JLG boom lifts (450AJ, 600AJ, 800AJ, 460SJ, 660SJ, 860SJ, 1250AJP, M450AJ, M600JP)
JLG error code 2251 — FUNCTION PROBLEM - TELESCOPE IN PERMANENTLY SELECTED
Message on the display: FUNCTION PROBLEM - TELESCOPE IN PERMANENTLY SELECTED · flash code 2/2
Code 2251 occurs in machines: JLG M450AJ, E450AJ, M600JP, E600JP, 340AJ, 400S, 460SJ, 600SC, 600SJC, 660SJC.
blocking fault
Input was CLOSED during startup
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
- Telescope In input = LOW while the machine is not Enabled
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 2251 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
- 2248FUNCTION PROBLEM - PLATFORM ROTATE RIGHT PERMANENTLY SELECTED
- 2249FUNCTION PROBLEM - JIB LIFT UP PERMANENTLY SELECTED
- 2250FUNCTION PROBLEM - JIB LIFT DOWN PERMANENTLY SELECTED
- 2252FUNCTION PROBLEM - TELESCOPE OUT PERMANENTLY SELECTED
- 2253FUNCTION PROBLEM - SWING LEFT PERMANENTLY SELECTED
- 2254FUNCTION PROBLEM - SWING RIGHT PERMANENTLY SELECTED