JLG error codes

JLG ES series scissor lifts (1930ES, 2030ES, 2630ES, 2646ES, 3246ES)

The 3- or 4-digit code is shown on the ground control box display or on the JLG analyser; the first digit is the system group (2 = control, 3 = outputs/valves, 4 = power supply, 6 = communication, 8 = sensors). The same fault is also given as a flash code on the indicator light (e.g. 2/1). Below are 206 codes with the original message from the manufacturer's manual and its description. They apply to these machines: JLG 1930ES, 2030ES, 2630ES, 2646ES, 3246ES, 4045ES and derivatives (ES1932, ES3246). Source: JLG Service and Maintenance Manual, ES series (Diagnostic Trouble Codes section).

Brand

Machine type / control system

Error code

Showing the first 30: type more digits of the code.

The descriptions are quoted from the manufacturer's service documentation and are for guidance only. Clearing codes, calibrations and repairs are carried out by a qualified service technician according to the manual for the specific serial number. A machine with an active blocking code must not be used until the cause has been removed.

All JLG codes: the list

Code	Meaning	Type
001	EVERYTHING OK	message
002	GROUND MODE OK	message
003	ALARM SOUNDING - TILTED & ABOVE ELEVATION	warning / function limited
004	DRIVING AT CUTBACK - ABOVE ELEVATION	warning / function limited
005	DRIVE & LIFT UP PREVENTED - TILTED & ELEVATED	blocking fault
006	LIFT UP PREVENTED - MAX HEIGHT ZONE A	blocking fault
007	DRIVING AT CUTBACK - POTHOLE STILL ENGAGED	warning / function limited
008	FUNCTIONS LOCKED OUT - SYSTEM POWERED DOWN	warning / function limited
009	DRIVE PREVENTED - ELEVATED ABOVE DRIVE CUTOUT HEIGHT	blocking fault
211	POWER CYCLE	message
212	KEYSWITCH FAULTY	blocking fault
221	FUNCTION PROBLEM - HORN PERMANENTLY SELECTED	warning / function limited
222	FUNCTION PROBLEM - INDOOR / OUTDOOR PERMANENTLY SELECTED	warning / function limited
223	FUNCTION PROBLEM - DRIVE & LIFT ACTIVE TOGETHER	blocking fault
224	FUNCTION PROBLEM - STEER LEFT PERMANENTLY SELECTED	warning / function limited
225	FUNCTION PROBLEM - STEER RIGHT PERMANENTLY SELECTED	warning / function limited
226	ACCELERATOR FAULTY - WIPER OUT OF RANGE	blocking fault
227	STEER SWITCHES FAULTY	warning / function limited
228	FUNCTION LOCKED OUT - ACCELERATOR NOT CENTERED	blocking fault
229	FUNCTION PROBLEM - TRIGGER PERMANENTLY CLOSED	warning / function limited
231	FUNCTION PROBLEM - LIFT PERMANENTLY SELECTED	warning / function limited
232	GROUND LIFT UP / DOWN ACTIVE TOGETHER	warning / function limited
233	FUNCTION PROBLEM - BRAKE RELEASE PERMANENTLY SELECTED	warning / function limited
251	ELEV ANGLE SENSOR FAULTY - VOLTAGE OUT OF RANGE	blocking fault
252	ELEV ANGLE SENSOR HAS NOT BEEN CALIBRATED	warning / function limited
253	DRIVE PREVENTED - CHARGER CONNECTED	blocking fault
254	DRIVE & LIFT UP PREVENTED - CHARGER CONNECTED	blocking fault
255	PLATFORM OVERLOADED	blocking fault
256	DRIVE PREVENTED - POTHOLE NOT ENGAGED	blocking fault
257	ELEV PROX PERMANENTLY CLOSED - CHECK PROX AND ANGLE ADJUSTMENT	warning / function limited
258	DRIVE & LIFT PREVENTED - BRAKES ELECTRICALLY RELEASED FOR TOWING	blocking fault
259	MODEL CHANGED - HYDRAULICS SUSPENDED - CYCLE EMS	blocking fault
311	OPEN CIRCUIT LINE CONTACTOR	blocking fault
312	CONTACTOR DRIVER PERMANENTLY OFF	blocking fault
