Common Police Radio Codes (Generalized):

CodeMeaning
Code 1Urgent – immediate response required, using lights and sirens.
Code 2Routine call – non-urgent, no lights or sirens required.
Code 3No assistance is required – the situation is under control.
Code 4The officer needs assistance – request for backup.
Code 5An ambulance is needed at the scene.
Code 6Fire department needed.