JLG boom lifts (450AJ, 600AJ, 800AJ, 460SJ, 660SJ, 860SJ, 1250AJP, M450AJ, M600JP)
JLG error code 33172 — LIFT DOWN VALVE - SHORT TO GROUND
Message on the display: LIFT DOWN VALVE - SHORT TO GROUND · flash code 3/3
Code 33172 occurs in machines: JLG 860SJ, 800S, 600AJ, 600S, 660SJ, 800AJ, 800A, 460SJ, 400S.
blocking fault
There is a Short to Battery to the Lift Down Valve.
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
- Check Harness for damage.
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 33172 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
- 33169PVG ENABLE VALVE - SHORT TO BATTERY
- 33170LIFT DOWN VALVE - OPEN CIRCUIT
- 33171LIFT DOWN VALVE - SHORT TO BATTERY
- 33173RESTRICTED TO TRANSPORT - AXLE LOCKOUT VALVE - SHORT TO BATTERY OR OPEN CIRCUIT
- 33174RESTRICTED TO TRANSPORT - BRAKE - SHORT TO BATTERY OR OPEN CIRCUIT
- 33175JIB ROTATE LEFT VALVE - OPEN CIRCUIT