314	AUXILIARY RELAY - OPEN CIRCUIT	blocking fault
321	LINE CONTACTOR MISWIRED ON OR WELDED	blocking fault
322	CONTACTOR DRIVER PERMANENTLY ON	blocking fault
326	AUXILIARY RELAY SHORT TO BATTERY	blocking fault
331	BRAKE SHORT TO BATTERY	blocking fault
332	BRAKE OPEN CIRCUIT	blocking fault
333	LIFT UP SHORT TO BATTERY	blocking fault
334	LIFT UP OPEN CIRCUIT	blocking fault
335	LIFT DN SHORT TO BATTERY	blocking fault
336	LIFT DN OPEN CIRCUIT	blocking fault
337	STEER LEFT SHORT TO BATTERY	blocking fault
338	STEER LEFT OPEN CIRCUIT	blocking fault
339	STEER RIGHT SHORT TO BATTERY	blocking fault
421	POWER MODULE TOO HOT - PLEASE WAIT	warning / function limited
422	DRIVING AT CUTBACK - POWER MODULE CURRENT LIMIT	warning / function limited
423	LIFT UP AT CUTBACK - POWER MODULE CURRENT LIMIT	warning / function limited
441	BATTERY VOLTAGE TOO LOW - SYSTEM SHUTDOWN	blocking fault
442	BATTERY VOLTAGE TOO HIGH - SYSTEM SHUTDOWN	blocking fault
443	LSS BATTERY VOLTAGE TOO HIGH	blocking fault
444	LSS BATTERY VOLTAGE TOO LOW	blocking fault
446	LOGIC SUPPLY VOLTAGE OUT OF RANGE	blocking fault
661	CANBUS FAILURE - POWER MODULE	blocking fault
662	CANBUS FAILURE - PLATFORM MODULE	blocking fault
663	CANBUS FAILURE - LOAD SENSING SYSTEM MODULE	blocking fault
664	CANBUS FAILURE - ACCESSORY MODULE	warning / function limited
671	ACCESSORY FAULT	warning / function limited
771	OPEN CIRCUIT DRIVE MOTOR WIRING	blocking fault
772	STALLED TRACTION MOTOR OR POWER WIRING ERROR	blocking fault
773	CAPACITOR BANK FAULT - CHECK POWER CIRCUITS	blocking fault
774	SHORT CIRCUIT FIELD WIRING	blocking fault
775	OPEN CIRCUIT FIELD WIRING	blocking fault
776	STALLED PUMP MOTOR OR POWER WIRING ERROR	blocking fault
777	OPEN CIRCUIT PUMP MOTOR WIRING	blocking fault
778	TRACTION T HIGH - CHECK POWER CIRCUITS	blocking fault
779	TRACTION T LOW - CHECK POWER CIRCUITS	blocking fault
811	TILT SENSOR NOT CALIBRATED	warning / function limited
812	NO DATA FROM TILT SENSOR - NOT CONNECTED OR FAULTY	blocking fault
821	LSS CELL #1 ERROR	warning / function limited
822	LSS CELL #2 ERROR	warning / function limited
823	LSS CELL #3 ERROR	warning / function limited
824	LSS CELL #4 ERROR	warning / function limited
825	LSS HAS NOT BEEN CALIBRATED	warning / function limited
991	LSS WATCHDOG RESET	warning / function limited
992	LSS EEPROM ERROR	warning / function limited
993	LSS INTERNAL ERROR - PIN EXCITATION	warning / function limited
994	LSS INTERNAL ERROR - DRDY MISSING FROM A/D	warning / function limited
995	POWER MODULE FAILURE - PERSONALITY RANGE ERROR	blocking fault
996	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
997	POWER MODULE FAILURE - CHECK POWER CIRCUITS OR MOSFET SHORT CIRCUIT	blocking fault
998	EEPROM FAILURE - CHECK ALL SETTINGS	blocking fault
999	FUNCTION LOCKED OUT - POWER MODULE SOFTWARE VERSION IMPROPER	blocking fault
2210	TRIGGER CLOSED TOO LONG WHILE IN NEUTRAL	warning / function limited
2211	FOOTSWITCH CLOSED TOO LONG WHILE IN NEUTRAL	warning / function limited
2232	FUNCTION PROBLEM - DRIVE & LIFT BOTH OPEN	blocking fault
2510	DRIVE PREVENTED - BRAKES NOT RELEASING	blocking fault
2511	ELEV ANGLE SENSOR FAULTY - NOT MOUNTED	blocking fault
2512	ELEV ANGLE SENSOR NOT DETECTING CHANGE	blocking fault
3310	STEER RIGHT OPEN CIRCUIT	blocking fault
3311	GROUND ALARM SHORT TO BATTERY	blocking fault
3312	LEFT BRAKE SHORT TO BATTERY	blocking fault
