Vehicle Speed - Data Erratic, Intermittent, or Incorrect
JD-SPN91-FMI14 serious
Accelerator / Hand Throttle Position - Special Instructions
JD-SPN91-FMI7 serious
Accelerator / Hand Throttle Position - Mechanical System Not Responding Properly
JD-SPN92-FMI1 serious
Percent Load at Current Speed - Data Valid but Below Normal Operational Range (Most Severe)
JD-SPN92-FMI14 serious
Percent Load at Current Speed - Special Instructions
JD-SPN94-FMI1 serious
Fuel Supply (Lift) Pressure - Below Normal (Most Severe)
JD-SPN973-FMI14 serious
Engine Retarder Selection State - Special Instructions
JD-SPN975-FMI7 serious
Engine Fan Speed - Mechanical System Not Responding Properly
JD-SPN976-FMI14 serious
PTO Governor State - Special Instructions
JD-SPN100-FMI4 moderate
Engine Oil Pressure Sensor Circuit - Voltage Below Normal
JD-SPN102-FMI3 moderate
Intake Manifold / Boost Pressure Sensor - Voltage Above Normal
JD-SPN105-FMI16 moderate
Intake Manifold Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN105-FMI3 moderate
Intake Manifold Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN105-FMI4 moderate
Intake Manifold Temperature - Voltage Below Normal or Shorted to Low Source
JD-SPN1075-FMI16 moderate
Fuel Filter Water-In-Fuel (WIF) Indicator - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN1075-FMI31 moderate
Fuel Filter Water-In-Fuel (WIF) Indicator - Condition Exists
JD-SPN108-FMI3 moderate
Barometric Pressure Sensor - Voltage Above Normal or Shorted to High Source
JD-SPN108-FMI4 moderate
Barometric Pressure Sensor - Voltage Below Normal or Shorted to Low Source
JD-SPN1081-FMI31 moderate
Glow Plug / Grid Heater Indicator - Condition Exists
JD-SPN1081-FMI5 moderate
Glow Plug / Grid Heater Indicator - Current Below Normal or Open Circuit
JD-SPN110-FMI3 moderate
Engine Coolant Temperature Sensor - Voltage Above Normal
JD-SPN1127-FMI16 moderate
Turbocharger #1 Boost Pressure - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN1127-FMI3 moderate
Turbocharger #1 Boost Pressure - Voltage Above Normal or Shorted to High Source
JD-SPN1127-FMI4 moderate
Turbocharger #1 Boost Pressure - Voltage Below Normal or Shorted to Low Source
JD-SPN1176-FMI3 moderate
Turbocharger #1 Compressor Inlet Pressure - Voltage Above Normal or Shorted to High Source
JD-SPN1176-FMI4 moderate
Turbocharger #1 Compressor Inlet Pressure - Voltage Below Normal or Shorted to Low Source
JD-SPN1180-FMI16 moderate
Turbocharger #1 Turbine Inlet Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN1180-FMI3 moderate
Turbocharger #1 Turbine Inlet Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN1184-FMI16 moderate
Turbocharger #1 Turbine Outlet Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN1184-FMI3 moderate
Turbocharger #1 Turbine Outlet Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN1349-FMI3 moderate
Injector Metering Rail Power Supply - Voltage Above Normal or Shorted to High Source
JD-SPN1349-FMI4 moderate
Injector Metering Rail Power Supply - Voltage Below Normal or Shorted to Low Source
JD-SPN1349-FMI5 moderate
Injector Metering Rail Power Supply - Current Below Normal or Open Circuit
JD-SPN168-FMI3 moderate
Battery / ECU Power Supply Voltage - Voltage Above Normal or Shorted to High Source
JD-SPN168-FMI4 moderate
Battery / ECU Power Supply Voltage - Voltage Below Normal or Shorted to Low Source
JD-SPN174-FMI16 moderate
Fuel Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN174-FMI3 moderate
Fuel Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN174-FMI4 moderate
Fuel Temperature - Voltage Below Normal or Shorted to Low Source
JD-SPN175-FMI3 moderate
