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Appliance Error Codes

GE GDT665SGNBB Error Code C1

Error C1 on GE : Drain pump overtime — drain cycle exceeded 2 minutes without completing. Follow the troubleshooting steps below to diagnose and fix this dishwasher issue. ## What Error Code C1 Means on a GE GDT665SGNBB Drain pump overtime — drain cycle exceeded 2 minutes without completing ## What This Error Means Error code C1 on your GE dishwasher means the drain pump ran for more than 2 minutes during a single pump-out phase without successfully completing drainage. The control board times each pump-out segment; when the pump runs past the 2-minute limit, C1 is triggered and an audible alarm may sound. The dishwasher door can still be opened to address the issue. Common causes include: a blocked air gap (the small cylinder near your kitchen faucet), a kinked drain hose, a clogged garbage disposal that prevents water from draining, or a partial blockage inside the drain hose or drain pump filter. C1 is one of the milder drainage fault codes on GE dishwashers (C2 = 7-minute total drain overtime, C3 = complete drain failure). Press Cancel/Reset to stop the alarm and begin with the air gap and drain hose inspection. ## Quick Diagnostic Summary | Detail | Value | |--------|-------| | Error Code | C1 | | Severity | Medium | | Appliance | GE GDT665SGNBB GE Dishwasher | | User-Fixable | Yes | | Applicable Models | GDT665SGNBB, GDT695SSJSS, PDT715SYNFS | ## Step-by-Step Troubleshooting | Step | Action | What To Do | Expected Result | |------|--------|------------|-----------------| | 1 | Press Cancel/Reset to clear the alarm | Press the Cancel or Reset button on the control panel to stop the drain pump alarm and clear the C1 display. This stops the pump cycle. If standing water remains in the tub, the dishwasher will attempt another drain cycle when you press Cancel — allow it to complete. | Alarm stops and C1 clears from the display. Dishwasher drains standing water during the cancel cycle. | | 2 | Clean the air gap | Locate the air gap — a small chrome or plastic cylinder typically mounted on the kitchen sink deck or countertop near the faucet. Remove the decorative cap and the inner cover. Clean any debris (food particles, slime, grease) from inside the air gap using a bottle brush and running water. Replace the cap. | Air gap interior is clear of all debris. Water flows freely when the dishwasher drains. | | 3 | Inspect and clear the drain hose | Pull the dishwasher out slightly or reach behind the unit. Inspect the drain hose (the corrugated hose running from the dishwasher to the sink drain or garbage disposal) for kinks or pinches. If the hose loops down below the sink drain connection point, it may be creating a siphon — the high-loop installation requires the hose to have a high point near the underside of the countertop before connecting to the drain. | Drain hose is straight with no kinks. Hose forms a high loop near the underside of the countertop. | | 4 | Run the garbage disposal | If the drain hose connects to the garbage disposal, run the disposal for 30 seconds before starting the next dishwasher cycle to clear any food blockage in the disposal’s dishwasher drain inlet. If the disposal has never been used since installation, the knockout plug inside the disposal inlet may not have been removed — this is a common installation error. | Garbage disposal runs freely and is clear of blockage. Disposal drain inlet is unobstructed. | | 5 | Run a test cycle and monitor drainage | Start a short cycle (Rinse Only or Quick Wash) and observe the dishwasher during the drain phase. Listen for the drain pump — it should be audible but quiet. The cycle should complete without C1. | Test cycle completes without C1. Drain phase finishes within the 2-minute limit. No standing water in the tub after cycle. | ## Frequently Asked Questions ### What is the air gap on a GE dishwasher and why does it cause C1? The air gap is a back-flow prevention device between the dishwasher drain hose and the household drain. It prevents contaminated drain water from siphoning back into the dishwasher. When the air gap is clogged with grease, food particles, or mineral deposits, it restricts drainage flow enough to cause the drain pump to run overtime, triggering C1. Clean the air gap every 6 months as routine maintenance. ### C1 appears after running the garbage disposal — why? If the garbage disposal is used heavily with fatty foods or coffee grounds, it can accumulate a buildup in the drain inlet that restricts dishwasher drainage over time. After heavy disposal use, run the disposal with cold water for 30 seconds before starting the dishwasher to pre-clear the inlet. ### Is C1 different from C2 and C3? Yes. C1 = single drain segment exceeded 2 minutes (mild restriction). C2 = total drain time across the full wash cycle exceeded 7 minutes (persistent moderate restriction). C3 = complete drain failure — pump ran but drainage did not complete at all (severe blockage or pump failure). C1 is the earliest warning of a developing drainage problem. ### Can I run the dishwasher again after C1? After clearing the alarm and addressing the root cause (air gap, drain hose, disposal), you can restart the dishwasher. If C1 returns on the next cycle without any change, the drainage restriction is not fully resolved. Continue diagnosing — the next step is to inspect the drain pump filter inside the dishwasher tub. --- Last Updated: March 2026 · GE GE Dishwasher · Error Code C1 ### Is it safe to keep using my GE with error C1? If error C1 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the dishwasher with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error C1 on a GE ? Repair costs for error C1 on the GE dishwasher depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a GE-authorized service provider for an accurate estimate based on your specific situation. ### What does error code C1 mean on a GE dishwasher? Error code C1 on GE dishwasher models indicates Drain pump overtime — drain cycle exceeded 2 minutes without completing. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue. ### Is it safe to keep using my GE with error C1? If error C1 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the dishwasher with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error C1 on a GE ? Repair costs for error C1 on the GE dishwasher depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a GE-authorized service provider for an accurate estimate based on your specific situation. ### What does error code C1 mean on a GE dishwasher? Error code C1 on GE dishwasher models indicates Drain pump overtime — drain cycle exceeded 2 minutes without completing. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.