JLG boom lifts (450AJ, 600AJ, 800AJ, 460SJ, 660SJ, 860SJ, 1250AJP, M450AJ, M600JP)
JLG error code 46108 — REAR LEFT SPEED SENSOR - RPM HIGH
Message on the display: REAR LEFT SPEED SENSOR - RPM HIGH
Code 46108 occurs in machines: JLG M600JP, E600JP.
blocking fault
Associated Power Module determines an overspeed condition (measured motor speed > DRIVE MAX + 15Hz) has occurred on a motor
Description from the JLG service manual, in the original wording.
Possible causes
The manual does not list the causes for this code: the service technician establishes them during diagnosis of the machine.
Checks from the manual
- Power cycle
What service does
A qualified service technician reads the code with the manufacturer's diagnostic tools, finds the cause, clears the code and carries out a function test.
Source: JLG Service and Maintenance Manuals: 600AJ (3121201), 800AJ (3120858), 460SJ, 860SJ, 1250AJP (3122581800), M450AJ (3121829), M600JP (3121711), Diagnostic Trouble Codes tables.
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.
Does code 46108 not go away?
RK Rental services JLG lifts at our workshop or on site at the customer's premises (construction site, factory, warehouse). We read the code, remove the cause and select the parts by serial number.
Neighbouring JLG codes
- 46100REAR LEFT BRAKE RETURN - SHORT TO BATTERY
- 46104REAR LEFT SPEED SENSOR - NOT RESPONDING PROPERLY
- 46105REAR RIGHT SPEED SENSOR - NOT RESPONDING PROPERLY
- 46109REAR RIGHT SPEED SENSOR - RPM HIGH
- 46130MAIN CONTACTOR / REAR RIGHT BRAKE RETURN - SHORT TO BATTERY
- 46136REAR LEFT BRAKE SUPPLY VOLTAGE - OUT OF RANGE LOW