Bobcat M0922 (09-22) Fault Code: Fuel Level Out of Range Low
Also shown on the panel as 09-22
Fuel Level Out of Range Low · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
M0922 (panel code 09-22) sets when the gateway controller detects a short to ground on the fuel level sensor signal wire (3100 or 3180) for 30 seconds. The fuel gauge will peg empty when this code is active. It's an electrical fault in the fuel level sensing circuit, not an actual fuel shortage.
Low severity. M0922 is an information/sensor-circuit fault, not an engine or safety-critical failure. The gauge going to empty can be alarming, but the machine keeps running. That said, don't ignore it: if you can't trust your fuel gauge, you risk an unplanned run-dry, which on some fuel systems creates its own headaches. Diagnose within the shift rather than letting it ride.
What does Bobcat error code M0922 mean?
M0922 is Bobcat's fault code for a fuel level signal that has gone out of range low. The gateway controller sends 12 volts down the signal wire (labeled 3100 on some machines, 3180 on others) to power the fuel level sensor. When the controller sees that signal wire shorted to ground for 30 seconds, it sets M0922 and the fuel gauge on the dash will read empty regardless of how much fuel is actually in the tank.
This is a circuit integrity fault, not a fuel quantity measurement. The controller isn't reporting that the tank is empty, it's reporting that it can't get a valid reading because the wire path to ground has failed low. Until it's fixed, do not trust the fuel gauge on this machine; check fuel level visually or by another method to avoid running out unexpectedly.
The code applies across a wide range of Bobcat skid-steer and compact track loader models, including the S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, and T770 lines.
What triggers a Bobcat M0922 code?
The gateway controller sets M0922 when it detects a short to ground on the fuel level sensor signal wire (3100 or 3180) lasting 30 seconds, with the key switch in the run/enter (on) position.
Common causes of M0922
- Signal wire 3100 or 3180 shorted to ground somewhere in the harness.
- A failed fuel level sensor.
- A fault inside the gateway controller itself.
- Moisture, corrosion, or pushed-back pins in the gateway controller connectors, the fuel level sensor connector, the fuel harness, or the mainframe harness.
- An intermittent condition: if the code isn't active at the time of testing, the root cause may not be found right away. Likely culprits in this case are loose connections, corrosion, pushed-back pins, the controller, the wire harness, or some combination of these.
How to troubleshoot Bobcat M0922: first checks
- With the key on, check whether the fuel gauge is pegged at empty; this confirms the code's described symptom and helps you decide whether to trust the tank level by another means before continuing work.
- Inspect the gateway controller connectors, the fuel level sensor connector, the fuel harness, and the mainframe harness for moisture, corrosion, or pushed-back (backed-out) pins. These are the most commonly cited physical causes.
- Trace signal wire 3100 or 3180 (depending on model/harness variant) from the gateway controller to the fuel level sensor, checking for chafing, pinching, or contact with ground points, especially near the tank and mounting hardware.
- Test the fuel level sensor itself for a short to ground, separate from the wiring, to isolate sensor failure from harness failure.
- If the fault won't reproduce during testing, wiggle-test the harness and connectors while monitoring for the code to reset, since intermittent shorts often only show up under vibration or movement.
How the code clears
M0922 is self-resetting. No separate clearing procedure is listed for this code; once the short to ground is repaired and the signal returns to a normal state, the code should clear on its own.
Affected models and serial ranges
M0922 appears in our records across 16 Bobcat models. Match your machine by model and serial number.
| Model | Serial ranges |
|---|---|
| S510 | SN A3NJ11001-99999, SN A3NK11001-99999, SN ATZC11001-ATZC99999 |
| S530 | SN A7TV11001-99999, SN ATZD11001-99999 |
| S550 | SN A3NK11001-A3NL99999, SN A3NM11001-99999 |
| S570 | SN A7U711001-799999, SN A7U811001-899999 |
| S590 | SN ANMN11001-99999, SN ANMP11001-99999 |
| S630 | SN A3NT12370-99999, SN A3NU11001-11111, SN A3NU11112-99999 |
| S650 | SN A3NV11001-13098, SN A3NV13099-99999, SN A3NW11001-11248, SN A3NW11249-99999 |
| S750 | SN A3P211001-299999 |
| S770 | SN A3P411001-99999 |
| T550 | SN A7UJ11001-AJZV12276 |
| T590 | SN ALJU11001-999999, SN B37811001-999999, SN B3Z711001-999999 |
| T630 | SN A7PU11001-11663, SN A7PU11664-99999 |
| T650 | SN A3P012214-099999, SN A3P111242-199999 |
| T750 | SN ANKA11001-A99999 |
| T770 | SN A3P811001-899999, SN A3P911001-999999 |
| T870 | SN A3PG11001-99999, SN A3PH11001-99999 |
Frequently asked questions
What does Bobcat code M0922 mean?
It means the gateway controller detected a short to ground on the fuel level sensor's signal wire (3100 or 3180) for 30 seconds. This causes the fuel gauge to read empty even if there's fuel in the tank.
Is M0922 safe to keep driving with?
The code itself doesn't disable the machine, but it means you can't rely on the fuel gauge. Verify fuel level another way (dipstick, visual check, fuel receipts/hours) until the wiring or sensor is repaired, so you don't run out of fuel unexpectedly.
Why does my fuel gauge show empty when I still have fuel?
This is the expected symptom of M0922. The gateway controller pegs the gauge to empty as soon as it detects the shorted signal wire, since it can no longer read a valid fuel level from the sensor.
What wire is involved in M0922, 3100 or 3180?
It depends on the machine and harness variant. Some models use wire 3100, others use 3180, for the 12-volt supply to the fuel level sensor. Check the wiring diagram for your specific model to confirm which one applies.
Does M0922 clear itself once I fix the wiring?
Yes. This code is self-resetting. No separate manual clearing step is listed, so once the short to ground is repaired, the code should go away on its own the next time conditions are checked.
What if the code doesn't show up when I'm testing?
Intermittent shorts can hide during static testing. Likely causes in that case include loose connections, corrosion, pushed-back pins in a connector, the gateway controller, the wire harness, or a combination of these. Wiggle-testing the harness and connectors while watching for the fault to reappear can help.
Which Bobcat models can get code M0922?
It's documented across a broad range of skid-steer and track loader models, including S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, and T770.