Bobcat M1707 (17-07) Fault Code: Hydraulic Lock Solenoid Open Circuit
Also shown on the panel as 17-07 · Also called Hydraulic Lock Valve Open Circuit
Hydraulic Lock Solenoid Open Circuit · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
Bobcat M1707, shown as 17-07 on the panel, means the gateway controller has detected an open circuit on the hydraulic lock valve solenoid, signal wire 4410, or return wire 2410. When this code sets, the lift and tilt functions are disabled until the fault is fixed and power is cycled.
High severity. M1707 disables lift and tilt function entirely, which stops productive work immediately. It is not an engine-damage emergency, but the machine cannot do its job until the open circuit is found and repaired.
What does Bobcat error code M1707 mean?
M1707 is Bobcat's code for an open circuit on the hydraulic lock valve solenoid circuit, covering the solenoid itself, signal wire 4410, and return wire 2410. The hydraulic lock valve solenoid is what locks and unlocks the lift and tilt hydraulic functions on the loader.
When the gateway controller sees this circuit open, it cannot confirm the solenoid is being commanded properly, so it disables lift and tilt as a protective measure. In practical terms, the loader arms will not raise, lower, or tilt until the issue is resolved.
This code appears the same way across all affected skid-steer and track loader models it applies to, and the diagnostic cause list is identical in every version of Bobcat's documentation for M1707.
Common causes of M1707
- Signal wire 4410 shorted to supply voltage or open
- Return wire 2410 open
- Failed hydraulic lock valve solenoid
- Failed or faulty gateway controller
- Moisture, corrosion, or pushed-back pins in the gateway controller connectors, hydraulic lock solenoid connector, or mainframe harness
- Intermittent fault not present at time of testing, which may stem from loose connections, corrosion, pushed-back pins, the controller, the wire harness, or a combination of these
How to troubleshoot Bobcat M1707: first checks
- With the key switch in run/enter, check for the code and note whether it is active or intermittent
- Inspect the hydraulic lock valve solenoid connector for moisture, corrosion, or pushed-back pins
- Trace signal wire 4410 for signs of chafing, shorts to supply voltage, or an open condition
- Trace return wire 2410 for continuity and check for an open condition
- Inspect the gateway controller connectors and the mainframe harness connectors for corrosion or damaged pins
- Test the hydraulic lock valve solenoid itself for proper operation if wiring checks out clean
- If the code is intermittent and not present during testing, recheck all connections and wiring since the fault may not be reproducible on demand
How the code clears
Once the wiring, solenoid, or controller issue is repaired, clear the code by cycling power on the machine (turn the key switch off, then back to run/enter). No separate reset procedure is listed for this code beyond cycling power.
Affected models and serial ranges
M1707 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 M1707 mean?
It means the gateway controller detected an open circuit on the hydraulic lock valve solenoid, on signal wire 4410, or on return wire 2410. This solenoid locks and unlocks the lift and tilt hydraulic functions.
Why won't my Bobcat lift or tilt when M1707 is active?
The gateway controller disables lift and tilt functions automatically whenever M1707 is set, since it can no longer confirm the hydraulic lock valve solenoid circuit is working correctly.
What is the panel number for M1707?
It displays as 17-07 on the numeric panel display.
How do I clear M1707 after repairs?
Cycle power on the machine by turning the key switch off and then back to run/enter. No other reset procedure is listed.
What if the M1707 code isn't active when I test the machine?
If the fault is intermittent, the cause may not show up during testing. Suspect loose connections, corrosion, pushed-back pins, the controller, or the wire harness, and inspect all of these carefully even if nothing looks obviously wrong.
Which Bobcat models can show code M1707?
It applies to the S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, and T770 models, among others using the same gateway controller architecture.
Can corrosion alone cause M1707?
Yes. Moisture, corrosion, or pushed-back pins in the gateway controller connectors, the hydraulic lock solenoid connector, or the mainframe harness are all listed as possible causes of this open circuit code.