Bobcat M0710 (07-10) Fault Code: Hydraulic Oil Temperature High
Also shown on the panel as 07-10 · Also called Hydraulic Fluid Temperature Too High
Hydraulic Oil Temperature High · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
M0710 (panel code 07-10) sets when the gateway controller sees 3.5 volts on the hydraulic oil temperature sensor signal wire (wire 3220 or wire 3300, depending on machine wiring) for 5 seconds, which corresponds to a hydraulic oil temperature between 230°F and 234°F. It means the hydraulic system is running dangerously hot and needs attention before continued operation.
High severity. Hydraulic oil at or above this temperature range can damage seals, hoses, pumps, and motors, and can cause a sudden loss of hydraulic function. The code is self resetting, but the underlying heat problem will not fix itself and should be addressed before returning to full work.
What does Bobcat error code M0710 mean?
M0710 is Bobcat's code for excessive hydraulic oil temperature. The gateway controller reads a voltage on the hydraulic oil temperature sensor's signal wire (wire 3220 on some machines, wire 3300 on others) and sets the code when that voltage reaches 3.5 volts and holds there for 5 seconds. This voltage corresponds to a hydraulic oil temperature between 230°F and 234°F.
The hydraulic oil temperature sensor is a variable resistor with an operating range of 500 to 3000 ohms. As oil temperature climbs, sensor resistance rises, and the voltage on the signal wire rises with it. With the sensor unplugged, the controller should see 7.85 volts (±0.05) on the signal wire, which is useful for confirming the wiring and controller are working independently of the sensor.
In plain terms, this code is telling you the hydraulic system is overheating, not that the sensor itself is necessarily bad. Overheated hydraulic oil loses viscosity and lubricating ability, which accelerates wear on pumps, valves, and motors, and can lead to sudden performance loss or component failure if the machine keeps working.
What triggers a Bobcat M0710 code?
The code sets when the gateway controller detects 3.5 volts on the hydraulic oil temperature signal wire (3220 or 3300) for 5 seconds, corresponding to a hydraulic oil temperature of 230°F to 234°F. This can only be evaluated with the key switch in the run/enter position and the engine running.
Common causes of M0710
- Low hydraulic oil level, which reduces the oil's ability to absorb and dissipate heat.
- External obstruction of airflow across the radiator and hydraulic oil cooler, such as debris, mud, or crop material blocking the fins.
- High ambient temperature combined with extreme working conditions that push the hydraulic system beyond its normal cooling capacity.
- A failing or out-of-range hydraulic oil temperature sensor.
- A gateway controller fault.
- Moisture, corrosion, or pushed-back pins in the gateway controller connectors, the hydraulic oil temperature sensor connector, or the mainframe wire harness.
- An intermittent condition where the code is not active at the time of testing. In these cases the cause may be loose connections, corrosion, pushed-back pins, the controller, the wire harness, or a combination of these.
How to troubleshoot Bobcat M0710: first checks
- Check the hydraulic oil level and top off if low, since low oil volume heats up faster and cools poorly.
- Inspect the radiator and hydraulic oil cooler for external obstructions like dirt, debris, or crop buildup blocking airflow, and clean as needed.
- Consider recent working conditions: high ambient heat combined with heavy, sustained hydraulic loads can push oil temperature into the fault range even with a healthy system.
- Inspect the hydraulic oil temperature sensor connector and the gateway controller connectors for moisture, corrosion, or pushed-back pins.
- With the sensor disconnected, check for 7.85 volts (±0.05) on the signal wire (wire 3220 or 3300, depending on the machine) to verify the wiring and controller are supplying the expected reference voltage.
- Test the hydraulic oil temperature sensor's resistance and confirm it falls within its 500 to 3000 ohm operating range across its temperature range.
- If the code appears intermittent and is not active during testing, focus on connections, corrosion, and pushed-back pins in the harness and connectors, since these are the most common causes of intermittent faults.
How the code clears
This code is self resetting. No separate clearing step is listed. Once the hydraulic oil temperature drops back into a normal range and the underlying cause is corrected, the code should clear on its own without a manual reset procedure.
Affected models and serial ranges
M0710 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 M0710 mean?
M0710 means the hydraulic oil temperature has climbed into the range of 230°F to 234°F, as detected by the hydraulic oil temperature sensor and gateway controller. It signals that the hydraulic system is overheating.
Is M0710 safe to keep working through?
It is not recommended. Hydraulic oil in this temperature range can damage seals, hoses, and internal pump or motor components, and can lead to a sudden loss of hydraulic function. Stop and address the cause before continuing heavy work.
Do I need to manually reset M0710?
No. The code is self resetting once the hydraulic oil temperature returns to normal and the fault condition clears. No separate clearing procedure is listed.
Why does M0710 come and go instead of staying on?
An intermittent M0710 can be caused by loose connections, corrosion, or pushed-back pins in the gateway controller connectors, sensor connector, or mainframe wire harness. Because it is intermittent, the specific fault may not be present at the time of testing, so a careful visual and continuity check of the wiring and connectors is important.
How do I know if the sensor or the wiring is at fault versus actual overheating?
Check the hydraulic oil level and cooler airflow first, since those are common real-heat causes. If oil level and cooling are fine, disconnect the sensor and check for 7.85 volts (±0.05) on the signal wire; a reading far outside that suggests a wiring or controller issue rather than the sensor itself. Also verify the sensor's resistance falls within its 500 to 3000 ohm operating range.
Which wire does M0710 use, 3220 or 3300?
It depends on the specific machine's wiring. Some Bobcat models use wire 3220 for the hydraulic oil temperature sensor signal, while others use wire 3300. Both follow the same voltage and timing logic for setting the code.
What conditions have to be met for the controller to check for M0710?
The key switch must be in the run/enter position and the engine must be running. Only under these conditions does the gateway controller evaluate the hydraulic oil temperature sensor signal for the fault.