Bobcat D7585 (75-85) Fault Code: 5.0 Volt Sensor Supply 1 Out of Range High
Also shown on the panel as 75-85 · Also called 5.0 Volt Sensor Supply 1 Out Of Range High, Drive 5 Volt Sensor Supply 1 Out of Range High
5.0 Volt Sensor Supply 1 Out of Range High · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
D7585 sets when the drive plus controller sees the 5 volt sensor supply 1 circuit above 5.25 volts. This supply feeds the left and right wheel speed sensors and the left joystick, so when it goes out of range the controller disables drive functions until the fault clears.
High severity. Drive functions are disabled while this code is active, which means the machine can lose propulsion control. It is not an immediate engine or fire risk, but it stops the machine from being usable and should be treated as a stop-and-diagnose issue rather than something to run through a shift.
What does Bobcat error code D7585 mean?
D7585 is a Bobcat drive plus controller fault meaning the 5 volt sensor supply 1 circuit is reading too high, specifically above 5.25 volts. This 5 volt supply is not just for one sensor: it powers the left and right wheel speed sensors and the left joystick, so a problem here can affect several inputs at once.
Because this supply is shared across multiple drive-related sensors, Bobcat disables drive functions entirely when D7585 is active. This is a protective measure, since the controller can no longer trust the speed and joystick signals riding on that 5 volt rail.
The code is self resetting, meaning once the overvoltage condition on the supply circuit goes away, the code clears on its own. However, self resetting does not mean the underlying wiring or connector problem is fixed. It just means the controller will stop flagging the fault once voltage is back in range.
What triggers a Bobcat D7585 code?
The controller sets D7585 when the 5 volt sensor supply 1 voltage is measured above 5.25 volts while the key switch is in the run/enter position (key switch on).
Common causes of D7585
- 5 volt supply wire (identified in different harness variants as wire 5980 or wire 1640) shorted to a higher supply voltage source.
- Drive controller fault or internal failure in the drive plus controller itself.
- Moisture, corrosion, or pushed-back pins in the drive/drive plus controller connector, wheel speed sensor connectors, left joystick connectors, swash plate sensor connectors, or the AWS/SJC wiring harness.
- Intermittent condition: if the code is not active at the time of testing, the root cause may not be identifiable right away. Likely contributors in these cases include loose connections, corrosion, pushed-back pins, the controller, the wire harness, or some combination of these.
How to troubleshoot Bobcat D7585: first checks
- With the key switch on, check for any additional related codes that may have set at the same time, including D3904, D7557, D7560, D7561, or D7564, since these can help narrow down which part of the circuit is affected.
- Inspect the drive/drive plus controller connector, wheel speed sensor connectors (left and right), left joystick connector, and swash plate sensor connectors for moisture, corrosion, or pins that have been pushed back out of their sockets.
- Check the AWS/SJC wiring harness along its length for chafing, pinched sections, or a short to another supply voltage, since the 5 volt supply wire (5980 or 1640 depending on harness variant) shorting to supply voltage is a listed cause.
- Test the 5 volt sensor supply 1 voltage directly at the controller connector and at the sensor connectors to see if it reads above 5.25 volts, and note whether the reading is steady or intermittent.
- If the fault does not appear active during testing, wiggle-test connectors and harness runs while monitoring the supply voltage, since intermittent faults from loose connections or corrosion may not show up during a static check.
How the code clears
This code is self resetting. Once the 5 volt sensor supply 1 voltage returns to within the acceptable range, the controller clears the code on its own and restores drive functions. No separate manual clearing step is listed, but the underlying wiring, connector, or controller problem still needs to be repaired or it will likely reoccur.
Affected models and serial ranges
D7585 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 |
| 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 D7585 mean?
It means the drive plus controller detected the 5 volt sensor supply 1 circuit reading above 5.25 volts. That supply powers the left and right wheel speed sensors and the left joystick, so the controller disables drive functions as a protective response.
Why did my Bobcat lose drive function with code D7585?
Drive functions are intentionally disabled whenever D7585 is active because the controller can no longer trust the wheel speed sensor and left joystick signals that share the affected 5 volt supply circuit.
Do I need to manually clear code D7585?
No. The code is self resetting, meaning it clears automatically once the supply voltage returns to normal. However, the wiring, connector, or controller issue that caused the overvoltage still needs to be fixed.
What other codes might appear with D7585?
Bobcat notes that codes D3904, D7557, D7560, D7561, or D7564 may also be generated at the same time, since they can share circuits or components with the 5 volt sensor supply 1 system.
Which Bobcat models can show code D7585?
This code applies to S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, T770, and T870 models.
What if the code isn't active when I check it?
If D7585 is intermittent and not present during testing, the exact cause may not be identifiable right away. Likely culprits include loose connections, corrosion, pushed-back pins, the controller itself, the wire harness, or a combination of these.
Is D7585 caused by a bad sensor or a bad controller?
It can be either, or the wiring between them. Listed causes include a supply wire shorted to a higher voltage, a drive controller fault, or moisture/corrosion/pushed-back pins in any of the connectors on the shared 5 volt supply circuit.