Dishwasher displays C6; dishes may come out cloudy or not fully clean; water temperature may be low.

Safety: Turn off power at the breaker before accessing the heater or wiring. Water inside can be hot.

Steps:

• 1. Check incoming water temperature: Run hot water at the kitchen sink for 1–2 minutes. Measure temperature; GE recommends around 120°F (49°C). If significantly lower, adjust your water heater.
• 2. Inspect heater visually: Remove the lower rack and look at the exposed heating element (if your model has one visible). Check for breaks, heavy scale, or burn marks.
• 3. Test heater continuity (advanced): With power OFF and unit pulled out if needed, disconnect the heater terminals and use a multimeter to check resistance. An open circuit indicates a failed element.
• 4. Check thermistor / temperature sensor: Many GE Profile models use a thermistor in the sump. Inspect the connector and wiring for corrosion or damage.
• 5. Run a hot cycle: After verifying water temperature and connections, run a cycle with the sanitize or high-temp option. If C6 returns and water is not heating, the heater or sensor likely needs replacement.

Heater and sensor replacement involve electrical work and sealing components; if unsure, contact a technician.