JLG boom lifts (450AJ, 600AJ, 800AJ, 460SJ, 660SJ, 860SJ, 1250AJP, M450AJ, M600JP)
JLG error code 8280 — RECALIBRATION REQUIRED - LSS SENSOR DISAGREEMENT
Message on the display: RECALIBRATION REQUIRED - LSS SENSOR DISAGREEMENT
Code 8280 occurs in machines: JLG 1250AJP.
warning / function limited
The control system has determined there is a difference between the calculated platform load of strain gauge 1 and 2 of more than 50 lbs for 3 seconds. If the platform is not considered to be overloaded boom functions will be restricted to creep. Fault will persist until power cycled but reevaluated after engine start. Recalibration is recommended.
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
- Verify there is no mechanical binding in load sensing structure. Replace sensor if issue persists.
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 8280 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.