# How to Fix GE Error E03 (Inlet Thermistor Shorted)
The GE E03 error code is a critical diagnostic fault that prevents the washing machine from operating. While the term “Inlet Thermistor” often suggests a water temperature issue, this code frequently relates to the thermal management components used in advanced cycles, such as steam or dry functions, depending on your GE model.
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## 1. Explanation: What GE Error E03 Means
The E03 error code indicates an **Inlet Thermistor Shorted** condition.
In simple terms:
* **Thermistor Function:** A thermistor is a sensor used by the washer’s main control board (CCU) to monitor temperature. It changes its electrical resistance based on how hot or cold it is.
* **The Problem:** A “shorted” thermistor means the resistance detected by the CCU is zero (0 Ohms) or extremely low. The control board interprets this as a fault in the temperature-sensing circuit, resulting in the E03 error and immediately stopping the wash cycle to prevent potential overheating or damage.
* **The Likely Culprit:** In GE washing machines that produce this specific fault, the issue is commonly traced to the **Dryer Thermistor** (which functions as the inlet thermistor for the steam or drying system).
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## 2. Step-by-Step Fix: Diagnosing and Replacing the Dryer Thermistor
**⚠️ SAFETY FIRST:** Always unplug your washing machine from the power outlet before beginning any inspection or repair. Failure to do so can result in severe electrical shock.
### Step 1: Access the Thermistor Location
The location of the Dryer/Inlet Thermistor varies slightly by model, but it is typically located near the inlet water valve assembly, the steam dispenser, or attached to the blower/heater housing (especially on combo units).
1. **Preparation:** Pull the washer away from the wall to give yourself working room.
2. **Access Panel:** Depending on your model, you may need to remove the top panel or the rear access panel to gain visibility of the internal components.
3. **Locate the Part:** Identify the wire harness leading to the **Dryer Thermistor**. This is a small, typically black or white component with two wires attached to it.
### Step 2: Visual Inspection
Before testing, look closely for obvious signs of damage:
* **Corrosion:** Check the connection points where the wires plug into the thermistor. Corrosion or mineral deposits can cause a short.
* **Burned Wires:** Look for melted or charred plastic insulation on the wiring harness immediately surrounding the thermistor. If the wires are burned, they may be touching, causing the short.
* **Loose Connection:** Ensure the wiring harness is firmly seated on the thermistor prongs.
### Step 3: Test Resistance Using a Multimeter
The most accurate way to confirm a shorted thermistor is by testing its resistance (Ohms).
1. **Disconnect:** Carefully disconnect the wiring harness from the thermistor.
2. **Set Multimeter:** Set your multimeter to the resistance setting (Ω – Ohms). Start with the 20k Ohm setting.
3. **Test:** Place one multimeter probe on each of the thermistor’s terminals.
#### Interpreting the Results:
| Multimeter Reading | Diagnosis | Action |
| :— | :— | :— |
| **0 Ohms** (or near zero) | **Confirm Shorted Circuit.** The sensor is defective and is causing the E03 error. | Proceed to Step 4 (Replacement). |
| **Open Loop** (OL or 1 on the screen) | **Confirm Open Circuit.** The sensor is defective, but this is less common for E03. | Proceed to Step 4 (Replacement). |
| **Normal Resistance** (e.g., 8,000–12,000 Ohms at room temperature) | The thermistor is likely functional. | Check the wiring harness leading back to the control board for shorted or damaged wires. |
### Step 4: Replace the Defective Thermistor
If your multimeter confirmed a 0-Ohm reading (a short):
1. **Remove:** Carefully unclip or unscrew the old Dryer Thermistor from its housing.
2. **Install:** Install the new replacement thermistor, ensuring it fits snugly into its mounting location.
3. **Reconnect:** Reattach the original wiring harness.
4. **Test Cycle:** Reassemble the washer panels, plug the machine back in, and run a short test cycle. The E03 code should be cleared.
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## 3. Replacement Part
If the diagnosis confirmed the thermistor is shorted, you will need to replace the part.
Check the price for a replacement Dryer Thermistor here: https://www.amazon.com/s?k=GE+Dryer+Thermistor&tag=trivian-20
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