3313	RIGHT BRAKE SHORT TO BATTERY	blocking fault
3314	LEFT BRAKE OPEN CIRCUIT	blocking fault
3315	RIGHT BRAKE OPEN CIRCUIT	blocking fault
4421	LOGIC SUPPLY VOLTAGE OUT OF RANGE	blocking fault
4422	LOGIC SUPPLY VOLTAGE OUT OF RANGE	blocking fault
6635	CANBUS FAILURE - CHASSIS TILT SENSOR	blocking fault
7710	PUMP P HIGH - CHECK POWER CIRCUITS	blocking fault
7711	PUMP P LOW - CHECK POWER CIRCUITS	blocking fault
7741	ARMATURE BRAKING CURRENT TOO HIGH	blocking fault
7742	FIELD VOLTAGE IMPROPER	blocking fault
9910	FUNCTION LOCKED OUT - PLATFORM MODULE SOFTWARE VERSION IMPROPER	blocking fault
9911	FUNCTION LOCKED OUT - LSS MODULE SOFTWARE VERSION IMPROPER	blocking fault
9912	POWER MODULE FAILURE - SYSTEM MONITOR	blocking fault
9917	HIGH RESOLUTION ANALOG TO DIGITAL FAILURE - INTERRUPT LOST	blocking fault
9924	FUNCTIONS LOCKED OUT - MACHINE NOT CONFIGURED	blocking fault
9950	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9951	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9952	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9953	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9954	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9955	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9956	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9957	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9958	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9960	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9962	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9963	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9964	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9969	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9970	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
9971	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
33297	LEFT BRAKE - SHORT TO GROUND	blocking fault
33298	STEER LEFT VALVE - SHORT TO GROUND	blocking fault
33299	LINE CONTACTOR COIL - SHORT TO BATTERY	blocking fault
33302	NEGATIVE SUPPLY - SHORT TO BATTERY	blocking fault
33303	NEGATIVE SUPPLY - SHORT TO GROUND	blocking fault
33304	RIGHT BRAKE - SHORT TO GROUND	blocking fault
33305	STEER RIGHT VALVE - SHORT TO GROUND	blocking fault
33383	BEACON LIGHT- OPEN CIRCUIT	warning / function limited
33384	BEACON LIGHT - SHORT TO GROUND	warning / function limited
33406	LiFT UP VALVE - SHORT TO GROUND	blocking fault
33407	LIFT DN VALVE - SHORT TO GROUND	blocking fault
33562	BEACON LIGHT - SHORT TO BATTERY	warning / function limited
99143	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
99144	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
99145	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
99146	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
99147	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
99148	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
99149	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
241	AMBIENT TEMPERATURE SENSOR - OUT OF RANGE LOW	warning / function limited
242	AMBIENT TEMPERATURE SENSOR - OUT OF RANGE HIGH	warning / function limited
324	VALVE ENABLE DRIVER PERMANENTLY ON	blocking fault
426	MASTER MODULE TEMPERATURE - OUT OF RANGE	warning / function limited
447	VOLTAGE REFERENCE OUT OF RANGE	blocking fault
448	VOLTAGE REFERENCE OUT OF RANGE	blocking fault
2520	FUNCTIONS LOCKED OUT - CONSTANT DATA VERSION IMPROPER	blocking fault
