ApplianceErrors.com

GE Appliances Dishwasher Error Code C6

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: July 19, 2026
⚠ Medium Severity 🔧 Easy DIY

Incoming water temperature too low

The most common cause of the C6 error on a GE Appliances dishwasher is home water heater set below 120°F (49°C) (~45% of cases); start with: run the nearby hot tap first.

💰 DIY cost: $0–$40 👨‍🔧 Pro cost: $100–$220 Save $100+ by doing it yourself
GE Appliances Dishwasher error code C6 on the display panel
How the C6 code appears on a GE Appliances dishwasher display

What Does Error Code C6 Mean on a GE Appliances Dishwasher?

Incoming water temperature too low.

C6 is an informational temperature code rather than a hard fault. During fill, the dishwasher's NTC thermistor measures incoming water and, if it reads below roughly 120°F, the control flags C6 and typically extends the cycle while the onboard heater brings water up to temperature. It differs from a heater failure (often shown as HO) because the appliance is compensating, not detecting a broken element. On some newer boards the same low-temperature condition surfaces as C7.

Models affected: GE/Profile/Café dishwashers that report status codes such as C6/C7 (including models like GDF630PSMSS, GDT665SSNSS, and GDP630PYRFS)
What owners report: Owners commonly report C6 appearing in winter or when the dishwasher is far from the water heater, and it often clears simply by running the kitchen hot tap for a minute before starting. It can also be falsely triggered when a shower or laundry load draws hot water mid-cycle.

What Causes Error Code C6?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Home water heater set below 120°F (49°C) 45% of cases
  2. 2
    Cold water sitting in the supply line 30% of cases
  3. 3
    Hot water used elsewhere during the cycle 15% of cases
  4. 4
    Water temperature sensor (NTC) drift 10% of cases

How to Fix GE Appliances Dishwasher Error Code C6

🔧 Easy DIY Est. time: 10–20 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Run the nearby hot tap first

    Run the kitchen hot faucet 30–60 seconds before starting to purge cold water from the line.

  2. 2

    Raise water heater temperature

    Set the water heater to at least 120°F (49°C).

  3. 3

    Avoid competing hot-water use

    Don't run showers or laundry while the dishwasher fills.

  4. 4

    Use a heated/longer option

    Select a heated-wash option so the heater adds the needed temperature.

How to Reset Error Code C6

Run hot water at the sink first, then restart the cycle.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full GE Appliances dishwasher reset guide → Enter diagnostic mode →

Did this guide fix your appliance?

When to Call a Professional

If incoming water is confirmed hot but C6 persists, the temperature sensor or heater circuit needs testing.

Average professional repair cost for this issue: $100–$220

Related Error Codes

C7
OWI sensor failure — optical water indicator fault
⚠ Medium Severity
HO
Water not hot enough — incoming water temperature too low
⚠ Medium Severity

Find Replacement Parts

Use these links to find the exact replacement parts for your GE Appliances Dishwasher:

🔩
Search PartSelect
GE Appliances Dishwasher repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More GE Appliances Dishwasher Error Codes

C5 Drain failure — dishwasher not draining FL Flood switch activated — water in base tray C4 Wash motor failure — circulation pump not running PF Power failure — cycle interrupted by power outage OE Drain error — not draining properly C3 Control board failure

Frequently Asked Questions

Can I keep using my GE Appliances Dishwasher when error C6 appears? +
You often can for a cycle or two, but the temperature issue behind C6 will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.
What most commonly causes C6 on a GE Appliances Dishwasher? +
Across reported GE Appliances dishwasher repairs, the most frequent is home water heater set below 120°F (49°C) (45% of cases), cold water sitting in the supply line (30%), then hot water used elsewhere during the cycle (15%). Check them in that order before replacing any parts.
C6 keeps coming back after a reset — what should I check next? +
A reset only clears the stored C6 fault; if it returns, the temperature problem is still present. Move on to the physical checks — run the nearby hot tap first, then raise water heater temperature — since the code will reappear until the root cause is resolved. This is a beginner-friendly job needing only basic hand tools.
How much does it cost to fix GE Appliances Dishwasher error C6? +
A DIY repair typically runs $0–$40 in parts, versus $100–$220 for a professional service call, so handling it yourself saves around $100. Expect the work to take about 10–20 minutes.
Which GE Appliances Dishwasher models show error C6? +
C6 is documented on GE/Profile/Café dishwashers that report status codes such as C6/C7 (including models like GDF630PSMSS, GDT665SSNSS, and GDP630PYRFS). Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: July 19, 2026.

← All GE Appliances Dishwasher Error Codes ← All GE Appliances Error Codes