Engine Oil Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN175-FMI4 moderate
Engine Oil Temperature - Voltage Below Normal or Shorted to Low Source
JD-SPN182-FMI10 moderate
Trip Fuel Rate - Abnormal Rate of Change
JD-SPN182-FMI11 moderate
Trip Fuel Rate - Root Cause Not Known
JD-SPN185-FMI31 moderate
Average Fuel Economy (mpg or L/hr) - Condition Exists
JD-SPN237-FMI13 moderate
Vehicle Identification Number Mismatch - Out of Calibration
JD-SPN245-FMI9 moderate
Total Engine Hours - Abnormal Update Rate
JD-SPN2630-FMI16 moderate
Charge Air Cooler Outlet Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN2630-FMI3 moderate
Charge Air Cooler Outlet Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN2630-FMI4 moderate
Charge Air Cooler Outlet Temperature - Voltage Below Normal or Shorted to Low Source
JD-SPN27-FMI3 moderate
EGR Valve Position Sensor - Voltage Above Normal
JD-SPN2791-FMI3 moderate
EGR Valve Position - Voltage Above Normal or Shorted to High Source
JD-SPN2791-FMI4 moderate
EGR Valve Position - Voltage Below Normal or Shorted to Low Source
JD-SPN3216-FMI20 moderate
DOC (Diesel Oxidation Catalyst) Inlet NOx Sensor - Data Drifted High
JD-SPN3226-FMI20 moderate
SCR Outlet NOx Sensor - Data Drifted High
JD-SPN3251-FMI16 moderate
DPF Differential Pressure - Above Normal (Less Severe)
JD-SPN3464-FMI3 moderate
Throttle Actuator Command - Voltage Above Normal or Shorted to High Source
JD-SPN3464-FMI4 moderate
Throttle Actuator Command - Voltage Below Normal or Shorted to Low Source
JD-SPN3480-FMI18 moderate
Aftertreatment DEF Consumption Rate - Data Valid but Below Normal Operational Range (Moderately Severe)
JD-SPN3482-FMI11 moderate
Aftertreatment Intake System Status - Root Cause Not Known
JD-SPN3490-FMI16 moderate
Aftertreatment Intake Pressure Differential - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN3609-FMI16 moderate
Aftertreatment DPF Intake Pressure - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN3609-FMI3 moderate
Aftertreatment DPF Intake Pressure - Voltage Above Normal or Shorted to High Source
JD-SPN3609-FMI4 moderate
Aftertreatment DPF Intake Pressure - Voltage Below Normal or Shorted to Low Source
JD-SPN3610-FMI16 moderate
Aftertreatment DPF Outlet Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN3610-FMI3 moderate
Aftertreatment DPF Outlet Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN3713-FMI31 moderate
Aftertreatment DPF Passive Regeneration Status - Condition Exists
JD-SPN3719-FMI16 moderate
Aftertreatment DPF Soot Load Percent - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN3720-FMI16 moderate
Aftertreatment DPF Ash Load Percent - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN4334-FMI3 moderate
Aftertreatment DEF Doser Injector - Voltage Above Normal or Shorted to High Source
JD-SPN4334-FMI4 moderate
Aftertreatment DEF Doser Injector - Voltage Below Normal or Shorted to Low Source
JD-SPN4334-FMI5 moderate
Aftertreatment DEF Doser Injector - Current Below Normal or Open Circuit
JD-SPN4360-FMI16 moderate
Aftertreatment SCR Inlet Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN4360-FMI3 moderate
Aftertreatment SCR Inlet Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN4360-FMI4 moderate
Aftertreatment SCR Inlet Temperature - Voltage Below Normal or Shorted to Low Source
JD-SPN4363-FMI16 moderate
Aftertreatment SCR Outlet Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN4363-FMI3 moderate
Aftertreatment SCR Outlet Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN4765-FMI16 moderate
Aftertreatment DOC Intake Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN4765-FMI3 moderate
