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Error code reference

GE Dishwasher Error Code C1

Pump out portion of the cycle takes longer than 95 seconds, indicating a partially blocked drain; cycle continues.

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What the C1 error code actually means

The C1 code means your dishwasher is taking too long to pump the water out during draining, which usually points to a partial clog somewhere in the drain line. The good news is the dishwasher keeps running and finishes the cycle, so your dishes are still being washed. Checking the small cylindrical air gap on your countertop, looking for a kinked drain hose, or running your garbage disposer to clear it out are the best first steps.

Diagnostic procedure

The full C1 procedure

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1
First diagnostic step
Check drain air gap for restriction; check for kink in drain hose; run disposer to clean it out.
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Most common causes of C1

Ranked by how often they cause this code
  1. 1Clogged drain air gap
  2. 2Blocked or full garbage disposer
  3. 3Kinked drain hose
  4. 4Debris clog at drain hose connection
  5. 5Failing or weak drain pump

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Questions people ask about C1

What does C1 mean on a GE dishwasher?
C1 means the dishwasher's drain pump took longer than 95 seconds to complete the pump-out portion of the cycle, which indicates a partial restriction in the drain system. The code does not stop the cycle; the dishwasher continues running. The most likely causes are a clogged air gap, a blocked garbage disposer, or a kinked drain hose.
Is a C1 code on a GE dishwasher dangerous?
The C1 code does not represent a safety hazard. It is a performance fault indicating slow draining rather than an electrical or heating system issue. The dishwasher continues the wash cycle normally, so there is no immediate risk to the appliance or your home. However, leaving a partial drain restriction unaddressed can put extra strain on the drain pump over time.
How much does it cost to repair a GE dishwasher showing a C1 error?
In many cases, clearing a C1 code costs nothing because the cause is a clogged air gap, a full disposer, or a kinked hose that you can address yourself. If the drain pump has failed and needs replacement, parts and labor typically range from around $150 to $350 depending on your location and the service provider. Diagnosing the drain path yourself before calling a technician can save significant cost.
How do I fix a C1 error on a GE dishwasher?
Start by checking the drain air gap on your countertop and clearing any debris from it. Next, run your garbage disposer for 15 to 20 seconds to clear any food waste that may be backing up the drain line. Then inspect the drain hose behind the dishwasher for kinks. If the code returns after clearing these points, inspect the drain hose connection at the disposer or tailpiece for a clog, or consider testing the drain pump.
Will resetting the dishwasher clear the C1 code?
Resetting the dishwasher may clear the displayed code temporarily, but the C1 error will return if the underlying drain restriction is not resolved. The control board triggers the code each time the pump-out phase exceeds 95 seconds, so the fix requires clearing the physical blockage in the drain path rather than just resetting the unit.

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