C7 Moderate Hard — consider a tech

GE Dishwasher C7 — Water Temperature Sensor (Thermistor) Fault

GE Dishwasher · Error code C7

What C7 Means

C7 specifically points to an out-of-range or open/shorted water temperature sensor (thermistor) circuit.

Symptoms

  • C7 on display
  • No heat or excessive heat
  • Cycles abort early

Common Causes

1
Open or shorted thermistor

NTC sensor failed open (infinite) or short (near zero).

2
Damaged thermistor harness

Conductors broken or pinched between sump and main control.

3
Failed main control board

Reference voltage or A/D channel for the sensor failed on the board.

How to Fix It

  1. Disconnect power.
  2. Locate the thermistor at the sump and disconnect the harness.
  3. Measure resistance at room temperature; compare to GE tech sheet (typically ~50K ohm).
  4. If thermistor is in spec, ohm-out the harness back to the control connector.
  5. If sensor and harness are good, replace the main control board.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement GE dishwasher temperature sensor / thermistor View on Amazon→

More GE Dishwasher Codes

1h 1h — Delay Start Active 888 888 — Display Self-Test / Demo C1 C1 Error — Slow Drain (Over 2 Minutes) C2 C2 Error — Drain Cycle Too Long (Over 7 Minutes) C4 C4 — Turbidity / Wash Pump Fault C5 C5 — Heater / Heat Fault

All GE codes → All dishwasher codes →

Verified against manufacturer documentation: geappliances.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.