That makes sense. I'll live with it for now and might upgrade the stepper if it becomes an issue later.

Thank you for your help!

The motor in question is a Kysan 1124090
Specifications:

• Holding Torque: 5.5Kg.cm
• Rated Voltage: 4.2V
• NO.of Phase: 2
• Step Angle: 1.8° ± 5%
• Resistance Per Phase: 2.8Ω± 10%
• Inductance Per Phase: 4.8mH± 20%
• Current Per Phase: 1.5A
• Shaft: 5mm diameter w/ one flat
• Insulation Class: Class B
• Dielectric Strength: 100Mohm
• Operation Temp Range: -20 ~ +40° C
• Lead Wire: 22AWG / 750mm
• 4 pin 2.54mm connector

That is what I thought as well, but I tried with a motor that came pre-crimped and had the same issue.

I plugged the motor into the E1 port and now get the Phase A and B might be disconnected on both Extrude and Retract at 30mm/s. Still no warning at 15mm/s.

Warning: motor phase A may be disconnected reported by driver(s) 4
Warning: motor phase B may be disconnected reported by driver(s) 4

I also tried a new stepper that I didn't wire myself and am getting the same errors.

I'm getting a weird warning with my extruder stepper. I'm running it with the Zesty Nimble.

At Below 15mm/s I get no errors.

At 30mm/s and above:
When I Extrude:

Warning: motor phase B may be disconnected reported by driver(s) 3

When I Retract:

Warning: motor phase A may be disconnected reported by driver(s) 3
Warning: motor phase B may be disconnected reported by driver(s) 3

Board: Duet WiFi 1.02 or later
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.0 (2020-01-03b3)
Duet WiFi Server Version: 1.23

Extruder Motor Current (mA): 500
Steps per mm: 2700
Max. Speed Change (mm/s): 20
Max. Speed (mm/s): 20
Acceleration (mm/s²): 120

I've rewired the extruder motor and still getting the same error.
Any help would be appreciated.

Thank you!