Bobcat M7304 (73-04) Fault Code: Remote Control Receiver No Communication
Also shown on the panel as 73-04 · Also called Remote Control No Communication
Remote Control Receiver No Communication · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
M7304 (panel form 73-04) sets when the gateway controller loses CAN communication with the remote control receiver after it had previously been communicating. When this code sets, the machine will shut down. It is self-resetting once the communication fault is repaired.
High severity. The machine shuts down when this code sets, so it stops work immediately. It is not a slow-developing wear issue, it is a communication loss that halts operation until the wiring, fuse, connector, or receiver problem is fixed.
What does Bobcat error code M7304 mean?
M7304 is set by the gateway controller when it stops seeing CAN communication from the remote control receiver unit, but only after that communication had been established at some point. In other words, the system was talking to the remote receiver and then the link dropped.
This is a CAN bus and wiring fault, not a hydraulic or engine fault. The gateway controller, the remote control receiver, fuses, connectors, and the CAN wires between them are all part of the circuit that can cause this.
Because the machine shuts down when the code sets, this is treated as a functional stop, not just a warning light. Operators should not expect to keep working through this code.
Common causes of M7304
- CAN connector not plugged in at the gateway controller, receiver, or remote control base.
- A blown fuse: depending on model and harness variant, this is FRC1 fuse 7 or FRC2 fuse 1, or on other variants FRC1 fuse 8 or FRC1 fuse 5.
- CAN communication wires 9500, 9600, and either 9400 or 3090 (depending on harness variant) shorted to ground or open.
- A fault in the remote control base itself.
- Moisture, corrosion, or pushed-back pins in the gateway controller connectors, the ACD connector, or the remote control connector.
- An intermittent condition where the code is not active at the time of testing. In this case the cause may be loose connections, corrosion, pushed-back pins, the controller itself, the wire harness, or a combination of these.
How to troubleshoot Bobcat M7304: first checks
- Confirm the key switch is on (run/enter), since this is the condition under which the code is checked for.
- Visually inspect the CAN connector at the gateway controller and remote control receiver to make sure it is fully plugged in and seated.
- Check FRC1 fuse 7 and FRC2 fuse 1 (or on some models FRC1 fuse 8 and FRC1 fuse 5) for continuity and secure fit in the fuse holder.
- Inspect the gateway controller connectors, the ACD connector, and the remote control connector for moisture, corrosion, or pins that have been pushed back out of place.
- Check CAN wires 9500, 9600, and 9400 or 3090 for shorts to ground or open circuits, using a wiring diagram matched to the specific model and harness.
- Inspect the remote control base for damage or a fault that could interrupt communication.
- If the code is not active during testing, treat it as intermittent and recheck all connections, harness routing, and connector pins rather than assuming no fault exists.
How the code clears
This code is self-resetting. Once the underlying CAN communication fault, fuse, connector, or wiring issue is repaired, the code clears on its own. No separate clearing step is listed.
Affected models and serial ranges
M7304 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 M7304 mean?
It means the gateway controller lost CAN communication with the remote control receiver unit after that communication had previously been working. The machine shuts down when this happens.
Will the machine keep running with M7304 active?
No. The description states that when M7304 occurs, the machine will shut down.
Do I need a scan tool to clear M7304?
No separate clearing step is listed. The code is self-resetting once the communication fault, wiring, fuse, or connector problem causing it is repaired.
Which fuses should I check first for M7304?
Check FRC1 fuse 7 and FRC2 fuse 1. On some model variants the relevant fuses are FRC1 fuse 8 and FRC1 fuse 5 instead. Confirm which harness variant your machine uses before condemning a fuse.
What if I can't find the cause because the code isn't active during testing?
That is a recognized possibility with M7304. Probable causes in that case include loose connections, corrosion, pushed-back pins, the controller itself, the wire harness, or a combination of these. Recheck all connectors carefully even if nothing tests bad right away.
Which Bobcat models can show code M7304?
Listed affected models include the S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, and T770, and T870.