Bobcat M0514 (05-14) Fault Code: Hydraulic Charge Pressure Extremely Low
Also shown on the panel as 05-14
Hydraulic Charge Pressure Extremely Low · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
M0514 (panel form 05-14) sets when the gateway controller sees a hydraulic charge pressure sensor signal below the specified value for 30 seconds while the key switch is in run/enter and the engine is running. It points to low charge pressure or a wiring/sensor problem on the charge pressure circuit, not a single confirmed part failure.
High severity. Low hydraulic charge pressure can mean the charge pump is not properly supplying the hydraulic system, which risks pump and hydrostatic drive damage if the machine keeps running. Diagnose before continuing normal work.
What does Bobcat error code M0514 mean?
M0514 is Bobcat's code for extremely low hydraulic charge pressure, as reported by the hydraulic charge pressure sensor. The gateway controller watches the sensor's signal wire (labeled 3190 or 3420 depending on the machine and harness version) and if that signal reads below the specified threshold for the machine for 30 seconds while the engine is running, it logs M0514.
The charge pressure sensor runs on an 8.0 volt supply from the gateway controller. This is a low-voltage reference signal, not the main hydraulic system pressure itself, so a wiring or supply fault can trigger the code just as easily as an actual loss of hydraulic charge pressure.
Charge pressure is what keeps the hydrostatic drive system supplied and pressurized in the background. If it drops too low, the drive pump and motors can run without adequate lubrication and cooling flow, which is why this code should not be ignored.
What triggers a Bobcat M0514 code?
The code sets when the gateway controller detects a charge pressure sensor signal below the specified value for that machine for 30 seconds, with the key switch in run/enter and the engine running.
Common causes of M0514
- Low hydraulic oil level
- Low hydraulic charge pressure caused by a mechanical problem with the charge pump
- A fault on the 8.0 volt supply wire to the sensor (labeled 5190 or 3400 depending on harness version)
- A failed or failing hydraulic charge pressure sensor
- A gateway controller fault
- Moisture, corrosion, or pushed-back pins in the gateway controller connectors, the hydraulic charge pressure sensor connector, or the mainframe wire harness
- Intermittent connection issues (loose connections, corrosion, pushed-back pins, controller, or harness) that may not be present at the time of testing
How to troubleshoot Bobcat M0514: first checks
- Check the hydraulic oil level and top off if low before doing any further diagnosis
- Inspect the hydraulic charge pressure sensor connector and the gateway controller connectors for moisture, corrosion, or pins that have been pushed back out of place
- Check the mainframe wire harness along the run to the charge pressure sensor for chafing, pinches, or loose connections
- Verify the 8.0 volt supply to the sensor is present and steady at the connector
- With the engine running, watch for the code re-triggering. If it does not appear at the time of testing, treat the intermittent-connection causes (loose connections, corrosion, pushed-back pins, controller, or harness) as still possible
- If wiring and supply voltage check out, inspect the charge pump for a mechanical problem that would explain genuinely low charge pressure
How the code clears
M0514 is self resetting. Once the underlying cause is repaired and hydraulic charge pressure reads normal for the required time, the code clears on its own with no separate manual reset step listed.
Affected models and serial ranges
M0514 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 M0514 mean?
It means the gateway controller detected a hydraulic charge pressure sensor signal below the specified value for that machine for 30 seconds while the engine was running. It's logged as extremely low hydraulic charge pressure.
Is M0514 the same as panel code 05-14?
Yes. 05-14 is the numeric panel display form of M0514 on Bobcat machines that use that display style.
Can low hydraulic oil cause M0514?
Yes. Low hydraulic oil level is listed as a possible cause, since it can reduce charge pressure enough to trip the sensor threshold.
Is it safe to keep operating with M0514 active?
It's not recommended. Low hydraulic charge pressure can affect lubrication and cooling of the hydrostatic drive components, so the machine should be checked before continued heavy use.
Do I need a scan tool to clear M0514?
No separate reset procedure is listed. The code is self resetting once the cause is fixed and the sensor reads a normal signal again.
Which Bobcat models use this code?
M0514 applies to S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, and T770 and T870 models.
Why does the wire number for the sensor signal differ between machines?
Bobcat's documentation lists two harness variants, one using wire 3190 and one using wire 3420 for the sensor signal, with matching differences in the 8.0 volt supply wire number (5190 or 3400). Which applies depends on the specific machine harness.