The alarm fault message is only associated with the ultra sonics system. So it's not indicating a lock, or a remote fob problem. It is the becm saying, that it is not happy with the signal coming back from the sensor. It could be a becm, but more likely to be the ultrasonics sensor or the wiring to the sensor. First step is remove the sensor from the b/c post, remove the cover and locate the 3 connector pins on the pcb. one pin is gnd, one is 12V (but only for about 1 min after ignition is switched off), don't need to try and superlock doors for this check. The third pin is the output signal to becm. Normally this signal is high and the sensor will indicate movement to the becm by pulling the signal low.