coffee-maker Error Codes

F2 on a Keurig coffee maker usually means a heater/temperature sensor fault. Here’s how to reset it, what to check, and when it’s time to toss it.

F21 on a Keurig coffee maker is a water-flow timeout error. Here’s how to clear it fast before you toss the machine.

F20 on a Keurig usually means a water flow or pressure fault. The machine isn’t moving water the way it expects, usually from a clog, scale, or a pump issue.

F18 on a Keurig coffee maker is a water flow / fill fault. Here is the fast, real-world fix and when it is worth repairing versus replacing.

F17 on a Keurig usually means an internal fault that shuts the brewer down. Here’s what it really means, what the manual says, what techs actually do, and when to stop throwing money at it.

F16 on a Keurig coffee maker is a heater/temperature fault. Here’s the fast, no‑nonsense way to reset it, clean it, and decide if it’s worth repairing or if it’s time to replace the machine.

Keurig F15 means the brewer thinks the heating system has failed. Here’s how to clear it, when to quit, and what parts usually die.

Keurig F10 usually points to a heating/temperature fault in the coffee maker. Here’s the straight-shot guide to what it means and what you can realistically do about it.

F7 on a Keurig coffee maker is a heating-system error; here’s how to reset it, test the parts, and know if it’s worth fixing.

Keurig showing F6? That’s a heater/temperature fault. Here’s the fast track to clearing it, what actually fails, and when to stop sinking money into it.

Keurig throwing F5 and refusing to brew? Here’s what F5 really means, what the official manual says, and the field tricks techs use to clear stubborn water-flow and pump faults.

F4 on a Keurig coffee maker is a water-flow / pump fault. Here’s the fast-track way to clear it, plus when to repair vs replace.

F11 on a Keurig coffee maker is a water flow or fill fault. Here is how a tech would clear it before you spend money on a new brewer.

F12 on a Keurig usually means an internal heating/temperature fault. Here’s the fast, no-fluff path from easy reset to the real parts a tech would check.

F13 on a Keurig coffee maker is an internal brew system fault, usually caused by a water flow, pressure, or temperature sensor issue. Here is the fast, no-nonsense way to clear it or know when to replace the machine.

F3 on a Keurig is a temperature sensor/thermistor fault. The board doesn’t trust the water temperature reading, so it locks the machine and stops brewing.