Unlocking the Secrets of Fallout 4's Vaults
Welcome, Wastelanders! If you're diving into the post-apocalyptic world of Fallout 4, you've likely encountered those imposing, retro-futuristic Vault-Tec structures. But the real challenge isn't just finding them; it's getting inside. Many of these vaults are sealed, requiring specific codes to open their heavy metal doors and reveal the treasures (or horrors) within. This guide is dedicated to helping you pinpoint the locations of those elusive three vault codes you're probably hunting for.
The Importance of Vault Codes in Fallout 4
Vault codes are your golden tickets to the underground shelters that dot the Commonwealth. Inside, you'll often find valuable loot, unique crafting materials, advanced technology, and sometimes, crucial quest items. Some vaults are even central to major storylines. Without the correct codes, these essential locations remain inaccessible, hindering your progress and limiting your exploration.
Where to Find the Three Key Vault Codes
While there are many vaults scattered across the map, the phrase "the three vault codes" most commonly refers to the codes for Vault 81, Vault 95, and Vault 75. These are significant locations with unique challenges and rewards. Let's break down how to get each of them.
Vault 81 Codes
Vault 81 is a vibrant, functioning community with its own set of internal politics and secrets. The codes you'll need for Vault 81 are actually for its internal security systems, not to get inside the main entrance, which you can join as a resident. However, there are critical codes needed to access specific, hidden areas within.
The "Curtain" Quest Line
The primary method of acquiring key codes related to Vault 81 involves progressing through the questline for "The Curtain." This quest begins when you enter Vault 81 and speak with the Overseer. You'll be tasked with assisting the resident doctor, Dr. Forsythe, with a critical medical emergency.
During this quest, you will be guided to a hidden laboratory area within Vault 81. Here, you will need to retrieve a specific item. The codes are not found as a single entry but are often pieces of information that unlock access to different sections.
Specifically, you'll be looking for codes to access the "Black Lung" lab. These are usually found on terminals or notes within the hidden sections of Vault 81. One crucial terminal you'll interact with will reveal information that leads to the extraction of the "Overseer's Terminal Password," which unlocks critical areas.
Keep an eye out for:
- Terminals within the hidden lab area.
- Notes or holotapes left by scientists or residents.
- Dialogue with key NPCs like Dr. Forsythe or the Overseer.
Vault 95 Codes
Vault 95 is a bit different. It's a vault designed for drug rehabilitation, and upon your entry, you'll find it in a state of disrepair, overrun by gunners. The "codes" for Vault 95 are less about a single numerical sequence to open the main door and more about overcoming its defenses and accessing its intact, inner chambers.
The primary challenge here is not finding a code to enter, but rather dealing with the hostile inhabitants and disabling the security systems.
Accessing the Inner Chambers
Upon entering Vault 95, you'll find yourself in the main entrance area, which is occupied by Gunners. You'll need to fight your way through. As you progress deeper into the vault, you will encounter locked doors and terminals that require access codes or bypasses.
The key to unlocking the valuable resources in the deeper sections of Vault 95 lies in disabling its automated defenses and accessing the main living quarters.
Look for:
- Terminal entries throughout the vault. These often contain security codes or instructions for disabling turrets and laser grids.
- Keycards dropped by deceased Gunners or found in their living quarters. These can grant access to specific locked areas.
- Environmental clues. Sometimes, the solution is as simple as finding a switch or rerouting power.
The most significant "code" or override you'll likely encounter is related to disabling the vault's self-destruct sequence or its extensive security grid. This usually involves a series of terminal interactions and combat.
Vault 75 Codes
Vault 75 is a particularly grim location, a former training facility for young boys run by the ruthless administration of Vault-Tec. You'll find it located beneath the Malden Middle School. The entrance is a bit of a puzzle in itself.
Finding the Entrance and Codes
To gain access to Vault 75, you first need to locate the entrance. This is typically found in the basement of Malden Middle School. There's a specific elevator that leads down.
Once inside, the vault is divided into sections, and much like Vault 95, it's not just about a single code to open the main door. Instead, you'll need to progress through its challenges.
The primary codes for Vault 75 are related to disabling the experimental training program and accessing the research facilities.
You will need to find:
- The Elevator Access Card: You'll need to obtain an elevator access card to descend into the vault. This is usually found in the vicinity of the elevator shaft or on the body of a security guard.
- Security Terminal Codes: As you explore the deeper levels, you will encounter locked doors and security terminals. These terminals will often require codes to bypass security protocols, disable defenses, or access the vault's administrative areas.
- Research Data and Notes: Pay close attention to any notes, holotapes, or computer logs you find. These will often contain numerical codes or clues that lead to the next access point.
A significant challenge in Vault 75 involves dealing with the "Experimental Subjects" that have been turned into hostile entities. You'll need to fight your way through these and other security measures to reach the core of the vault's secrets.
FAQ: Your Burning Questions Answered
How do I find Vault 81?
Vault 81 is located southwest of Diamond City, near the area known as the "Commonwealth Bank." You'll find its entrance disguised as a small, unassuming shack.
Why is it so hard to find vault codes?
Vault codes are designed to be part of the game's exploration and reward system. Finding them often requires completing quests, defeating enemies, or thoroughly searching environments, adding a layer of challenge and accomplishment to the game.
Can I brute-force vault codes?
While some terminals allow for a hacking mini-game, most critical vault codes are not intended to be brute-forced. The game encourages players to find them through exploration, quest progression, or by deciphering clues.
What happens if I miss a vault code?
If you miss a specific code, you might be able to use the hacking skill to bypass the lock or find an alternative route. However, for essential quest-related codes, you'll likely need to backtrack and find the information you missed.