Aftertreatment DOC Intake Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN4765-FMI4 moderate
Aftertreatment DOC Intake Temperature - Voltage Below Normal or Shorted to Low Source
JD-SPN4766-FMI16 moderate
Aftertreatment DOC Outlet Temperature - Data Valid but Above Normal Operational Range (Moderately Severe)
JD-SPN4766-FMI3 moderate
Aftertreatment DOC Outlet Temperature - Voltage Above Normal or Shorted to High Source
JD-SPN4767-FMI10 moderate
Aftertreatment DOC Efficiency Monitor - Abnormal Rate of Change
JD-SPN609-FMI31 moderate
ECU Hours / ECU Identity Fault - Condition Exists
JD-SPN615-FMI5 moderate
Engine Air Shutoff Valve Command - Current Below Normal or Open Circuit
JD-SPN631-FMI13 moderate
ECU Calibration Memory Fault - Out of Calibration
JD-SPN657-FMI5 moderate
Injector Metering Rail #1 Pressure - Current Below Normal or Open Circuit
JD-SPN657-FMI6 moderate
Injector Metering Rail #1 Pressure - Current Above Normal or Grounded Circuit
JD-SPN658-FMI5 moderate
Injector Metering Rail #1 Command - Current Below Normal or Open Circuit
JD-SPN658-FMI6 moderate
Injector Metering Rail #1 Command - Current Above Normal or Grounded Circuit
JD-SPN659-FMI5 moderate
Injector Metering Rail #1 Duty Cycle - Current Below Normal or Open Circuit
JD-SPN660-FMI5 moderate
Injector Metering Rail #2 Pressure - Current Below Normal or Open Circuit
JD-SPN660-FMI6 moderate
Injector Metering Rail #2 Pressure - Current Above Normal or Grounded Circuit
JD-SPN661-FMI5 moderate
Injector Metering Rail #2 Command - Current Below Normal or Open Circuit
JD-SPN662-FMI5 moderate
Injector Metering Rail #2 Duty Cycle - Current Below Normal or Open Circuit
JD-SPN729-FMI5 moderate
Intake Air Heater Relay #1 - Current Below Normal or Open Circuit
JD-SPN729-FMI6 moderate
Intake Air Heater Relay #1 - Current Above Normal or Grounded Circuit
JD-SPN84-FMI3 moderate
Wheel-Based Vehicle Speed - Voltage Above Normal or Shorted to High Source
JD-SPN84-FMI4 moderate
Wheel-Based Vehicle Speed - Voltage Below Normal or Shorted to Low Source
JD-SPN91-FMI3 moderate
Accelerator / Hand Throttle Position - Voltage Above Normal or Shorted to High Source
JD-SPN91-FMI4 moderate
Accelerator / Hand Throttle Position - Voltage Below Normal or Shorted to Low Source
JD-SPN92-FMI10 moderate
Percent Load at Current Speed - Abnormal Rate of Change
JD-SPN97-FMI0 moderate
Water in Fuel - Detected
JD-SPN973-FMI5 moderate
Engine Retarder Selection State - Current Below Normal or Open Circuit
JD-SPN974-FMI3 moderate
Remote Accelerator Pedal Position - Voltage Above Normal or Shorted to High Source
JD-SPN974-FMI4 moderate
Remote Accelerator Pedal Position - Voltage Below Normal or Shorted to Low Source
JD-SPN975-FMI5 moderate
Engine Fan Speed - Current Below Normal or Open Circuit
JD-SPN976-FMI5 moderate
PTO Governor State - Current Below Normal or Open Circuit
JD-SPN1075-FMI15 minor
Fuel Filter Water-In-Fuel (WIF) Indicator - Data Valid but Above Normal Operational Range (Least Severe)
JD-SPN168-FMI17 minor
Battery / ECU Power Supply Voltage - Data Valid but Below Normal Operational Range (Least Severe)
JD-SPN175-FMI15 minor
Engine Oil Temperature - Data Valid but Above Normal Operational Range (Least Severe)
JD-SPN3480-FMI17 minor
Aftertreatment DEF Consumption Rate - Data Valid but Below Normal Operational Range (Least Severe)
JD-SPN3719-FMI15 minor
Aftertreatment DPF Soot Load Percent - Data Valid but Above Normal Operational Range (Least Severe)
JD-SPN3720-FMI15 minor
Aftertreatment DPF Ash Load Percent - Data Valid but Above Normal Operational Range (Least Severe)