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JLG Telehandler Fault Codes List: 33237 to 423

Page 6 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 33237 to 423

  • 33237UGM Output Drivers - Frame Level Right Valve - Open Circuit
  • 33238UGM Output Drivers - Frame Level Right Valve - Short to Battery
  • 33239UGM Output Drivers - Frame Level Right Valve - Short to Ground
  • 33241UGM Output Drivers - Transmission C Coil - Short to Battery
  • 33242UGM Output Drivers - Transmission C Coil - Short to Ground
  • 33244UGM Output Drivers - Transmission B Coil - Short to Battery
  • 33245UGM Output Drivers - Transmission B Coil - Short to Ground
  • 33247UGM Output Drivers - Transmission Reverse Coil - Short to Battery
  • 33248UGM Output Drivers - Transmission Reverse Coil - Short to Ground
  • 33250UGM Output Drivers - Transmission A Coil - Short to Battery
  • 33251UGM Output Drivers - Transmission A Coil - Short to Ground
  • 33253UGM Output Drivers - Transmission Forward Coil - Short to Battery
  • 33254UGM Output Drivers - Transmission Forward Coil - Short to Ground
  • 33256UGM Output Drivers - Transmission E Coil - Short to Battery
  • 33257UGM Output Drivers - Transmission E Coil - Short to Ground
  • 33259UGM Output Drivers - Transmission 1 Coil - Short to Ground
  • 33260UGM Output Drivers - Transmission 1 Coil - Short to Battery
  • 33262UGM Output Drivers - Transmission D Coil - Short to Battery
  • 33263UGM Output Drivers - Transmission D Coil - Short to Ground
  • 33265UGM Output Drivers - Transmission 2 Coil - Short to Battery
  • 33266UGM Output Drivers - Transmission 2 Coil - Short to Ground
  • 33267UGM Output Drivers - Engine Fuel Relay - Open Circuit
  • 33268UGM Output Drivers - Engine Fuel Relay - Short to Battery
  • 33269UGM Output Drivers - Engine Fuel Relay - Short to Ground
  • 33270UGM Output Drivers - Crab Steer Valve - Open Circuit
  • 33271UGM Output Drivers - Crab Steer Valve - Short to Battery
  • 33272UGM Output Drivers - Crab Steer Valve - Short to Ground
  • 33273UGM Output Drivers - All Wheel Steer Valve - Open Circuit
  • 33274UGM Output Drivers - All Wheel Steer Valve - Short to Battery
  • 33275UGM Output Drivers - All Wheel Steer Valve - Short to Ground
  • 33276UGM Output Drivers - APU Pump Relay - Open Circuit
  • 33277UGM Output Drivers - APU Pump Relay - Short to Battery
  • 33278UGM Output Drivers - APU Pump Relay - Short to Ground
  • 33279UGM Output Drivers - Glow Plugs- Open Circuit
  • 33280UGM Output Drivers - Glow Plugs - Short to Battery
  • 33281UGM Output Drivers - Glow Plugs - Short to Ground
  • 33282UGM Output Drivers - Engage Starter Output - Open Circuit
  • 33283UGM Output Drivers - Engage Starter Output - Short to Battery
  • 33284UGM Output Drivers - Engage Starter Output - Short to Ground
  • 33285UGM Output Drivers - Alternator Excitation Line - Short to Battery
  • 33286UGM Output Drivers - Front Motor - Current Feedback Reading Too Low
  • 33287UGM Output Drivers - Lift - Current Feedback Reading Too Low
  • 33288UGM Output Drivers - Telescope - Current Feedback Reading Too Low
  • 33289UGM Output Drivers - Stabilizers/Frame Level - Current Feedback Reading Too Low
  • 33290UGM Output Drivers - Fork Tilt - Current Feedback Reading Too Low
  • 33291UGM Output Drivers - Auxiliary Hydraulics - Current Feedback Reading Too Low
  • 33292UGM Output Drivers - Front Motor Swivel Angle - Open Circuit
  • 33293UGM Output Drivers - Front Motor Swivel Angle - Short to Battery
  • 33294UGM Output Drivers - Front Motor Swivel Angle - Short to Ground
  • 33326UGM Output Drivers - Rear Auxiliary Hydraulics Valve - Open Circuit
  • 33327UGM Output Drivers - Rear Auxiliary Hydraulics Valve - Short to Battery
  • 33328UGM Output Drivers - Rear Auxiliary Hydraulics Valve - Short to Ground
  • 33338UGM Output Drivers - Boom Ride Valve - Short to Ground
  • 33341UGM Output Drivers - Boom Float Valve - Short to Ground
  • 33344UGM Output Drivers - Boom Tank Valve - Short to Ground
  • 33369UGM Output Drivers - Boom Ride Valve - Short to Battery or Open Circuit
  • 33407Lift Down Valve Short to Ground
  • 33438Function Enable Output - Short to Battery
  • 33439Telescope Enable Valve - Open Circuit
  • 33440Telescope Enable Valve - Short to Battery
  • 33441Passive Mode Indicator - Short to Ground
  • 33442Passive Mode Indicator - Short to Battery
  • 33443Function Enable Output - Short to Ground
  • 33444Telescope Enable Valve - Short to Ground
  • 335Lift Down Valve - Short to Battery
  • 336Lift Down Valve Open Circuit
  • 34Controller Mode Switch; Short Circuit to Battery
  • 35Controller Mode Switch; Short Circuit to Ground
  • 36UB1; Short Circuit to Battery Error of Actuator Relay 1
  • 360Power Stage Diagnosis Disabled; High Battery Voltage
  • 361Power Stage Diagnosis Disabled; Low Battery Voltage
  • 37UB2; Short Circuit to Battery Error of Actuator Relay 2
  • 376Access Error EEPROM Memory (Delete)
  • 377Access Error EEPROM Memory (Read)
  • 378Access Error EEPROM Memory (Write)
  • 38UB3; Short Circuit to Battery Error of Actuator Relay 3
  • 381Physical Range Check Low for EGR Differential Pressure
  • 383Actuator EGR Valve; Open Load
  • 384Actuator EGR Valve; Power Stage Over Temperature
  • 385Actuator EGR Valve; Short Circuit to Battery
  • 386Actuator EGR Valve; Short Circuit to Ground
  • 387Internal Software Error ECU; Injection Cut Off
  • 388Overspeed Detection in Component Engine Protection
  • 389Engine Speed Above Warning Threshold (FOC-Level 1)
  • 39UB4; Short Circuit to Battery Error of Actuator Relay 4
  • 390Engine Speed Above Warning Threshold (FOC-Level 2)
  • 391Engine Speed Above Warning Threshold (Overrun Mode)
  • 4Air Flow Sensor Load Correction Factor Exceeding the Maximum Drift Limit
  • 40UB5; Short Circuit to Battery Error of Actuator Relay 5
  • 4-1Tele Out Open Fault
  • 412Sensor Error Ambient Air Pressure; Signal Range Check High
  • 413Sensor Error Ambient Air Pressure; Signal Range Check Low
  • 417Sensor Error Environment Temperature; Signal Range Check High
  • 418Sensor Error Environment Temperature; Signal Range Check Low
  • 419Sensor Camshaft Speed; Disturbed Signal
  • 4-2Tele In Open Fault
  • 420Sensor Camshaft Speed; No Signal
  • 421Offset Angle Between Crank and Camshaft Sensor is Too Large
  • 422Sensor Crankshaft Speed; Disturbed Signal
  • 423Sensor Crankshaft Speed; No Signal
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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