Starfield ship reactor class error - fix the shipbuilding issue

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Starfield ship reactor class error - A screenshot of the shipbuilding interface in the game
Credit: Bethesda

If you are encountering the Starfield ship reactor class error while building your ship, this guide will help you resolve the issue.

Navigating the mechanics of Starfield can be a daunting task, given its complexity. From basic tasks like using a jetpack and moving objects to more intricate challenges such as assembling spacecraft, players frequently find themselves confronted with a learning curve.

In this guide, we'll give you helpful advice to resolve the frustrating Starfield ship reactor class error. With these tips, you can finish building your dream spaceship without any problems and explore the expansive planets of Starfield.

How to fix Starfield ship reactor class error

To fix the ship reactor class error in Starfield, you should ensure that the ship modules you use belong to the same class or a lower class compared to your reactor. In case you're unaware, A is the lowest level, and C is the highest level.

So for instance, if you have a class B reactor, then you can use class A or B modules for the rest of the ship's systems, but you cannot use class C modules. Attempting to do so would result in the ship reactor class error. To determine the class of your module, simply hover your cursor over it.

It's also important to note that to fly a class B ship (equipped with a class B reactor), you'll need to upgrade your Piloting skill to Level 3. Likewise, if you want to operate a class C ship (fitted with a class C reactor), you'll need to raise your Piloting skill to Level 4.

Put simply, you could end up creating a ship class that you're unable to fly. To swiftly upgrade your Piloting skill, consider joining the Vanguard in New Atlantis and replaying the Flight Simulator several times, as they count towards Ships Destroyed.

What does the ship reactor class error in Starfield mean?

In Starfield, the ship modules or parts are sorted into classes (A, B, and C) that should match the ship's reactor class, which is similarly classified into classes A, B, and C. Your spaceship's class is decided by the class of the reactor.

The ship reactor class error in Starfield occurs when you try to assemble a spaceship using ship modules that are of a higher class than what the installed reactor can support.


In technical terms, the reactor serves as the power source for the various components within the ship. If you have a class B reactor, it might not be capable of supplying enough power to meet the requirements of a class C component, causing an error.

And that covers everything we know about the ship reactor class error in Starfield. While you are here, be sure to learn how to recharge suit protection and how to use Starfield console commands to get infinite wealth.

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