What is the legal test for correcting the jury's instructions in a personal injury case?

"The court is under a general obligation to 'clear up any instructional confusion expressed by the jury,' but '[w]here . . . the original instructions are themselves full and complete, the court has discretion . . . to determine what additional explanations are sufficient to satisfy the jury's request for information.' " (People v. Dykes (2009) 46 Cal.4th 731, 802.) "When the trial court responds to a question from a deliberating jury with a generally correct and pertinent statement of the law, a party who believes the court's response should be modified or clarified must make a contemporaneous request to that effect; failure to object to the trial court's wording or to request clarification results in forfeiture of the claim on appeal." (Ibid.)