Faults and error codes · scissor lift
JLG 1930ES service: faults and error codes
The most common faults of the JLG 1930ES (scissor lift) with the likely cause and the way to diagnose them, and below the JLG error codes with explanations. RK Rental services the JLG 1930ES: repairs, maintenance inspections and preparation for UDT inspections (UDT is the Polish Office of Technical Inspection), parts and service life assessment.
JLG 1930ES: machine data
- Type
- scissor lift
- Working height
- 7.72 m
- Platform capacity
- 230 kg
- Drive
- Electric
- Error codes in the database
- 206
1930ES machine card →1930ES manuals and parts catalogue →JLG parts →
The information below is diagnostic and indicative. Repairs, calibrations and clearing of fault codes are carried out by a qualified service technician, according to the manual for the specific serial number of the machine. A machine with an active fault code must not be used until the cause has been removed.
JLG 1930ES technical data useful for service
Weight and dimensions decide how the machine is transported to a workshop, while the tyres, battery and drive decide which parts are needed. When you report a service job, please also give the serial number from the rating plate.
- Machine weight
- 1,565 kg
- Platform dimensions
- 1.87 × 0.76 m
Most common JLG 1930ES faults
Platform will not raise or lower
- Likely cause
- Discharged battery, an active fault code blocking the function, platform overload or a faulty valve or solenoid valve of the pump.
- Diagnosis / how to fix it
- Check the battery voltage, read the fault code and remove any excess load from the platform.
Machine will not drive
- Likely cause
- Joystick not in neutral at start-up, an active tilt sensor blocking driving at height, or a controller communication error.
- Diagnosis / how to fix it
- Set the joystick to neutral, lower the platform, level the machine and read the fault code.
Tilt alarm
- Likely cause
- Working on uneven ground, or a mis-adjusted or damaged tilt sensor.
- Diagnosis / how to fix it
- Place the machine on level ground; if the alarm does not clear, a service technician calibrates or replaces the sensor.
Platform overload
- Likely cause
- Capacity exceeded or a load sensor out of calibration.
- Diagnosis / how to fix it
- Remove the excess load; if the error remains, the load cell must be calibrated at a service centre.
Weak or short run time on the battery
- Likely cause
- Sulphated or worn cells, a faulty charger, corroded or loose terminals.
- Diagnosis / how to fix it
- Measure the cell voltages, check the charger and terminals and replace the batteries if necessary.
Will not extend to full height (pothole protection)
- Likely cause
- The pothole protection bars have not deployed, or the deployment sensor is damaged.
- Diagnosis / how to fix it
- Inspect the pothole protection mechanism and its sensors.
No control from the upper control box
- Likely cause
- Loss of communication between the platform and the chassis: a chafed cable, corroded connectors or a faulty controller.
- Diagnosis / how to fix it
- Test from the lower control box and check the coiled cable and the connectors.
Soft hydraulics, or the platform slowly descends
- Likely cause
- Worn cylinder seals, air in the system, contaminated oil or a leaking holding valve.
- Diagnosis / how to fix it
- Check the oil level and condition and the tightness of the system; repair at a service centre.
JLG 1930ES error codes: 206 codes explained
JLG uses the JLG Control System. The flash code has the format group/subgroup (e.g. 2/1), and the full DTC is 3 to 5 digits (e.g. 255, 437, 662), read with a JLG analyser. The first digit indicates the system the fault relates to.
Below you see the code and the original manufacturer's message. Open a code for the likely cause, what you can check yourself and when to call service.
- 006LIFT UP PREVENTED - MAX HEIGHT ZONE A
- 227STEER SWITCHES FAULTY
- 256DRIVE PREVENTED - POTHOLE NOT ENGAGED
- 332BRAKE OPEN CIRCUIT
- 441BATTERY VOLTAGE TOO LOW - SYSTEM SHUTDOWN
- 772STALLED TRACTION MOTOR OR POWER WIRING ERROR
- 822LSS CELL #2 ERROR
- 998EEPROM FAILURE - CHECK ALL SETTINGS
- 3313RIGHT BRAKE SHORT TO BATTERY
- 9911FUNCTION LOCKED OUT - LSS MODULE SOFTWARE VERSION IMPROPER
- 9957POWER MODULE FAILURE - INTERNAL ERROR
- 33299LINE CONTACTOR COIL - SHORT TO BATTERY
- 99144POWER MODULE FAILURE - INTERNAL ERROR
- 448VOLTAGE REFERENCE OUT OF RANGE
- 3381HOUR METER- SHORT TO BATTERY
- 6643CANBUS FAILURE - LSS ANGLE SENSOR
- 23198PRESSURE SENSOR 2 OUT OF RANGE HIGH
- 33318DRIVE FORWARD VALVE - SHORT TO BATTERY
Source: JLG Service and Maintenance Manual ES series (section Diagnostic Trouble Codes).
Do you have a fault or an error code on your JLG 1930ES?
Our service team will read the code, diagnose the cause and remove the fault, at our workshop or on site at the customer's premises (construction site, hall, warehouse), with original or OEM-grade replacement parts.
← Back to JLG serviceContact
The fastest way is by phone: service +48 609 609 105 (also WhatsApp), or write to serwis@fajnepodnosniki.pl.
- Phone (service):
- +48 609 609 105
- E-mail:
- serwis@fajnepodnosniki.pl
- WhatsApp:
- +48 609 609 105
- Base and office:
- ul. Brzozowa 12, 86-061 Brzoza near Bydgoszcz, Poland
- Office hours:
- Monday to Friday, 7:30–15:30 (Polish time)
- Response time:
- Messages: a reply within 1–2 hours.