Error code · Dishwasher

GE Electronic Dishwasher Code C6: Incoming Water Below 120F

Medium · inspection needed

Code: C6
Appliance: Dishwasher
Brand: GE
Warranty: 30-day workmanship

What C6 means

On GE electronic dishwashers that display C-codes, such as the PDT855SSJSS, C6 reports that the incoming water temperature is too low. The control expects water of at least 120F at the dishwasher. If the supply is cooler, the cycle cannot wash and sanitize as designed and the control shows the code. You may see C6 first thing in the morning or after heavy hot-water use elsewhere in the house. The cause is often the hot water supply rather than the dishwasher.

Common causes of C6

Hot water has not reached the dishwasher yet
Water heater set below 120F
Another appliance or faucet using hot water at the same time
Long pipe run cooling the water before it arrives

✓ One safe check you can try

1. Run the hot tap at the nearest kitchen sink until the water is hot. 2. Check the water heater setting and raise it if it is set low. 3. Avoid running showers or the washing machine at the same time. 4. Choose a cycle option that lengthens the cycle. 5. Start the dishwasher again.

! Why to stop there

If the water at the sink is hot and C6 persists, the dishwasher may be misreading the temperature.
We compare the temperature at the supply with what the dishwasher reports.
We tell you what we find, and a written price comes first.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Dishwasher codes

Smart Assist light redGE Dishwasher Smart Assist Light Red: A Potential Problem Was Detected Smart Assist light yellowGE Dishwasher Smart Assist Light Yellow: A Notification Is Waiting in SmartHQ Start light flashingGE Dishwasher Start Light Flashing: Door Opened or Cycle Interrupted Low Rinse AidGE Dishwasher Low Rinse Aid Indicator: Refill the Dispenser H20 (spelling variant)GE Dishwasher Code H20: Fill Brought in Too Little Water H2OGE Dishwasher Code H2O: Low Water in the Tub LEAK DETECTEDGE Dishwasher Message LEAK DETECTED: Cycle Canceled by the Control nH (Delay Start)GE Dishwasher Display nH: Delay Start Counting Down

C6C6 questions

Why is my GE dishwasher showing C6?

The water entering the dishwasher is cooler than the 120F the control wants. This usually comes from the hot water supply, not from a broken part.

What water temperature does the dishwasher need?

At least 120F at the dishwasher. If your heater is set lower, or the hot water has not traveled far enough, the control may flag C6.

Will running the faucet first help?

Yes. Running the nearest hot tap until it is hot pulls warm water through the pipe, so the dishwasher receives hot water as soon as it fills.

Book a visit

Still seeing C6?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 547-5545