Bobcat H2307 (23-07) Fault Code: Rear Base Solenoid Open Circuit
Also shown on the panel as 23-07 · Also called Rear Base Output Open Circuit
Rear Base Solenoid Open Circuit · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
H2307 (panel form 23-07) means the auxiliary controller has detected an open circuit on the rear base solenoid, signal wire 4440, or return wire 2440. When this code sets, the rear base function is disabled until the fault is repaired and power is cycled.
Medium severity. H2307 disables the rear base hydraulic function but does not by itself stop the machine from driving or performing other work. It should be diagnosed before relying on the rear auxiliary female coupler for attachment work, since that circuit will not function while the code is active.
What does Bobcat error code H2307 mean?
.H2307 is set by the auxiliary controller when it sees an open circuit related to the rear base solenoid, either on signal wire 4440 or return wire 2440. The rear base solenoid is responsible for directing hydraulic flow through the rear auxiliary female coupler, which typically feeds a rear-mounted attachment.
When this open circuit is detected, the controller disables the rear base function as a protective measure. This means any attachment relying on that rear coupler flow will not operate correctly until the fault is found and cleared.
This is an electrical continuity fault in the hydraulic control circuit rather than a mechanical hydraulic failure, though the end result is a hydraulic function that will not work.
Common causes of H2307
- Signal wire 4440 shorted to supply voltage or open
- Return wire 2440 open
- Faulty rear base solenoid
- Faulty auxiliary controller
- Moisture, corrosion, or pushed back pins in the auxiliary controller connectors, rear base solenoid connector, or the mainframe harness
- Intermittent fault: if the code is not active at the time of testing, the cause may not be found immediately; probable causes in this case include loose connections, corrosion, pushed back pins, the controller, the wire harness, or a combination of these problems
How to troubleshoot Bobcat H2307: first checks
- With key switch / (run/enter) on, check for the code being active or intermittent before starting teardown
- Inspect the auxiliary controller connectors and the rear base solenoid connector for moisture, corrosion, or pushed back pins
- Trace signal wire 4440 for signs of chafing, shorts to supply voltage, or an open condition
- Check return wire 2440 for continuity and any open condition
- Inspect the mainframe harness along the run to the rear base solenoid for damage or loose connections
- If no fault is found and the code was intermittent, recheck all connectors and pins again since intermittent opens often hide during testing
How the code clears
Once the wiring, connector, solenoid, or controller issue has been repaired, the code is cleared by cycling power (turning the key switch off and back on). No separate reset procedure or scan tool clearing step is listed for this code.
Affected models and serial ranges
H2307 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 ATZC11001-99999 |
| 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 A39511001-99999, 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 H2307 mean?
It means the auxiliary controller found an open circuit on the rear base solenoid, on signal wire 4440, or on return wire 2440. This disables the rear base hydraulic function, which normally sends flow through the rear auxiliary female coupler.
Will my Bobcat still run with H2307 active?
Yes, the machine can still operate, but the rear base function that controls flow to the rear auxiliary female coupler will be disabled until the issue is fixed.
What is the panel display version of H2307?
On the display panel it may show as 23-07, which is the numeric form of the same code.
How do I clear H2307 after repair?
Cycle power by turning the key switch off and back on after the wiring, connector, solenoid, or controller problem has been corrected. No other clearing procedure is listed.
Which Bobcat models can show H2307?
This code applies to S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, T770, and T870 models.
Why does H2307 come and go instead of staying on?
An intermittent open circuit, often from corrosion, moisture, or a pushed back pin in a connector, can cause the code to set and then clear itself once contact is restored. If the code isn't active during testing, the exact cause may not be found until the fault reoccurs or a thorough connector and wiring inspection turns up the problem.
What should I inspect first if I get H2307?
Start with the auxiliary controller connectors, the rear base solenoid connector, and the mainframe harness for corrosion, moisture, or pushed back pins, then check wires 4440 and 2440 for opens or shorts.