Can’t figure out how to open the Q-03 Stress Testing Cabinet in 007 First Light? This is a common early-game puzzle many players get stuck on during the Man of the Hour mission (Chapter 15) inside the Q-Lab.
This quick How to Open the Q-03 Stress Testing Cabinet Code guide gives you the exact code and the easiest way to find it yourself.
Quick Answer: Q-03 Stress Testing Cabinet Code
The code is: 4397
Enter this on the keypad attached to the Q-03 cabinet to unlock it and retrieve the gear inside.
Step-by-Step: How to Open the Q-03 Cabinet
- Reach the Q-Lab
During Man of the Hour, you’ll enter the Q-Lab as part of your gadget training. Follow the main objective until Q gives you free time to explore the facility. - Locate the Q-03 Section
From the main entrance of the Q-Lab, head to the left side toward the testing and training rooms.
The Q-03 Stress Testing Cabinet is in a small side room marked with a big “Q-03” sign above the door. - Find the Code (Two Reliable Methods) Method 1: Whiteboard Clue (Recommended)
- Inside the Q-03 room, look for the large whiteboard on the right wall.
- On the whiteboard, you’ll see test results and numbers written in red marker.
- The code 4397 is written clearly at the bottom right corner, circled, with the note “Stress Test Pass Code – Do Not Forget!” Method 2: Q’s Computer Terminal
- Go to the nearby computer terminal (left of the cabinet).
- Interact with it and read the email titled “Stress Testing Schedule.”
- The code is listed in the email body: 4397.
- Enter the Code
Approach the Q-03 Stress Testing Cabinet and input 4397 on the keypad.
The cabinet will unlock, giving you access to useful early-game equipment (usually including upgraded gadgets or extra ammo).
Pro Tip: The code is the same on every playthrough — no randomization. You can grab this right after entering the Q-Lab before progressing the main story.
Why the Q-03 Cabinet is Worth Opening
Unlocking this cabinet gives you early access to better tools that make later missions (especially stealth sections) much easier. It’s part of the optional exploration that rewards observant players.
Common Issues & Troubleshooting
- Code not working? Make sure you’re entering 4397 exactly and press confirm/enter at the end.
- Can’t find Q-03? It’s on the west/left side of the Q-Lab, near the shooting range and Q-08 Armoury.
- No whiteboard visible? Check both sides of the room — sometimes the camera angle hides it behind equipment.
- Playing on higher difficulty? The code stays the same.
Related Q-Lab Codes in Man of the Hour
Opening the Q-03 Stress Testing Cabinet is one of the easiest ways to gear up early and feel like a proper 00 agent.
Unlocked the Q-03 cabinet yet? Let us know in the comments if this helped or if you’re stuck on any other First Light puzzles. Share this guide with fellow agents!
Last updated: May 2026
