No, just the stepper motor is erroring. Coil #2 has nothing to do with it. Parsed correctly, it should read "Stepper motor number two malfunction". They just call it a coil because the error is set up for coils, but covers motors as well. It just says "[part that failed] coil malfunction". That being said, it may in fact be your relay, which has a coil, that is malfunctioning. You need to run a test of the stepper motor in test mode.