Bobcat M0314 (03-14) Fault Code: Battery Voltage Extremely Low
Also shown on the panel as 03-14 · Also called Battery Voltage Extremely, System Voltage Extremely Low
Battery Voltage Extremely Low · ai-assisted, editor-reviewed · Last updated 2026-07-21
TL;DR
M0314 (panel code 03-14) sets when the Bobcat gateway controller sees battery voltage on un-switched power wires 1110 and 1130 drop below 8 volts while the key switch is on and engine rpm is below 1700 RPM. It points to a serious charging, battery, or wiring problem, not a minor nuisance code.
High severity. Extremely low battery voltage can cause erratic controller behavior, unexpected shutdowns, or loss of machine functions while operating. Treat this as a stop-and-diagnose issue, especially if it recurs or the machine struggles to start.
What does Bobcat error code M0314 mean?
M0314 is set by the gateway controller when it measures battery voltage on the un-switched supply wires 1110 and 1130 at less than 8 volts. These are constant power feeds to the controller, so this isn't about a sensor circuit, it's the machine telling you its core electrical supply is critically weak.
This code only sets with the key switch or run/enter switch on and engine rpm below 1700 RPM, meaning it's most likely to appear at startup, at idle, or when the engine isn't yet spinning the alternator fast enough to recharge a weak battery.
Because the fault sits on the main power feed, it can affect the gateway controller's ability to communicate with other modules, which is why a low-voltage event like this can cascade into other faults or unexplained electrical glitches.
What triggers a Bobcat M0314 code?
Code sets when battery voltage on wires 1110 and 1130 is measured below 8 volts with the key switch/run-enter on and engine rpm below 1700 RPM.
Common causes of M0314
- Accessory or key switch (run/enter) left on, draining the battery without the engine running to recharge it
- An active alternator problem, flagged separately as code M4109 'Alternator Voltage Low', which means the battery isn't being recharged properly
- Poor or corroded battery connections that increase resistance and drop voltage under load
- Controller supply wire 1110 or 1130 shorted to ground or open, cutting or disrupting the power feed to the gateway controller
- Controller ground wire 2500 or 2510 open, which can affect how the controller reads supply voltage
- A weak, damaged, or discharged battery
- A fault internal to the gateway controller itself
- Moisture, corrosion, or pushed-back pins in the gateway controller connectors, alternator connector, battery wires, mainframe harness, or engine harness
- Intermittent faults from loose connections, corrosion, or pushed-back pins that may not be present or measurable at the time of testing
How to troubleshoot Bobcat M0314: first checks
- Confirm the key switch and accessory/run-enter switch were not left on with the engine off, which can drain the battery on its own
- Check for code M4109 'Alternator Voltage Low' present alongside M0314, since an alternator problem will keep the battery from recharging and can be the root cause
- Inspect battery terminals and cable connections for corrosion, looseness, or damage, and clean/tighten as needed
- With a multimeter, check voltage directly at wires 1110 and 1130 at the battery and at the gateway controller connector to see where the drop occurs
- Check controller ground wires 2500 and 2510 for continuity and a clean, tight ground connection
- Inspect the gateway controller connectors, alternator connector, battery wire connectors, mainframe harness, and engine harness for moisture, corrosion, or pushed-back pins
- Load test or otherwise verify the condition of the battery itself if connections and wiring check out good
- If the code is intermittent, wiggle-test harness connectors and check for loose or corroded terminals since the fault may not be present at the time of testing
How the code clears
This code is self resetting once the underlying voltage condition is corrected. No separate clearing procedure is listed beyond fixing the root cause and letting the controller see normal battery voltage again.
Affected models and serial ranges
M0314 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 M0314 mean?
It means the gateway controller measured battery voltage on the main un-switched power wires 1110 and 1130 at less than 8 volts while the key switch was on and engine rpm was below 1700 RPM. It signals a serious battery or charging system problem, not a sensor glitch.
Can I keep operating the machine with M0314 active?
It's not recommended. Extremely low battery voltage can affect the gateway controller's operation and communication with other modules, which can lead to unpredictable electrical behavior or a stall. Diagnose and correct the cause before continuing normal work.
Does M0314 clear itself after I fix the problem?
Yes. It's listed as self resetting, so once battery voltage returns to normal and stays there, the code should clear on its own without a manual reset procedure.
Is M0314 related to the alternator?
It can be. One listed cause is an active M4109 'Alternator Voltage Low' code, which means the alternator isn't charging the battery properly. If M4109 is also present, chasing the charging system is a priority.
How is M0314 different from M0311 or M0309?
M0311 covers battery voltage that's extremely high, the opposite electrical problem, usually pointing to an overcharging condition rather than a weak battery or bad connection. M0309 covers battery voltage that's low but not to the extreme 8 volt threshold that triggers M0314, so M0309 can be an earlier warning sign before voltage drops far enough to set M0314.
What wires and grounds should I check first for M0314?
Start with un-switched power wires 1110 and 1130 at the battery and gateway controller, then check controller ground wires 2500 and 2510 for continuity. Also inspect connectors at the gateway controller, alternator, battery, mainframe harness, and engine harness for corrosion or pushed-back pins.
Why does M0314 only set below 1700 RPM?
Below that rpm threshold, the alternator may not be generating enough output to compensate for a weak battery or wiring problem, so the low-voltage condition becomes visible to the controller. At higher rpm, alternator output alone may mask the underlying issue temporarily.