GE Dishwasher C7 — What It Means & How to Fix It
C7 means the dishwasher's water temperature sensor circuit has stopped reading correctly — worth one power reset in case it's a glitch, but a repeat means the sensor needs a technician.
What this code means
C7 indicates the temperature sensor circuit has become inoperative — the control is no longer getting a believable reading from the sensor that watches water temperature. GE's first step is a brief power reset, which clears the occasional electronic hiccup. If C7 returns, the sensor or its wiring has genuinely failed, and because it sits inside the door and tub assembly, replacing it is a technician's job rather than a user step.
C7 is the sensor-circuit code; the related C6 is about the incoming water being too cold. On many GE models the temperature sensor is built into the flood-switch assembly, which is why a technician often replaces the two together.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| One-off control or wiring glitch | Occasional | Yes — power reset |
| Failed temperature sensor (thermistor) | Common | No — technician job |
| Damaged or loose sensor wiring harness | Occasional | No — technician job |
| Control board misreading the sensor | Less common | No — technician job |
What you can try yourself
- Switch the dishwasher off at the breaker or wall switch for about 30 seconds, then restore power — this clears a one-time sensor-circuit glitch.
- Run a normal cycle and watch whether C7 returns.
- If the code comes back, stop using that cycle and book a repair — the sensor and its wiring sit inside the door and tub assembly.
- Note for the technician whether dishes have been finishing cold or wet, which corroborates a temperature-sensing fault and shortens the diagnosis.
When to call a technician
- C7 reappears after the power reset — that's the signal it's a real sensor fault, not a glitch.
- Dishes come out cold and wet, consistent with the control mis-reading temperature.
- C7 shows together with C6 or with heating complaints, pointing at the sensing circuit.
Typical professional repair cost: A sensor or flood-switch assembly replacement typically runs $130–$260 with labor; a control board, if implicated, can reach $200–$450.
Frequently asked questions
Can I fix a C7 code myself?
Only the first step — a 30-second power reset to rule out a glitch. If C7 returns, the temperature sensor or its wiring has failed, and that part lives inside the door and tub assembly where replacement is a technician's job rather than a safe DIY fix.
What does the temperature sensor do on a GE dishwasher?
It reports water temperature to the control so the machine knows whether the water is hot enough to wash and dry properly. On many GE models it is part of the flood-switch assembly, which is why a tech may replace both together when C7 turns out to be a real fault.
Will the dishwasher still run with a C7?
It may, but without a reliable temperature reading you can get poor cleaning and wet dishes, and you are running a machine with a known sensor fault. One reset is reasonable; if C7 sticks, it is better to get the sensor sorted.
Related GE codes
- GE Dishwasher C1 Your GE dishwasher is draining, but too slowly for the control's liking — the water path is partly restricted, usually at the air gap, the drain hose, or a disposer that hasn't been run.
- GE Dishwasher C2 Draining ran well past the time GE allows — about seven minutes — pointing to a heavier blockage than the milder C1, though the things to check are the same trio.
- GE Dishwasher C3 The dishwasher didn't drain at all, and GE's first move for C3 is a brief power reset — if water still won't leave afterward, the drain path or pump needs attention.
- GE Dishwasher C4 C4 means the dishwasher refilled twice after a power interruption, which usually traces to a stuck overfill float or a clogged sump rather than anything electrical.
More: all GE dishwasher codes · all GE codes · search by symptom