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JLG Telehandler Fault Codes List: 424 to 584

Page 7 of 10 of the full JLG Telehandler fault code list (1,016 codes). Each entry is the code as the machine reports it and what the manufacturer data says it means.

JLG Telehandler codes 424 to 584

  • 424Engine Running Lamp; Open Load
  • 425Engine Running Lamp; Power Stage Over Temperature
  • 426Engine Running Lamp; Short Circuit to Battery
  • 427Engine Running Lamp; Short Circuit to Ground
  • 4-3Tilt Up Open Fault
  • 4314Engine - Wrong Engine Selected - ECM Detected
  • 4318Engine - Low Engine Oil Pressure Warning
  • 4319Engine - Low Engine Oil Pressure Critical
  • 4320Engine - Alternator Charging Failure
  • 4321Engine - Air Filter Restriction
  • 4322Engine - Loss of Engine Speed Signal
  • 4324Engine - Conflicting Operating Engine State
  • 4-4Tilt Down Open Fault
  • 442Battery Supply - Battery Voltage Too High - System Shutdown
  • 443Battery Supply - LSS Battery Voltage Too High
  • 444Battery Supply - LSS Battery Voltage Too Low
  • 445Battery Supply - Battery Voltage Low
  • 447Battery Supply - Reference Voltage Out of Range - Ground
  • 45Sensor Error Battery Voltage; Signal Range Check High
  • 450Digital Fan Control; Open Load
  • 451Digital Fan Control; Power Stage Over Temperature
  • 452Digital Fan Control; Short Circuit to Battery
  • 453Digital Fan Control; Short Circuit to Ground
  • 455Fan Actuator (PWM Output); Open Load
  • 456Fan Actuator (PWM Output); Power Stage Over Temperature
  • 457Fan Actuator (PWM Output); Short Circuit to Battery
  • 4578Lift Valve - Pressure Sensor Voltage Out of Range
  • 458Fan Actuator (PWM Output); Short Circuit to Ground
  • 46Sensor Error Battery Voltage; Signal Range Check Low
  • 460Sensor Error Fan Speed; Signal Range Check High
  • 461Transmission & Drive System - High Transmission Oil Temperature Critical
  • 463Transmission & Drive System - Drive Direction Signal Lost
  • 464Transmission & Drive System - Conflicting Gear Selection Signals
  • 465Transmission & Drive System - Gear Selection Signal Lost
  • 466Transmission & Drive System - Invalid Transmission Configuration
  • 467Transmission & Drive System - Transmission Trouble Code: (SPN): (FMI)
  • 468Transmission & Drive System - Vehicle Speed Sensor - Not Responding
  • 47High Battery Voltage; Warning Threshold Exceeded
  • 472Sensor Error Low Fuel Pressure; Signal Range Check High
  • 473Sensor Error Low Fuel Pressure; Signal Range Check Low
  • 474Low Fuel Pressure; Warning Threshold Exceeded
  • 475Low Fuel Pressure; Shut Off Threshold Exceeded
  • 48Low Battery Voltage; Warning Threshold Exceeded
  • 481High Low Fuel Temperature; Warning Threshold Exceeded
  • 482High Low Fuel Temperature; Shut Off Threshold Exceeded
  • 488Physical Range Check High for Exhaust Gas Temperature Up Stream (SCR-CAT)
  • 49Break Lever Main Switch and Break Lever Redundancy Switch Status Not Plausible
  • 500HCI Dosing Valve (DV1); Over Current at the End of the Injection Phase
  • 501HCI Dosing Valve (DV1); Power Stage Over Temperature
  • 502HCI Dosing Valve (DV1); Short Circuit to Battery
  • 503HCI Dosing Valve (DV1); Short Circuit to Battery High Side
  • 504HCI Dosing Valve (DV1); Short Circuit to Ground
  • 505HCI Dosing Valve (DV1); Short Circuit High Side Power Stage
