Bobcat D7572 (75-72) Fault Code: Drive Pump - Not Calibrated
Also shown on the panel as 75-72 · Also called Drive Pump Not Calibrated, Drive Pump – Not Calibrated
Drive Pump - Not Calibrated · ai-assisted, editor-reviewed · Last updated 2026-07-13
TL;DR
D7572 (panel code 75-72) means the drive/drive plus controller on your Bobcat loader is uncalibrated, failed a calibration, or received corrupted or wrong software during an update. It sets whenever the key switch is in run/enter with the controller in this uncalibrated state, and it can affect drive performance across S-series and T-series machines.
Medium severity. D7572 does not by itself indicate a mechanical failure, but an uncalibrated drive controller can cause unpredictable or degraded drive behavior. Treat it as a stop-and-diagnose issue before returning the machine to normal work, especially if drive response feels off.
What does Bobcat error code D7572 mean?
D7572 is set by the drive/drive plus controller, the module that manages the hydrostatic drive pump and related sensors on Bobcat loaders. This code specifically flags a calibration problem: the controller either has never been calibrated, failed a calibration attempt, or has corrupted or incorrect software loaded into it.
This is different from a wiring or sensor failure code. It's a software/configuration state code that tells you the controller doesn't have valid calibration data it needs to correctly control the drive pump. That said, several hardware issues (sensors, solenoids, connectors, contamination) can contribute to calibration failures or mimic the same symptom.
Because the drive/drive plus controller governs how the hydrostatic drive pump responds to operator input, an uncalibrated controller can produce inconsistent travel response, jerky operation, or reduced drivability until the calibration is completed successfully.
Common causes of D7572
- Drive/drive plus controller needs calibration
- Engine speed sensor problem
- Wheel speed sensor problem
- Swash plate sensor problem
- Drive pump solenoid problem
- Contamination in the hydraulic system
- Fault in the drive/drive plus controller itself
- Power or communication loss during a software update to the controller
- Wrong software downloaded into the drive/drive plus controller
- Moisture, corrosion, or pushed-back pins in the drive/drive plus controller connectors or AWS/SJC harness connectors
- Intermittent condition where the cause cannot be pinned down at the time of testing, possibly from loose connections, corrosion, pushed-back pins, the controller, the wire harness, or a combination of these
How to troubleshoot Bobcat D7572: first checks
- Confirm the key switch is in run/enter, since this is the condition under which the code is set, and note whether the code is active now or stored as history
- Check whether a drive controller calibration procedure needs to be run or re-run, especially after any controller replacement or software update
- Inspect the drive/drive plus controller connectors and the AWS/SJC harness connectors for moisture, corrosion, or pins that have been pushed back out of their sockets
- Verify the correct software version is loaded in the drive/drive plus controller and that no update was interrupted partway through
- Inspect engine speed sensor, wheel speed sensors, and swash plate sensor wiring and connections for damage or looseness
- Check drive pump solenoids for proper operation and check the hydraulic system for signs of contamination
- If the code is intermittent and not currently active, recheck all connections, wiring, and pins since the cause may not be identifiable in a single test session
How the code clears
No separate clearing step is listed for this code. Since the underlying cause is a calibration state, the practical path is to correctly calibrate the drive/drive plus controller with the proper procedure and software, repair any wiring, connector, or sensor issues found, and confirm the code does not return with the key switch on.
Affected models and serial ranges
D7572 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 D7572 mean?
It means the drive/drive plus controller on the machine is not calibrated, failed a calibration attempt, or has corrupted or incorrect software. The panel may show it as 75-72.
Can I keep operating the machine with D7572 active?
It's not advisable. An uncalibrated drive controller can cause inconsistent or unpredictable drive behavior. Diagnose and correct it before relying on the machine for normal work.
Does D7572 always mean I need a new controller?
No. Many cases are resolved by running or re-running the calibration procedure, correcting a bad software update, or repairing a connector or sensor issue. Replacing the controller is only one of several possible causes.
Why did this code appear after a software update?
If power or communication was lost during the update, the controller's information can become corrupted, or the wrong software may have been loaded. Both conditions are listed causes of D7572.
What if the code shows up intermittently and I can't find a cause?
That's a recognized possibility with this code. Probable causes for intermittent D7572 include loose connections, corrosion, pushed-back pins, the controller itself, or the wire harness, sometimes in combination. Careful rechecking of all connectors is the best approach.
Is there a specific reset procedure for D7572?
No reset procedure is listed for this code. Clearing it depends on correctly calibrating the controller and fixing any wiring, connector, or sensor problems found during diagnosis.
Which Bobcat models can show D7572?
It applies across S510, S530, S550, S570, S590, S630, S650, S750, S770, T550, T590, T630, T650, T750, and T770, T870 loaders equipped with a drive/drive plus controller.