What Does Police Radio Code 43 Mean?

Written by Neil Norris

Clear, quick communication is vital in law enforcement. Police radio codes, sometimes known as “ten codes” or “signal codes,” help officers and dispatchers share critical information efficiently. Many people outside this field hear police codes on TV shows or police scanners and wonder what they really mean. Code 43 is one such code that often sparks curiosity.

This post explores the meaning of Code 43 in police radio communication, its context, and how it fits into the world of law enforcement lingo. By the end of this article, you’ll understand Code 43 and pick up some extra insight into why and how police codes are used.

Understanding Police Radio Codes

What Are Police Radio Codes?

Police radio codes are shorthand communication tools used on the radio—to quickly alert or inform other officers and dispatchers about various situations. By using a number or short phrase, officers can convey a lot of information without lengthy explanations or risking miscommunication.

Most people are familiar with popular codes from television, such as “10-4” (acknowledgment) or “10-20” (location), but the range of codes goes much further. Some codes are standardized across large regions or even the country; others can be unique to specific states or departments.

Why Do Police Use Radio Codes?

There are several reasons radio codes are preferred:

  • Speed: Rapid communication can save lives in emergencies.
  • Clarity: Codes reduce the risk of misunderstanding, especially when radio transmissions aren’t always crystal clear.
  • Security: Using codes makes it harder for civilians or potential suspects to immediately understand what’s happening if they are listening in.

Codes are typically designed to be as intuitive and memorable as possible while still providing a layer of discretion and privacy.

Decoding “Code 43”: What Does It Mean?

The Definition of Code 43

“Code 43” most commonly refers to a report of a wanted or stolen vehicle. It’s dispatched when police are made aware of a vehicle that is either reported missing, believed to be stolen, or is associated with a wanted person.

Typical Radio Usage

You might hear over a scanner or in a patrol car conversation:

“Dispatch, this is Unit 7. I have a Code 43 on a blue Toyota sedan, license plate ending 419.”

This means the officer has identified or is seeking a vehicle associated with a crime or an alert.

Note: Law enforcement codes can vary by jurisdiction. While Code 43’s association with a stolen or wanted vehicle is common, always check local or regional sources for precise definitions.

Context Matters

  • Stolen Vehicle: If someone calls to report their car stolen, an officer or dispatcher might reference Code 43 to initiate a search.
  • Wanted Vehicle: Code 43 could mean the car in question is wanted in relation to a crime (such as being seen leaving the scene).
  • Associated Person: Sometimes the code flags not just the vehicle, but also alerts officers about the potential for dangerous individuals involved.

How Do Officers Respond to a Code 43?

Immediate Steps

  1. Verification: Officers confirm the vehicle’s description and run its details through the database.
  2. Caution: If the vehicle is associated with a violent crime, officers approach the situation with heightened alertness.
  3. Coordination: Multiple units may collaborate to intercept or follow the wanted vehicle, updating dispatch with locations and observations.
  4. Recovery or Detainment: If the vehicle is found, police may attempt to recover the stolen property and, if applicable, detain any suspects present.

Example Scenarios

1. Traffic Stops

  • An officer pulls over a vehicle matching a Code 43 broadcast. Before approaching, the officer calls for backup and checks the registration in the system.

2. Surveillance

  • Unmarked vehicles may be used to quietly follow a Code 43 vehicle to gather intelligence about its location or the suspects’ movements.

3. Communications with Other Agencies

  • Code 43 information may be shared across neighboring police departments or even state lines to widen the search.

The Broader Role of Police Codes

Variations by Region

While Code 43 typically refers to wanted or stolen vehicles, radio codes change across jurisdictions:

  • Some departments use the same code for different events.
  • Others have abandoned coded communication altogether, opting for “plain talk” to avoid confusion—especially when agencies work together.

Other Commonly Used Police Codes

  • 10-4 – Acknowledgment or “Message Received”
  • 10-20 – Location
  • Code 3 – Emergency, use lights and sirens
  • Code 6 – Stay clear, stakeout in progress

Learning these can give you a better grasp of what you hear on police scanners.

Why Public Understanding of Codes Matters

You don’t need to memorize every code to follow a scanner or understand police TV radio chatter. Still, a basic understanding aids:

  • True crime hobbyists who listen for context
  • Journalists reporting live events
  • Citizens monitoring local emergencies

If you’re driving and an officer is searching for a reported “Code 43” vehicle, knowing it refers to a stolen or wanted vehicle can keep you aware of why police activity is heightened in your area.

Staying Up-to-Date

Because codes can differ by city, county, or agency, always reference the latest local law enforcement documentation if you need a precise or actionable definition. Many departments publish guides for public transparency.

Further Resources and Next Steps

Want to learn more about police communication?

  • Check your local police department’s website for a list of radio codes they use.
  • Tune into live police scanners (where local regulations permit).
  • Explore resources like the APCO (Association of Public-Safety Communications Officials) for insights into nationwide standards.

Understanding codes like 43 helps you stay informed and engaged with what’s happening in your community.

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