  • 506Sensor HCI Dosing Valve (DV1) Downstream Pressure; Plausibility Error
  • 508Physical Range Check High for HCI Dosing Valve (DV1) Downstream Pressure; Shut Off Regeneration
  • 5-1Tele Out Short Fault
  • 511Physical Range Check Low for HCI Dosing Valve (DV1) Downstream Pressure; Shut Off Regeneration
  • 514Sensor Error HCI Dosing Valve (DV1) Downstream Pressure; Signal Range Check High
  • 515Sensor Error HCI Dosing Valve (DV1) Downstream Pressure; Signal Range Check Low
  • 516Sensor DV1 & DV2 Upstream Pressure; Plausibility Error
  • 518Physical Range Check High for DV1 & DV2 Upstream Pressure; Shut Off Regeneration
  • 5-2Tele In Short Fault
  • 521Physical Range Check Low for DV1 & DV2 Upstream Pressure; Shut Off Regeneration
  • 524Sensor Error DV1 & DV2 Upstream Pressure; Signal Range Check High
  • 525Sensor Error DV1 & DV2 Upstream Pressure; Signal Range Check Low
  • 526Sensor DV1 & DV2 Upstream Temperature; Plausibility Error
  • 528Physical Range Check High for DV1 & DV2 Upstream Temperature; Shut Off Regeneration
  • 5-3Tilt Up Short Fault
  • 531Physical Range Check Low for DV1 & DV2 Upstream Temperature; Shut Off Regeneration
  • 534Sensor Error DV1 & DV2 Upstream Temperature; Signal Range Check High
  • 535Sensor Error DV1 & DV2 Upstream Temperature; Signal Range Check Low
  • 5-4Tilt Down Short Fault
  • 543Cold Start Aid Relay Error
  • 544Cold Start Aid Relay Open Load
  • 545Cold Start Aid Relay Open Load
  • 547Cold Start Aid Relay; Over Temperature Error
  • 55Air Pump Doesn't Achieve Air Mass Flow Set Point
  • 559Check of Missing Injector Adjustment Value Programming (IMA) Injector 1 (In Firing Order)
  • 56Burner Flame Unintentional Deleted
  • 560Check of Missing Injector Adjustment Value Programming (IMA) Injector 2 (In Firing Order)
  • 561Check of Missing Injector Adjustment Value Programming (IMA) Injector 3 (In Firing Order)
  • 562Check of Missing Injector Adjustment Value Programming (IMA) Injector 4 (In Firing Order)
  • 563Check of Missing Injector Adjustment Value Programming (IMA) Injector 5 (In Firing Order)
  • 564Check of Missing Injector Adjustment Value Programming (IMA) Injector 6 (In Firing Order)
  • 565Injector Cylinder - Bank 1; Short Circuit
  • 566Injector Cylinder - Bank 2; Short Circuit
  • 567Injector Power Stage Output Defect
  • 568Injector 1 (In Firing Order); Interruption of Electric Connection
  • 569Injector 2 (In Firing Order); Interruption of Electric Connection
  • 57Engine Power; Not Enough Oxygen for Regeneration
  • 570Injector 3 (In Firing Order); Interruption of Electric Connection
  • 571Injector 4 (In Firing Order); Interruption of Electric Connection
  • 572Injector 5 (In Firing Order); Interruption of Electric Connection
  • 573Injector 6 (In Firing Order); Interruption of Electric Connection
  • 58Burner Dosing Valve (DV2); Over Current at the End of the Injection Phase
  • 580Injector 1 (In Firing Order); Short Circuit
  • 581Injector 2 (In Firing Order); Short Circuit
  • 582Injector 3 (In Firing Order); Short Circuit
  • 583Injector 4 (In Firing Order); Short Circuit
  • 584Injector 5 (In Firing Order); Short Circuit
Looking for a different JLG Telehandler code?Search the full fault-code database, or hand the code to the AI assistant for a plain-English explanation.

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