41-1 relates to 8v sensor power, which obviously includes sensors in the power train. Are you sure it is -1 because that is a somewhat strange one. It signifies "Low", in other words an input that is still functioning in the valid range but sending a signal below the acceptable limit of the parameter. Can you double check and/or post a photo of the Diagnostic Code as it appears on the Monitor panel please.
E192 is a steering system malfunction, probably related to the electro-hydraulic actuator for the steering valve. Click this
LINK where the subjectof that actuator was discussed in detail, including a couple of tips on freeing up a stuck actuator (Post #37 on Page 2). There is also another
THREAD linked within the previous one that it may also pay you to study.
You're probably going to need an electrical schematic. I'll send you one.