HeavyEquipmentFix
Ask

Case IH Fault Codes List: 3723 to 3899

Page 17 of 30 of the full Case IH fault code list (2,992 codes). Each entry is the code as the machine reports it and what the manufacturer data says it means.

Case IH codes 3723 to 3899

  • 3723Lambda Sensor Estimated Temperature Lower Than Threshold
  • 3724Lambda Sensor Cell Circuits Short Circuit to Battery
  • 3725Lambda Sensor Cell Circuits Short Circuit to Ground
  • 3727Info: Low Oil Viscosity
  • 3728Info: Too Low Oil Viscosity
  • 3729Too Frequent Regenerations
  • 372CDownstream SCR Temperature Sensor Comparison To a Calculated Temperature Value Failure
  • 3735Fuel Metering Unit: Over Temperature Of Device Driver Of Metering Unit
  • 3736Lambda Sensor: O2 Concentration Is Outside The Predefined Window During Heater Coupling Detection
  • 3737Lambda Sensor: Over Temperature Error Of The LSU Heater Power Stage
  • 3738Analog Digital Convertor (ADC): Diagnostic Fault Check To Report Multiple Errors While Checking The Complete ROM-Memory
  • 3739ECU Internal Failure - Loss of Synchronization to MM From CPU
  • 3740Power Stages, Injector: DFC To Set A Torque Limitation Once An Error Is Detected Before MoCSOP's Error Reaction Is Set
  • 3741Power Stages, Injector: Wrong Set Response Time
  • 3742Power Stages, Injector: Too Many SPI Errors During MoCSOP Execution
  • 3743Power Stages, Injector: Diagnostic Fault Check To Report The Error In Under Voltage Monitoring
  • 3744Power Stages, Injector: Diagnostic Fault Check To Report The Error In Over Voltage Monitoring
  • 3745Power Stages, Injector: Diagnostic Fault Check To Report That WDA Is Not Working Correctly
  • 3746Power Stages, Injector: OS Timeout In The Shut Off Path Test. Failure Setting The Alarm Task Period
  • 3747Power Stages, Injector: Diagnostic Fault Check To Report That The Positive Test Failed
  • 3748Power Stages, Injector: Diagnostic Fault Check To Report The Timeout In The Shut Off Path Test
  • 3749Accelerator Pedal Position Sensor Rationality Failure
  • 374ADEF Pressure Did Not Drop When System Was Evacuated
  • 3750Injection Control: Error In The Plausibility Of The Injection Energizing Time
  • 3751Injection Control: Error In The Plausibility Of The Start Of Energizing Angles
  • 3752Zero Fuel Calibration (ZFC): Error In The Plausibility Of The Energizing Times Of The Zero Fuel Quantity Calibration
  • 3753Level 2 Monitoring: Diagnostic Fault Check To Report The Error Due To Injection Quantity Correction
  • 3754Level 2 Monitoring: Diagnostic Fault Check To Report The Plausibility Error In Rail Pressure Monitoring
  • 3755Level 2 Monitoring: Diagnostic Fault Check To Report The Error Due To Torque Comparison
  • 3756Level 2 Monitoring: Diagnosis Fault Check To Report The Demand For Normal Mode Due To An Error In The Post Injection 2 Quantity
  • 3757Level 2 Monitoring: Diagnosis Fault Check To Report The Error To Demand For An ICO Due To An Error In The Post Injection 2 Shut Off
  • 3758Level 2 Monitoring: Diagnosis Fault Check To Report The Error To Demand For An ICO Due To An Error In The Post Injection 3 Efficiency Factor
  • 3759ECU Internal Failure - Torque Request Due to Fuel Pressure Exceeds Maximum Torque Limit
  • 3760Level 2 Monitoring: Diagnosis Air Path Limitation Due To A Functional Control Unit Monitoring Forced By ECU Monitoring Level 2
  • 3761Level 2 Monitoring: Diagnosis Quantity Path Limitation Due To A Functional Control Unit Monitoring (Level 2)
  • 3762Level 2 Monitoring - Sensor Supply Voltage Too High
  • 3763Level 2 Monitoring: Reported Under Voltage Of Supply
  • 3764Main Relay: Early Opening Defect Of Main Relay
  • 3766Diesel Particulate Filter Pressure Sensor: Fault Check For The Pressure Sensor Plausibility
  • 3767ECU Internal: Diagnostic Fault Check To Report 'WDA Active' Due To Errors In Query Or Response Communication
  • 3768ECU Internal: Diagnostic Fault Check To Report 'ABE Active' Due To Under Voltage Detection
  • 3769ECU Internal: Diagnostic Fault Check To Report 'ABE Active' Due To Overvoltage Detection
  • 3770ECU Internal: Diagnostic Fault Check To Report 'WDA or ABE Active' Due To Unknown Reason
  • 3773Turbocharger: Under Boost Detected In Pressure Charger Regulator
  • 377ADEF Dosing Valve is Blocked
  • 3786Diesel Particulate Filter (DPF): Signal Range Check Flow Resistance Of The Particulate Filter - High
  • 3787Diesel Particulate Filter (DPF): Signal Range Check Flow Resistance Of The Particulate Filter - Very High
