Bobcat A8132 (81-32) Fault Code: ACD/RACD Output “B” Over Current
Also shown on the panel as 81-32 · Also called ACD Output ‘B’ Overcurrent
ACD/RACD Output “B” Over Current · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
Bobcat fault code A8132 (panel display 81-32) sets when the ACD/RACD controller senses too much current flowing through the Output "B" solenoid circuit, return wire, controller pin J1 A-10. The controller shuts off Output "B" to protect itself. It shows up with the key switch or run/enter switch on.
Medium severity. The controller disables Output "B" to protect its driver, so whatever attachment function relies on that output will stop working. It is not an immediate engine or machine safety emergency, but you should not keep operating the affected attachment function until the short or bad solenoid is found and fixed.
What does Bobcat error code A8132 mean?
A8132 is set by the attachment control device (ACD) or remote attachment control device (RACD) controller on a range of Bobcat skid steers, track loaders, and excavators. This controller runs the electrical outputs that operate attachment solenoids, and Output "B" is one of those solenoid drive circuits.
When the controller detects that the current flowing through the Output "B" solenoid, its return wire, and controller pin J1 A-10 is higher than the output driver can safely handle, it trips a protective shutdown and disables Output "B" entirely. This is a self-protection feature: continuing to drive an overcurrent condition would damage the internal driver circuit in the controller.
In plain terms, something on the Output "B" side of the attachment wiring is pulling more current than it should, usually because of a short circuit, a failed solenoid, or a wiring/connector problem that lets voltage or current cross paths it shouldn't.
Common causes of A8132
- Return wire at controller pin J1 A-10 shorted to supply voltage, or shorted to Output "B" at controller pin J1 B-7.
- A failed Output "B" solenoid drawing excess current.
- A fault inside the ACD/RACD controller itself.
- Moisture, corrosion, or pushed-back pins in the ACD/RACD controller connectors, mainframe harness, attachment control harness, or at the Output "B" solenoid connector.
- An intermittent fault that is not present at the time of testing. In this case, the cause may not be identifiable right away. Probable underlying causes for intermittent codes include loose connections, corrosion, pushed-back pins, the controller itself, the wire harness, or some combination of these problems.
How to troubleshoot Bobcat A8132: first checks
- With the key switch or run/enter switch on, check for the active code and confirm which Output "B" solenoid or attachment circuit is affected on your model.
- Inspect the ACD/RACD controller connectors, the mainframe harness, and the attachment control harness for moisture, corrosion, or pushed-back pins, especially around controller pin J1 A-10 and pin J1 B-7.
- Check the Output "B" solenoid itself for signs of internal failure and check its wiring for chafing, pinches, or exposed wire that could cause a short to supply voltage or to the Output "B" line.
- Trace the return wire from J1 A-10 for any point where it could be shorted against the Output "B" wire at J1 B-7 or against a supply voltage wire.
- If no fault is found and the code was intermittent, wiggle-test the harness and connectors while watching for the code to reset, since a loose connection or pushed-back pin may only fault under vibration or movement.
- If wiring and the solenoid check out, suspect the ACD/RACD controller itself as the source of the overcurrent detection fault.
How the code clears
Once the wiring, solenoid, or controller issue has been repaired, the code is cleared by cycling power to the machine. No separate clearing procedure or reset sequence is listed beyond cycling power.
Affected models and serial ranges
A8132 appears in our records across 20 Bobcat models. Match your machine by model and serial number.
| Model | Serial ranges |
|---|---|
| E35 | SN A93K110001-99999, SN AC2P11001-99999 |
| E42 | SN AG3411001-99999 |
| E45 | SN AG3G11001-99999, SN AHHC11001-99999 |
| E55 | SN ARWM11001-99999, SN ASW311001-99999 |
| 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 A3NT10001-12369, 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 |
Frequently asked questions
What does Bobcat code A8132 mean?
It means the ACD/RACD attachment controller detected too much current flowing through the Output "B" solenoid circuit, at the return wire and controller pin J1 A-10, and shut that output off to protect itself.
What is the panel display number for A8132?
On the panel it displays as 81-32.
Will my attachment still work with code A8132 active?
No, whatever attachment function is wired to Output "B" will stop functioning because the controller disables that output when it detects the overcurrent condition.
What usually causes A8132?
The most common causes are a short between the return wire at pin J1 A-10 and either supply voltage or the Output "B" wire at pin J1 B-7, a failed Output "B" solenoid, corrosion or damaged pins in the connectors and harness, or a fault in the ACD/RACD controller itself.
How do I clear code A8132 after I fix it?
Cycle power to the machine. That is the only clearing step listed for this code.
Which Bobcat machines can show code A8132?
It applies to a wide range of models including the E35, E42, E45, E55 excavators, S510, S530, S550, S570, S590, S630, S650, S750, S770 skid steers, and T550, T590, T630, T650, T750, T770, T870 track loaders.
The code comes and goes, does that matter?
Yes. If the code is intermittent and not active during testing, the exact cause may not be found right away. In that case check for loose connections, corrosion, and pushed-back pins in the harness and controller connectors, since these are the most likely culprits for an intermittent overcurrent fault.