Jumping bail, or failure to appear (FTA), triggers immediate consequences. A bench warrant is issued for your arrest.
Your bail is forfeited, making the bail bondsman responsible for the full bail amount—which they'll then seek from you or your co-signer.
Failure to appear is itself a crime in California, adding to your legal troubles.
Bail recovery agents (bounty hunters) may be employed to locate and return you to custody.
Future bail will be much more difficult and expensive to obtain. Courts view FTA very seriously.