DOOM 3 - Locker / Door Codes (2025)

A short and simple guide on locker and door codes for the Doom 3 game.

In Doom 3, security codes are used to unlock storage vaults and other locked facilities. They are almost always retrieved via emails or audio log entries from PDAs on the same level. Many of the heavy weaponry and massive powerups are password-protected, therefore the more codes discovered, the better armed the marine becomes.

DOOM 3 Locker & Door Codes

Original Game

Mars City

• Locker next to elevator ID#001 – 396
• Locker in medical lab ID#017 – 347
• Weapons storage room – 584

Mars City Underground

• Locker in Energy Stabilization Unit ID#023 – 531
• Valve Control Panel – 842

Administration

• Locker next to health station ID#013 – 586
• Martian Buddy cabinet – 0508

Alpha Labs – Sector 1

• Locker in EPD lab ID#009 – 752

Alpha Labs – Sector 2

• Damaged locker ID#038 – 409
• Locker at top of ladder ID#039 – 102

Alpha Labs – Sector 3

• Locker at bottom of lift ID#047 – 123
• Locker behind locked door ID#048 – 123
• Locker in final room ID#049 – 123

Alpha Labs – Sector 4

• Locker on far side of bridge ID#064 – 651

Enpro Plant

• Locker in her office ID#063 – 972
• Plasma Storage Room – 734

Communications: Central Communications Tower

• Locker in Sentry Bot control room ID#054 – 246

Recycling – Sector 2: Waste Recycling Center

• Locker near airlock ID#003 – 483

Monorail: Facility Transport

• Locker in security office ID#054 – 142
• Monorail Airlock – 826
• Lockers near turret gun ID#078 – 364
• Lockers near turret gun ID#079 – 364

Delta Labs – Level 1

• Locker in storage room ID#21D – 298

Delta Labs – Level 2A

• Locker in Records Office ID#112 – 538
• Office with BFG ID#901 – 931
• Locker next to Halon control panel ID#116 – 972
• Locker in Operations Server Room ID#114 – 715

Delta Labs – Level 2B

• Locker in maintenance corridor ID#103 – 259
• Lockers in specimen lab ID#216 – 624
• Lockers in specimen lab ID#217 – 624
• Locker at bottom of lift ID#213 – 371
• Locker in Analysis Control ID#666 – 372
• Storage Area 07 – 725
• Martian Buddy cabinet – 0508
• Final room with Arch-vile – 463

Delta Labs – Level 3

• Lockers near large teleporter ID#386 – 836
• Lockers near large teleporter ID#387 – 836
• Locker near teleporter control panel ID#317 – 841

Delta Labs – Level 4

• Locker in control room ID#104 – 579

Central Processing: Processing Distribution Center

• Locker near security checkpoint ID#452 – 571
• Lab A Door – 627
• Locker in Lab A ID#669 – 468

Resurrection of Evil (DLC)

Erebus

• Locker in elevator bay ID#028 – 516
• Locker in elevator bay ID#029 – 516
• Locker in chemical storage area ID#105 – 769
• Display Case in Sarge’s Office – 428
• Locker in Administration Access ID#407 – 937
• Locker in main office ID#408 – 937
• Lockers in armory ID#034 – 134
• Lockers in armory ID#035 – 134

Phobos Labs

• Locker in storage area ID#042 – 714
• Security Core Bridge – 281
• Locker in Reactor Control ID#009 – 492
• Martian Buddy cabinet – 634

Delta Labs

• Lockers in specimen lab ID#116 – 634
• Lockers in specimen lab ID#117 – 634

The Lost Mission (DLC)

Enpro Sector 2

• Coolant Control Room Display Cabinet – 731

Underground

• Locker in first room ID#054 – 631
• Locker in second Revenant room ID#108 – 847

Exis Labs

• Lockers in security office ID#104 – 579
• Locker in Teleporter Security ID#965 – 428
• Locker in bruiser room ID#071 – 532
• Lockers in Central Operations ID#805 – 372
• Lockers in Central Operations ID#806 – 372

• DOOM 3