GE Dishwasher C1 Error
What it means
C1 means your GE dishwasher took longer than expected to pump the water out — the drain step ran past about 2 minutes without finishing. It signals that water is draining too slowly or not at all, usually because of a restriction somewhere in the drain path.
Common causes of the C1 error
- A clogged air gap at the sink that restricts water flow out of the dishwasher.
- A kinked, crimped, or partially blocked drain hose.
- A garbage disposal that is full or whose dishwasher knockout plug was never removed.
- Food debris or a blockage in the dishwasher's filter or drain pump.
- A standpipe or sink drain that is slow or clogged downstream of the dishwasher.
How to fix the GE Dishwasher C1 error
- 1Reset the dishwasherTurn the dishwasher off and cut power at the plug or breaker for 1-2 minutes, then restore it. A simple reset will sometimes clear C1 if it was a one-time slow drain. If the code returns, work through the steps below.
- 2Clean the air gapIf your sink has an air gap (the small cylindrical cap near the faucet), unscrew the cover and lift out the cap. Clear any food debris or buildup inside, then reassemble. A clogged air gap is a common cause of slow draining.
- 3Inspect and reposition the drain hoseLook behind and under the dishwasher for the drain hose. Straighten any kinks or crimps so water can flow freely, and confirm the hose is not crushed where it connects to the disposal or standpipe. Replace the hose if it is damaged.
- 4Run the garbage disposal and check the filterRun the disposal for a few seconds to clear any standing food, since the dishwasher often drains through it. Then remove the dishwasher's bottom filter and rinse away trapped debris before reseating it.
🧰 When to call a professional
If the air gap, hose, disposal, and filter are all clear but C1 keeps returning, the drain pump or the main control board may be failing. Diagnosing and replacing a drain pump involves disconnecting water and power and accessing the base of the unit, so contact GE Appliances service if you are not comfortable doing that.
GE C1 error — FAQ
Is the C1 code serious?
It is not an emergency, but you should not ignore it. The dishwasher is not draining properly, so dishes will not rinse clean and dirty water can sit in the tub. Most C1 cases are fixed by clearing a simple drain restriction.
Why do I see water left in the bottom after a cycle?
Standing water along with C1 confirms the drain step did not finish. Check the air gap, drain hose, disposal, and filter in that order — one of those is usually restricting the flow.
Do I need to remove a new disposal's knockout plug?
Yes. If you recently installed a garbage disposal, the dishwasher inlet on the disposal ships with a knockout plug that must be removed. If it is left in place, the dishwasher cannot drain and will throw codes like C1.
Sources
This guide is independently written and not affiliated with GE. Always unplug appliances before servicing and follow your model's manual. Error codes and steps can vary by model — when in doubt, consult a qualified technician.