What can I expect if I didn't complete a judge's request and skipped my court date?

It will depend on the mood the judge is in when you go back to court and the excuse you give the judge for not completing your Caltrans and missing your court date. The judge can sentence you to 30 days in jail. However, it is better to go to court on your own before you are arrested and brought before the judge by the police.

This entirely depends on the judge but, if you have not completed ANY Caltrans, you may be going to jail.

You will at least have to do the 20 days, some judges will make you do the time in custody, others will give a longer sentence. If you do jail time you will probably do just half the number of days unless this is an older case.

What can I expect? A warrant, arrest, jail time. You already have the warrant. To handle a warrant, you must turn yourself in to the issuing court, with or without an attorney. You?ll try to negotiate a recall of the warrant's and negotiate a plea bargain on the "Failure to Appear" charge. You'll try to negotiate bail reduction or release. You'll try to negotiate a new plea bargain on the outstanding sentence. On misdemeanors and infractions, your attorney can appear in court without the defendant being present. Effective plea-bargaining, using whatever legal defenses, facts and sympathies there may be, could possibly keep you out of jail/prison, or at least dramatically reduce it, and may enable you to get your probation and programs reinstated. Unless you're competent to effectively represent yourself in court against a professional prosecutor trying to put you in jail, most people hire an attorney who can.

It's better to save the money to hire a lawyer, who can appear without you to recall the warrant. If you're not there, the Judge can't take you in!

You're in danger of being arrested and sent to jail. Get a lawyer IMMEDIATELY.