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JLG boom lifts (450AJ, 600AJ, 800AJ, 460SJ, 660SJ, 860SJ, 1250AJP, M450AJ, M600JP)

JLG error code 23112 — FUNCTION PROBLEM - PLATFORM LEVEL DOWN PERMANENTLY SELECTED

Message on the display: FUNCTION PROBLEM - PLATFORM LEVEL DOWN PERMANENTLY SELECTED

Code 23112 occurs in machines: JLG M600JP, E600JP, 340AJ, 400S, 460SJ, 600SC, 600SJC, 660SJC.

blocking fault

The machine is in Ground mode and the Platform Level Down input = High at Start Up

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

  • Function switch returns to neutral and the machine is not in the Enabled state.

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 23112 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.

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