Does a trial court erred by failing to instruct on a defense?

Does the trial court erred by instructing the jury on self-defense and by declining to give the jury instructions on the lesser related charge of being an accessory after the fact? (California, United States of America)

Does the trial court erred by failing to instruct on a defense? (California, United States of America)

Does trial counsel shirk his constitutional responsibility to provide competent counsel by failing to ask the court to instruct on a bogus self-defense defense? (California, United States of America)

Does a defendant have grounds to argue that the trial court erred in failing to instruct the jury on the defenses of duress and necessity and the lesser included offenses of first degree murder? (California, United States of America)

Does the trial court erred in failing to instruct the jury on a diminished capacity defense in the context of involuntary manslaughter? (California, United States of America)

Does a defendant have any grounds to argue that the trial court erred in failing to give the cautionary instruction at the end of trial? (California, United States of America)

How have courts treated a defendant's claim that the trial court erred by refusing to instruct on the elements of rape and sodomy generally? (California, United States of America)

When will a trial court instruct the jury on the defense of unconsciousness and self-defense in a case of involuntary manslaughter? (California, United States of America)

Is a defendant's contention that the trial court erred in denying defense counsel's request for an instruction identifying mitigating factors? (California, United States of America)

Does a defendant have grounds to argue that a trial court prejudicially errs in failing to instruct the jury sua sponte at the penalty phase to disregard the no-sympathy instruction at the guilt phase? (California, United States of America)