GE Dishwasher C6 Error Code: What It Means & How to Fix It

C6 = Incoming water too cold. C6 means the water coming in is too cold. GE says it should be at least 120°F.

Can you fix it yourself? Yes

Check your model: Error codes can mean different things on different GE models. Find your model number (usually on a sticker inside the door or lid, or on the back) and confirm the code in your user manual.

Safety first: Unplug the appliance (or switch off its breaker) before you remove panels, filters or hoses. Turn off the water supply valves before you disconnect any hose, and keep a towel and shallow pan handy. Never work on wiring, gas lines or sealed refrigerator systems yourself.

Quick checks (2 minutes)

Is your water heater set low?
Is someone showering or doing laundry at the same time?

How to fix GE Dishwasher C6

Before starting the dishwasher, run the kitchen faucet until the water is hot.
Raise the water heater temperature if needed, keeping scald risk in mind.
Avoid showers and laundry while the dishwasher runs.
Use options that lengthen the cycle so it heats more.

Still showing C6?

If incoming water is hot and C6 persists, the temperature sensor may be at fault. See C7, or contact service.

Repair or replace?

If the appliance is under warranty, call GE first, since a repair may be free. Out of warranty, a common rule of thumb is to compare the repair quote with the cost of a new unit and the appliance's age before deciding.

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FAQ

What temperature should dishwasher water be?

GE says at least 120°F.

Source

Code meaning and official steps from: https://products.geappliances.com/appliance/gea-support-search-content?contentId=16673. Last verified 2026-10-21.