PROB §4541: A petition may be filed under this part for any one or more of the following purposes: (a) Determining whether the power of attorney is in effect or has terminated.

A petition may be filed under this part for any one or more of the following purposes: (a) Determining whether the power of attorney is in effect or has terminated. (b) Passing on the acts or proposed acts of the attorney-in-fact, including approval of authority to disobey the principal’s instructions pursuant to subdivision (b) of Section 4234. (c) Compelling the attorney-in-fact to submit the attorney-in-fact’s accounts or report the attorney-in-fact’s acts as attorney-in-fact to the principal, the spouse of the principal, the conservator of the person or the estate of the principal, or to any other person required by the court in its discretion, if the attorney-in-fact has failed to submit an accounting or report within 60 days after written request from the person filing the petition. (d) Declaring that the authority of the attorney-in-fact is revoked on a determination by the court of all of the following: (1) The attorney-in-fact has violated or is unfit to perform the fiduciary duties under the power of attorney. (2) At the time of the determination by the court, the principal lacks the capacity to give or to revoke a power of attorney. (3) The revocation of the attorney-in-fact’s authority is in the best interest of the principal or the principal’s estate. (e) Approving the resignation of the attorney-in-fact: (1) If the attorney-in-fact is subject to a duty to act under Section 4230, the court may approve the resignation, subject to any orders the court determines are necessary to protect the principal’s interests. (2) If the attorney-in-fact is not subject to a duty to act under Section 4230, the court shall approve the resignation, subject to the court’s discretion to require the attorney-in-fact to give notice to other interested persons. (f) Compelling a third person to honor the authority of an attorney-in-fact.