2568	TEMPERATURE CUTOUT ACTIVE - AMBIENT TEMPERATURE TOO LOW	warning / function limited
3213	POWER MODULE MAIN CONTACTOR - SHORT TO GROUND OR OPEN CIRCUIT	blocking fault
3349	LINE CONTACTOR COIL - SHORT TO GROUND	blocking fault
3368	TWO SPEED VALVE - SHORT TO GROUND	warning / function limited
3369	TWO SPEED VALVE - OPEN CIRCUIT	warning / function limited
3370	TWO SPEED VALVE - SHORT TO BATTERY	warning / function limited
3371	GROUND ALARM- SHORT TO GROUND	warning / function limited
3379	HOUR METER- SHORT TO GROUND	warning / function limited
3380	HOUR METER- OPEN CIRCUIT	warning / function limited
3381	HOUR METER- SHORT TO BATTERY	warning / function limited
4235	POWER MODULE TOO HOT - REDUCED OPERATION	warning / function limited
4236	POWER MODULE TOO COLD - MODULE SHUTDOWN	blocking fault
4424	POWER MODULE VOLTAGE TOO LOW - MODULE SHUTDOWN	blocking fault
4425	POWER MODULE VOLTAGE TOO HIGH - MODULE SHUTDOWN	blocking fault
4473	POWER MODULE VOLTAGE TOO LOW - REDUCED OPERATION	warning / function limited
4474	POWER MODULE VOLTAGE TOO HIGH - REDUCED OPERATION	warning / function limited
4475	POWER MODULE - BDI FAULT	blocking fault
4476	BATTERY VOLTAGE TOO HIGH - UNPLUG CHARGER	blocking fault
4477	BATTERY VOLTAGE TOO HIGH - FORCING DISCHARGE	blocking fault
4478	GROUND MODULE - OVERCURRENT	blocking fault
6643	CANBUS FAILURE - LSS ANGLE SENSOR	blocking fault
6649	CANBUS FAILURE - TILT/TEMP SENSOR	blocking fault
8212	LSS PRESSURE SENSOR - DISAGREEMENT	blocking fault
8213	LSS ANGLE SENSOR - DIRECTION DISAGREEMENT	blocking fault
8214	LSS ANGLE SENSOR - OUT OF RANGE HIGH	blocking fault
8215	LSS ANGLE SENSOR - OUT OF RANGE LOW	blocking fault
8216	LSS ANGLE SENSOR HAS NOT BEEN CALIBRATED	blocking fault
9949	MACHINE CONFIGURATION OUT OF RANGE - CHECK ALL SETTINGS	blocking fault
9959	POWER MODULE FAILURE - INTERNAL ERROR	blocking fault
23196	PRESSURE SENSOR 1 OUT OF RANGE HIGH	blocking fault
23197	PRESSURE SENSOR 1 OUT OF RANGE LOW	blocking fault
23198	PRESSURE SENSOR 2 OUT OF RANGE HIGH	blocking fault
23199	PRESSURE SENSOR 2 OUT OF RANGE LOW	blocking fault
23200	LIFT UP SWITCH - INVALID SIGNAL	blocking fault
23201	LIFT DOWN SWITCH - INVALID SIGNAL	blocking fault
23202	POT HOLE PREVENTION SWITCH 1 - INVALID SIGNAL	blocking fault
23203	POT HOLE PREVENTION SWITCH 2 - INVALID SIGNAL	blocking fault
23204	CHARGE INTERLOCK - INVALID SIGNAL	blocking fault
23205	ELEVATION SENSORS - INVALID SIGNAL	blocking fault
33208	HORN - SHORT TO BATTERY	warning / function limited
33209	HORN SHORT TO GROUND	warning / function limited
33317	DRIVE FORWARD VALVE - OPEN CIRCUIT	blocking fault
33318	DRIVE FORWARD VALVE - SHORT TO BATTERY	blocking fault
33319	DRIVE FORWARD VALVE - SHORT TO GROUND	blocking fault
33320	DRIVE REVERSE VALVE - OPEN CIRCUIT	blocking fault
33321	DRIVE REVERSE VALVE - SHORT TO BATTERY	blocking fault
33322	DRIVE REVERSE VALVE - SHORT TO GROUND	blocking fault
33537	AUXILIARY LIFT DOWN VALVE - SHORT TO GROUND	blocking fault
33538	AUXILIARY LIFT DOWN VALVE - OPEN CIRCUIT	blocking fault
33539	AUXILIARY LIFT DOWN VALVE - SHORT TO BATTERY	blocking fault
33674	PLATFORM POWER - SHORT TO BATTERY	blocking fault
33675	PLATFORM POWER - OPEN CIRCUIT	blocking fault
33676	PLATFORM POWER - SHORT TO GROUND	blocking fault
84109	ELEVATION SWITCH CONTACTS DISAGREEMENT	warning / function limited
99162	EEPROM FAILURE POWER MODULE - CHECK ALL SETTINGS	blocking fault