JLG Telehandler 33195 Fault Code: UGM Output Drivers - Fork Tilt Down Valve - Short to Ground
UGM Output Drivers - Fork Tilt Down Valve - Short to Ground · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
Fault code 33195 on JLG telehandlers means the UGM (Universal Ground Module) detected a short to ground at output J2-19, the fork tilt down valve driver, or lost current feedback on the tilt return circuit at J3-6. The controller flags this as machine system distress, disables output J2-19, and disables both fork tilt up and down function until the machine is power cycled.
High severity. This fault disables fork tilt up and down entirely because the UGM decouples the current feedback input shared by both directions. The machine can still be operated for other functions, but tilt control is lost until the fault is cleared, which affects load handling safety. Treat it as a stop-soon condition, especially if a load is on the forks in a tilted position.
What does JLG Telehandler error code 33195 mean?
Fault code 33195 is set by the UGM, the controller that manages output drivers for hydraulic valve functions on the telehandler. This specific code points to the fork tilt down valve circuit at output J2-19.
When the UGM detects a short to ground at this output, or detects that current feedback has been lost on the tilt return input at J3-6, it sets an internal flag and logs the distress condition. Because the feedback circuit is shared between tilt up and tilt down, the UGM disables both directions of fork tilt as a protective action, not just tilt down.
The indicator listed for this fault is simply 'machine system distress,' meaning the operator display will show a general fault indication rather than a detailed message. The fault remains active, or latched, until the machine is power cycled.
What triggers a JLG Telehandler 33195 code?
The UGM sets this fault when it detects a short to ground at output J2-19 (fork tilt down valve) or when it detects a current feedback lost condition on input J3-6 (tilt return). The controller uses an internal flag to determine which of these two conditions triggered the fault.
Common causes of 33195
- Short to ground in the wiring harness feeding output J2-19, the fork tilt down valve driver
- Internal failure of the fork tilt down valve coil or solenoid causing a direct short to ground
- Damaged, chafed, or corroded wiring on the tilt return current feedback circuit at J3-6
- Connector corrosion or moisture intrusion at the valve connector or UGM connector pins tied to J2-19 or J3-6
- Failed UGM output driver for J2-19
How to troubleshoot JLG Telehandler 33195: first checks
- Inspect the wiring harness between the UGM and the fork tilt down valve for chafing, pinched sections, or exposed conductors that could touch ground or the frame
- Check the fork tilt down valve connector and the UGM connectors at J2-19 and J3-6 for corrosion, moisture, or loose pins
- Measure resistance from the J2-19 output circuit to chassis ground with the connector disconnected to confirm whether a hard short exists
- Check the tilt return feedback wiring at J3-6 for continuity and for any signs of damage that could cause a lost feedback condition
- Inspect the valve coil itself for signs of internal short, such as burned insulation or an abnormally low resistance reading to ground
How the code clears
This fault latches until the machine is power cycled. No separate reset procedure is listed beyond cycling power after the underlying short to ground or feedback loss condition has been corrected. Simply cycling power without repairing the wiring or valve issue will likely allow the fault to reset immediately once tilt down is commanded again.
Frequently asked questions
What does fault code 33195 mean on a JLG telehandler?
It means the UGM detected a short to ground at the fork tilt down valve output (J2-19) or lost current feedback on the tilt return circuit (J3-6). Both fork tilt up and tilt down are disabled as a result.
Why does this fault disable both tilt up and tilt down, not just tilt down?
The current feedback input at J3-6 is shared by both tilt directions. When the UGM decouples this feedback to protect the system, it disables tilt function in both directions, even though the fault is specific to the tilt down valve output.
Can I keep operating the telehandler with this fault active?
Other machine functions may still work, but fork tilt up and down will not respond. Operating with a load in an unsafe tilt position and no tilt control is a safety risk, so it should be treated as a stop-soon repair.
How do I clear fault code 33195 after repair?
The fault is latched until the machine is power cycled. Fix the short to ground or the feedback wiring issue first, then cycle power. If the underlying problem is not repaired, the fault will likely return as soon as tilt down is commanded.
What usually causes a short to ground on a valve output like this?
Common causes include chafed or pinched wiring rubbing against the frame, moisture or corrosion in connectors, or an internal short inside the valve coil itself.
Is this an electrical problem or a hydraulic problem?
It starts as an electrical fault, a short to ground on the output driver circuit or a lost feedback signal, but it directly affects the hydraulic tilt function since the valve cannot be commanded until it is resolved.