JLG Scissor Lift 2315 Fault Code: Ground Controls - Operating Mode Interlock - Stabilizers Not Deployed
Ground Controls - Operating Mode Interlock - Stabilizers Not Deployed · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
Code 2315 sets when the platform station is active but the machine detects that the outriggers/stabilizers are not deployed. JLG lists the trigger as the platform station being active while one or both inputs J7-7 and J7-20 are low. The fault indicator is described as machine system distress, with indicator 15 tied to outriggers not deployed at the platform.
High severity. This is a safety interlock fault, not a simple sensor glitch. While active it blocks engine start from the platform station under certain conditions and restricts or derates lift, telescope, and retrieval functions. Treat it as a stop-and-check condition before continuing to operate.
What does JLG Scissor Lift error code 2315 mean?
Code 2315 is JLG's ground controls operating mode interlock fault for stabilizer deployment. It exists to stop the machine from raising or extending the platform when the stabilizers/outriggers have not been properly deployed and confirmed, which is a core stability safety check on scissor lifts equipped with outriggers.
JLG describes two indicator conditions tied to this fault: a general 'machine system distress' indicator, and indicator 15 specifically flagging that the outriggers are not deployed at the platform station.
Beyond just displaying a fault, the control system actively changes machine behavior while this code is active. It will not allow engine start from the platform station if cabin mode was the last valid mode, it blocks changeover into platform mode, and it restricts lift and telescope functions depending on boom angle and chassis tilt readings until the interlock condition clears.
What triggers a JLG Scissor Lift 2315 code?
The fault sets when the platform station is active and one or both inputs J7-7 and J7-20 read low. It latches until both J7-7 and J7-20 become high again.
Common causes of 2315
- Outriggers/stabilizers not fully deployed or not deployed correctly, so the deployment sensors do not confirm a valid stabilizer state.
- A faulty or misaligned stabilizer position switch or sensor feeding inputs J7-7 or J7-20, even when the stabilizers are physically deployed.
- Wiring or connector problems (open circuit, corrosion, damaged pins) on the J7-7 or J7-20 circuits preventing a high signal from reaching the controller.
- The platform station being made active while the machine was last operating in cabin mode, triggering the interlock logic before a proper mode changeover has occurred.
- Chassis tilt conditions detected by the tilt sensor, which combine with this interlock to further restrict or derate lift and telescope functions during any retrieval sequence.
How to troubleshoot JLG Scissor Lift 2315: first checks
- Confirm the outriggers/stabilizers are actually and fully deployed on all sides before assuming a sensor or wiring fault.
- Visually inspect the stabilizer deployment switches and their connectors for damage, corrosion, or loose pins, focusing on the circuits feeding J7-7 and J7-20.
- Check wiring harness continuity between the stabilizer switches and the controller, looking for chafed, pinched, or disconnected wiring.
- Verify which operating mode (cabin or platform) was last valid before the fault appeared, since a mode changeover in progress can be part of the trigger condition.
- If the machine has a chassis tilt sensor, check whether a tilt condition is present, since tilt angle readings interact with this interlock to limit or derate lift and telescope operation during retrieval.
How the code clears
No separate reset procedure is listed for this code. JLG states the fault latches until both J7-7 and J7-20 become high, meaning the stabilizer deployment inputs must both indicate a valid deployed state before the interlock clears on its own.
Frequently asked questions
What does JLG fault code 2315 mean?
It means the ground controls operating mode interlock has detected that the platform station is active while the outriggers or stabilizers are not confirmed deployed. JLG ties this to inputs J7-7 and J7-20 being low.
Why won't the engine start from the platform after code 2315 appears?
JLG's control logic deactivates the engine start output from the platform station if the platform station is active and cabin mode was the last valid operating mode, which is one of the actions tied to this fault.
Can I still operate the lift or telescope functions with code 2315 active?
Function availability is restricted. The lift function may be inhibited until the boom retracted switch reads high, and telescope out is inhibited until boom angle drops below 10 degrees. Chassis tilt readings at or above the first trip point further derate function speed, and at or above the second trip point telescope out is immediately inhibited.
How do I clear fault code 2315?
There is no separate reset step described. The fault clears automatically once both stabilizer deployment inputs, J7-7 and J7-20, read high, confirming the stabilizers are properly deployed.
What should I check first if I get this code?
Start by physically confirming the outriggers or stabilizers are fully deployed. If they are, inspect the deployment switches, connectors, and wiring on the J7-7 and J7-20 circuits for faults before assuming a controller problem.
Is code 2315 dangerous to ignore?
Yes. It is a stability safety interlock. Bypassing or ignoring it risks operating the platform without confirmed stabilizer support, which is a tip-over and fall hazard.