What are the consequences of a defendant's failure to comply with the terms of a plea bargain?

"`While no bargain or agreement can divest the court of the sentencing discretion it inherently possesses [citation], a judge who has accepted a plea bargain is bound to impose a sentence within the limits of that bargain. [Citation.] "A plea agreement is, in essence, a contract between the defendant and the prosecutor to which the court consents to be bound." [Citations.] Should the court consider the plea bargain to be unacceptable, its remedy is to reject it, not to violate it, directly or indirectly. [Citation.] Once the court has accepted the terms of the negotiated plea, "[it] lacks jurisdiction to alter the terms of a plea bargain so that it becomes more favorable to a defendant unless, of course, the parties agree." [Citation.]' [Citation.]" (People v. Cunningham (1996) 49 Cal.App.4th 1044, 1047.)

The harmless error standard of review "is inapplicable to a situation involving failure to fulfill the terms of a plea bargain. Defendant's entitlement to the benefit of his bargain cannot be predicated on the assumption that violation of the bargain must result in some measurable detriment. Because a court can only speculate why a defendant would negotiate for a particular term of a bargain, implementation should not be contingent on others' assessment of the value of the term to defendant." (People v. Mancheno (1982) 32 Cal.3d 855, 865.)