FixByModel
C7

GE C7: Water temperature sensor circuit fault

The control detected that the water temperature sensor circuit is open, shorted, or otherwise not working, so it cannot read water temperature reliably. This usually needs a technician.

May need a technician

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. Failed water temperature sensor or thermistor
  2. Damaged or loose wiring in the sensor circuit
  3. Corroded sensor connector
  4. Faulty control board
Before you start — unplug the appliance and turn off the water supply. You'll be working near water and electrical parts, and drained water can be hot. If a step involves the pump, wiring, or opening the cabinet and you're unsure, stop and call a qualified technician.

Step-by-step fix

1Power resetTurn off the dishwasher's circuit breaker for about 30 seconds, then restore power.
2Restart a cycleRun a normal cycle and see whether the C7 code returns.
3Call for serviceIf the code persists, schedule a repair since the sensor circuit needs professional testing.
4Have the sensor checkedA technician can measure the sensor and wiring and replace the thermistor or board as needed.

Still showing C7?

If you’ve worked through every step and C7 keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

GE dishwashers. GE and GE Profile dishwashers with electronic controls

FAQ

What does GE C7 mean?

Water temperature sensor circuit fault. The control detected that the water temperature sensor circuit is open, shorted, or otherwise not working, so it cannot read water temperature reliably. This usually needs a technician.

What causes GE C7?

The most likely cause is failed water temperature sensor or thermistor. Other causes include Damaged or loose wiring in the sensor circuit; Corroded sensor connector; Faulty control board.

Can I fix GE C7 myself?

Some checks are DIY, but this code often points to an internal component, so it may need a qualified technician.