you have a violation of the restraining order - as the law you cite reads
(4) Willful disobedience of the terms as written of any process or
court order or out-of-state court order, lawfully issued by any
court, including orders pending trial.
and 166 further reads
(b) (1) Any person who is guilty of contempt of court under
paragraph (4) of subdivision (a) by willfully contacting a victim by
phone or mail, or directly, and who has been previously convicted of
a violation of Section 646.9 shall be punished by imprisonment in a
county jail for not more than one year, by a fine of five thousand
dollars ($5,000), or by both that fine and imprisonment.
(c) (1) Notwithstanding paragraph (4) of subdivision (a), any
willful and knowing violation of any protective order or stay away
court order issued pursuant to Section 136.2, in a pending criminal
proceeding involving domestic violence, as defined in Section 13700,
or issued as a condition of probation after a conviction in a
criminal proceeding involving domestic violence, as defined in
Section 13700, or that is an order described in paragraph (3), shall
constitute contempt of court, a misdemeanor, punishable by
imprisonment in a county jail for not more than one year, by a fine
of not more than one thousand dollars ($1,000), or by both that
imprisonment and fine.
what you will need to do is know exactly when the violation is being alledged and try to show that it is impossible because you were not available at that time. you can file your appearance pro se and request that information for the DA or you can consult with an attorney in your area to represent you and they can get it through Discovery and work a defense based on what is stated