  • 3789Regeneration Duration Exceeds Maximum Allowed Duration
  • 3790Diesel Particulate Filter (DPF): Signal Range Check Flow Resistance Of The Particulate Filter - Maximum
  • 3791Diesel Particulate Filter (DPF) - Flow Resistance Too High
  • 3794Intake Air Pressure Sensor: Plausibility Check For Air Pressure At The Upstream Of Intake Valve Sensor
  • 3795Intake Air Pressure Sensor: Plausibility Check For Air Pressure At The Upstream Of Intake Valve Sensor
  • 3796Diesel Particulate Filter Pressure Sensor Hose Line Error
  • 3797Diesel Particulate Filter Pressure Sensor: SRC High For PFlt Differential Pressure Sensor
  • 3798Diesel Particulate Filter Pressure Sensor: SRC Low For PFlt Differential Pressure Sensor
  • 3799Pressure Relief Valve: Pressure Relief Valve Is Forced To Open, Perform Pressure Shock
  • 37B3Crankcase Pressure Has Exceeded Tolerance Limit
  • 37EENH3 Sensor Heater Performance Failure
  • 3800Pressure Relief Valve: Quantity Balance Check If A Successful PRV Opening Is Ensured
  • 3801Turbine Upstream Pressure Sensor: Source High For Turbine Upstream Pressure Sensor
  • 3802Turbine Upstream Pressure Sensor: Source Low For Turbine Upstream Pressure Sensor
  • 3803ECU Internal: Error On R2S2 Module (Low Level Chip Driver For The Power Stage Chips)
  • 3805Maximum Rail Pressure Exceeded
  • 3808High Pressure Pump Fuel Delivery Quantity at Low Idle is Too High
  • 3810Fuel Pressure Sensor: Rail Pressure Raw Value Is Intermittent
  • 3811ECU Sensor Supply Monitor: ECU Internal: Error Sensor Supplies 1
  • 3812Engine Controller Internal Temperature Out of Range (High)
  • 3813Engine Controller Internal Temperature Out of Range (Low)
  • 3814Engine Controller Internal Temperature Out of Range (SPI Error - LM71)
  • 3818Throttle Valve Actuator (TVA) - Open Circuit
  • 3819Throttle Valve Actuator (TVA) - Over-Current At Power Stage
  • 3820Throttle Valve Actuator (TVA) - Over-Temperature At Power Stage
  • 3821Throttle Valve Actuator (TVA) - Short Circuit To Battery At Out1 Of Power Stage
  • 3822Throttle Valve Actuator (TVA) - Short Circuit To Battery At Out2 Of Power Stage
  • 3823Throttle Valve Actuator (TVA) - Short Circuit To Ground At Out1 Of Power Stage
  • 3824Throttle Valve Actuator (TVA) - Short Circuit To Ground At Out2 Of Power Stage
  • 3825Throttle Valve Actuator (TVA) - Short Circuit At Power Stage
  • 3826Throttle Valve Actuator (TVA) - Temperature Dependent Over-Current At Power Stage
  • 3827Throttle Valve Actuator Control Circuit Supply Voltage Too Low
  • 3830Throttle Valve Actuator (TVA) - Position Signal Too High
  • 3831Throttle Valve Actuator (TVA) - Position Signal Too Low
  • 3834Throttle Valve Actuator Position Sensor Voltage is Higher Than Expected
  • 3835Throttle Valve Actuator Position Sensor Voltage is Lower Than Expected
  • 3838Diagnostic Fault Check For SRC Low In Oxidation Catalyst Upstream Temperature
  • 3839Diesel Oxidation Catalyst (DOC) Inlet Temperature Sensor - Signal Too Low
  • 3840Diesel Particulate Filter (DPF) Inlet Temperature Sensor - Signal Too High
  • 3841Diesel Particulate Filter Upstream Temperature Sensor Shorted To Low Source
  • 3842Turbine Upstream Temperature Sensor: Source High For Turbine Upstream Temperature Sensor
  • 3843Turbine Upstream Temperature Sensor: Source Low For Turbine Upstream Temperature Sensor
  • 3844Error in Comparing Energizing Time to Maximum Value For Injector in Cylinder 1
  • 3845Error State On Comparing Energizing Time To Maximum Value Injector 2
  • 3846Error in Comparing Energizing Time to Maximum Value For Injector in Cylinder 3
  • 3847Error in Comparing Energizing Time to Maximum Value For Injector in Cylinder 2
  • 3848Error in Comparing Energizing Time to Minimum Value For Injector in Cylinder 1
  • 3849Error State On Comparing Energizing Time To Minimum Value Injector 2
  • 3850Error in Comparing Energizing Time to Minimum Value For Injector in Cylinder 3
  • 3851Error in Comparing Energizing Time to Minimum Value For Injector in Cylinder 2
  • 3852Lambda (Oxygen) Sensor: The Maximum Allowed Time For Blow Out Is Exceeded
  • 3870CAN Communication Failure Between Vehicle Controller and ECU - BC2ECU1 Message
  • 3899Info: Engine Temperature Exceeded Pre-Warn Level
Looking for a different Case IH code?Search the full fault-code database, or hand the code to the AI assistant for a plain-English explanation.

Other Case machine types

Fault code lists by brand