Bobcat W3276 (32-76) Fault Code: CAN Joystick Information Error
Also shown on the panel as 32-76 · Also called ACS (AHC) CAN Joystick Information Error
CAN Joystick Information Error · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
W3276 (panel code 32-76) sets when the ACS controller detects an error with one of the CAN joysticks. When it's active, lift and tilt functions are disabled until the fault is resolved.
High severity. Lift and tilt are disabled while this code is active, which stops normal loader work immediately. It is not an engine-damage risk, but it is an operational stoppage that needs prompt diagnosis.
What does Bobcat error code W3276 mean?
W3276 means the Advanced Control System (ACS), also called AHC on some machines, has detected a communication or signal error involving the joystick controls. The joysticks send commands over a CAN network to the ACS controller, which then controls hydraulic lift and tilt functions.
Which joystick is implicated depends on the control pattern selected. If the loader is in ISO mode, the error points to the right joystick base. If it's in H-pattern mode, the error could come from either the right or the left joystick base.
Because lift and tilt are disabled whenever this code is active, the machine cannot be used for loader work until the fault clears. This code may also appear alongside other CAN joystick codes, which can help narrow down the failing component.
Common causes of W3276
- Disconnected joystick
- CAN wire 91xx/95xx or 92xx/96xx shorted to ground or open
- Supply wire 1830 or 1840 shorted to ground or open
- Ground wire 2070 or 2080 open
- Two left joysticks installed (duplicate address conflict)
- Two right joysticks installed (duplicate address conflict)
- Faulty left or right CAN joystick base
- Faulty left or right joystick grip
- Faulty ACS controller
- Moisture, corrosion, or pushed-back pins in the ACS controller connectors, joystick connectors, mainframe harness, or SJC harness
- Intermittent fault not present at time of testing: possible causes include loose connections, corrosion, pushed-back pins, the controller, the wire harness, or a combination of these
How to troubleshoot Bobcat W3276: first checks
- Confirm the key switch is on (run/enter) and that PTOL is enabled, since these are required conditions for the code to be set or read.
- Check that both joysticks are properly connected and that no joystick has been swapped to the wrong side (watch for two left or two right joysticks installed by mistake).
- Inspect the CAN wires (91xx/95xx or 92xx/96xx) for shorts to ground or open circuits.
- Inspect supply wires 1830 and 1840, and ground wires 2070 and 2080, for opens or shorts to ground.
- Open up the ACS controller connectors, joystick connectors, mainframe harness, and SJC harness connectors and look for moisture, corrosion, or pushed-back pins.
- If the code is intermittent and not active during testing, recheck all connections for looseness or corrosion since the root cause may not show up on a single inspection.
How the code clears
PTOL must be enabled to clear the code once the repair is complete. No separate clearing step is listed beyond this condition.
Affected models and serial ranges
W3276 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 W3276 mean on a Bobcat loader?
It means the ACS (or AHC) controller has detected an error with one of the CAN joysticks. Depending on whether the machine is in ISO or H-pattern mode, the fault points to the right joystick base or possibly either joystick base.
Can I still drive or operate the loader with W3276 active?
Lift and tilt functions are disabled when this code is active, so normal loader work is not possible until the fault is diagnosed and cleared.
Why would two joysticks cause this code?
If two left joysticks or two right joysticks end up installed on the machine, this creates a conflict on the CAN network that the ACS controller reads as a joystick information error.
The code only shows up sometimes. Why can't the shop find it?
This code can be intermittent. If it's not active at the time of testing, the root cause may not be found right away. Likely culprits in these cases are loose connections, corrosion, pushed-back pins, the controller itself, or the wire harness, or some combination of these.
What is PTOL and why does it matter for this code?
PTOL enabled is listed as a required condition both for the code to be set and for it to be cleared once repairs are complete. Along with the key switch being in run/enter, it's part of the operating state the controller checks.
Which Bobcat models can get code W3276?
This code applies to the S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, T770, and T870 models.
Should I check connectors before replacing parts?
Yes. Moisture, corrosion, or pushed-back pins in the ACS controller connectors, joystick connectors, mainframe harness, or SJC harness are listed as possible causes, and these are worth ruling out before replacing a joystick base, grip, or the ACS controller itself.