DRV2625: Auto-calibration for ERM failing. What could be the reasons?

I am getting an error when running the auto-calibration routine with this ERM:

https://www.vybronics.com/erm-cylindrical-vibration-motors/v-z30l4b8790008l

The DRV2625 is powered by a 3V power rail, obtained from the LDO on a BQ25120A.

This is a snippet of the code I'm running on initialization. It uses a driver I found for the BOOSTXL-DRV2625 on this thread: e2e.ti.com/.../where-is-boostxl-drv2625-demo-code

	// configure the trigger pin so we can use the GO function (over I2C)
	DRV262x_setTrigPin(DRV262x_trigPin_interrupt);

	// read status flags just to clear them
	DRV262x_getReg(DRV262x_reg_status, &(statusReg.r));

	// configure actuator and trigger auto-calibration
	DRV262x_setMode(DRV262x_mode_autocal);

	// set driver in ERM, open-loop mode
	DRV262x_Ctrl2Reg_t ctrl2Reg;
	DRV262x_getReg(DRV262x_reg_ctrl2, &(ctrl2Reg.r));
	//ctrl2Reg.b.bOLnCL = 1; // calibrate in open-loop
	ctrl2Reg.b.bLRAnERM = DRV262x_actuator_ERM;
	DRV262x_setReg(DRV262x_reg_ctrl2, ctrl2Reg.r);

	DRV262x_Ctrl6Reg_t ctrl6Reg;
	DRV262x_getReg(DRV262x_reg_ctrl6, &(ctrl6Reg.r));
	ctrl6Reg.b.bAutoCalTime = 2; // set auto-cal time to 1s
	DRV262x_setReg(DRV262x_reg_ctrl6, ctrl6Reg.r);
	DRV262x_RatedVoltageReg_t ratedVoltage;
	DRV262x_OverdriveVoltageReg_t overdriveClampVoltage;
	ratedVoltage.r = 0x89;//0x80, // 2.8V
	overdriveClampVoltage.r = 0xBC;//0x8B, // 3V
	DRV262x_setReg(DRV262x_reg_ratedVoltage, ratedVoltage.r);
	DRV262x_setReg(DRV262x_reg_overdriveVoltage, overdriveClampVoltage.r);
	DRV262x_blockUntilGoIsCleared();
	DRV262x_go();
	DRV262x_blockUntilGoIsCleared();
	// read status flags to check auto-calibration result
	DRV262x_getReg(DRV262x_reg_status, &(statusReg.r));
	LOG_INF("status: %x", statusReg.r);
	if (statusReg.b.bDiagResult)
	//DRV262x_loadActuatorConfig(&DRV262x_actuator_VZ30L4B8790008L);
	//if (DRV262x_runAutoCalibration())
	{
		// auto-calibration failed
		LOG_ERR("haptic driver auto-calibration failed");

The procedure always ends with the flag DIAG_RESULT set.

What steps can I take to understand what exactly is the problem? Is it a compatibility issue with the actuator I'm using? I tested the board for shorts and it'd fine. The actuator actually spins and vibrates as expected.

Thank you,

Rafael