DiagnosticsMedium severity

Bobcat H2706 (27-06) Fault Code: Front Rod Solenoid Short to Ground

Also shown on the panel as 27-06 · Also called Front Rod Output Short to Ground, Front Rod Solenoid Short To Ground, Front Rod Solenoid Short to Ground

Front Rod Solenoid Short to Ground · ai-assisted, editor-reviewed · Last updated 2026-07-13

TL;DR

Bobcat code H2706 (panel display 27-06) sets when the auxiliary controller commands the front rod solenoid but does not detect voltage on signal wire 4330 or return wire 2330 (or wires 4110/2110 on machines with the deluxe MX controller). The front rod solenoid directs hydraulic flow through the front auxiliary male coupler, and once this code sets, that solenoid is disabled.

Medium severity. H2706 disables the front rod solenoid, so front auxiliary hydraulic flow through that coupler stops working. The machine itself is not damaged and can typically still be driven, but any attachment relying on the front rod function will be inoperable until the fault is fixed.

What does Bobcat error code H2706 mean?

H2706 is Bobcat's code for a front rod solenoid short to ground, shown on the panel as 27-06. It applies to the auxiliary hydraulic circuit that sends flow out through the front auxiliary male coupler, used to run attachments like grapples, augers, or breakers.

The controller (either the auxiliary controller or, on some setups, the deluxe MX controller) sends a command to energize the front rod solenoid and expects to see voltage on the signal wire (4330, or 4110 on deluxe MX systems) and the return wire (2330, or 2110 on deluxe MX systems). If it does not see that voltage when commanded, it sets H2706 and disables the front rod solenoid so the circuit is not left in an unknown or damaging state.

This is a hydraulic control circuit fault, not a system pressure or engine fault. It affects the electrical command path to the solenoid, but the consequence is loss of attachment function on the front rod side of the auxiliary circuit.

Common causes of H2706

Signal wire 4330 or return wire 2330 (or 4110/2110 on deluxe MX controller systems) shorted to ground.
Faulty front rod solenoid.
Faulty auxiliary controller or deluxe MX controller.
Moisture, corrosion, or pushed-back pins in the auxiliary controller connectors, front rod solenoid connector, the mainframe harness, or on deluxe MX systems the power harness or control harness.
Intermittent fault from loose connections, corrosion, pushed-back pins, the controller, or the wire harness, or a combination of these, especially if the code is not active at the time of testing.

How to troubleshoot Bobcat H2706: first checks

Confirm the key switch is in run/enter, auxiliaries are enabled, and a front rod command is being given, since these are the conditions under which the code sets.
Inspect the front rod solenoid connector, the auxiliary controller (or deluxe MX controller) connectors, and the mainframe harness connectors for moisture, corrosion, or pins that have been pushed back out of their sockets.
Check signal wire 4330 and return wire 2330 (or 4110/2110 on deluxe MX systems) for chafing, pinching, or contact with ground along the harness routing.
Test the front rod solenoid itself for an internal short to ground.
If the code is not currently active, treat it as intermittent and recheck all connections, harness routing, and pin engagement rather than assuming the part is good.

How the code clears

Once the repair is complete, cycle the key power off and back on. No separate clearing step is listed beyond cycling power.

Affected models and serial ranges

H2706 appears in our records across 18 Bobcat models. Match your machine by model and serial number.

Model	Serial ranges
E35	SN A93K110001-99999, SN AC2P11001-99999
E45	SN AHHC11001-99999
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

Safety-critical: confirm before use

Hydraulic safety: lower all attachments, release stored hydraulic pressure, and stop the engine before disconnecting any hydraulic component. High-pressure fluid can cause serious injury. Thresholds, component locations, wire numbers, fuse locations, and reset procedures can vary by model, configuration, and serial number. Confirm them in the service documentation for your exact machine.

Ask the AI about H2706 Or ask the community in the forum

Frequently asked questions

What does Bobcat code H2706 mean?

It means the controller commanded the front rod solenoid to energize but did not detect voltage on the signal or return wire for that circuit, so it disabled the solenoid. It shows on the panel as 27-06.

Can I still use my Bobcat with H2706 active?

You can generally still drive and operate the machine, but the front rod solenoid is disabled, so any attachment function relying on flow through the front auxiliary male coupler will not work until the fault is repaired.

Is H2706 caused by a bad solenoid or a wiring problem?

It can be either. Bobcat lists a shorted signal or return wire, a failed front rod solenoid, a failed controller, or corrosion and pushed-back pins in the connectors as possible causes, so all of these need to be checked.

Why does H2706 come and go instead of staying on?

An intermittent H2706 is usually caused by loose connections, corrosion, or pushed-back pins that only fault the circuit under certain conditions like vibration or moisture. If the code is not active during testing, the cause may not show up until you find and fix the loose or corroded connection.

How do I clear H2706 after I fix it?

Cycle the key power off and back on. No other reset procedure is listed for this code.

Which Bobcat models can show code H2706?

It applies across a range of Bobcat compact excavators and skid-steer/track loaders, including the E35, E45, S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, T770, and T870.