# How to Fix GE Error E12 (Exhaust Temperature High)
If your GE washing machine displays the E12 error code, it means the internal safety systems have detected that the air exiting the drying drum is operating at an excessively high and potentially dangerous temperature. This guide will help you diagnose and resolve the issue.
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## What Does GE Error E12 Mean?
The E12 code is a crucial safety indicator. It signifies **Exhaust Temperature High**.
In plain English, the internal sensor (usually the high-limit thermostat) has registered that the temperature of the air being exhausted from the dryer portion of the machine exceeds the safe operational limit (often around 350°F or higher).
When this sensor trips, the machine shuts down the heating element and displays E12 to prevent overheating, damage to the clothes, and, most importantly, fire.
**The two primary causes for this error are:**
1. **Poor Airflow:** A blockage prevents the hot, moist air from escaping, causing heat to build up internally.
2. **Failed Component:** The **Dryer Thermostat** (High-Limit Cut-Off) has failed, tripping too early, or the main Heating Element is running continuously due to a control board issue.
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## Step-by-Step Guide to Diagnosing and Fixing E12
Before attempting any repairs, **UNPLUG THE MACHINE** from the wall outlet to prevent shock.
### Step 1: Check for Airflow Blockages (The Easiest Fix)
Restricted airflow is the most common cause of high exhaust temperatures.
1. **Clean the Lint Filter:** Remove the lint filter and clean it thoroughly under running water if necessary, ensuring all residue is gone.
2. **Inspect the Vent Hose:** Locate the large metal or foil hose attached to the back of the machine.
* Ensure the hose is not crushed, kinked, or bent sharply.
* Detach the hose from the wall and the machine and look inside. Remove any large lint clogs or debris.
3. **Check the Exterior Vent Cap:** Go outside to where the dryer vents. Ensure the exterior vent cap flap is opening fully when the machine runs and is not obstructed by debris, snow, or bird nests.
### Step 2: Reset the Machine
After clearing any blockages, perform a hard reset:
1. Leave the machine **unplugged** for at least 5 minutes.
2. Plug the machine back in.
3. Run a short, low-heat cycle. If the error returns quickly, proceed to Step 3.
### Step 3: Test the Dryer Thermostat (Likely Culprit)
The component most likely to fail or trigger this error is the **High-Limit Thermostat** (also called the Thermal Cut-Off Fuse). This fuse is usually located near the heating element housing or the blower wheel assembly at the rear of the unit.
***(Requires a Multimeter and familiarity with appliance repair.)***
1. **Access the Components:** Pull the machine away from the wall and remove the back panel (usually held on by several screws).
2. **Locate the Thermostat:** Identify the high-limit thermostat. It typically looks like a small, coin-sized disc with two wires attached to it.
3. **Test for Continuity:**
* Disconnect the wires attached to the thermostat.
* Set your multimeter to the Rx1 setting (resistance/ohms).
* Place the multimeter probes on the two terminals of the thermostat.
* **Result Check:**
* **Good:** You should hear a beep or register close to zero ohms (showing **continuity**).
* **Bad:** If the multimeter shows **no continuity** (OL/Infinity reading), the thermostat has blown or tripped and needs to be replaced.
If the thermostat tests faulty (open circuit), replacing this part should resolve the E12 error.
### Step 4: Check the Heating Element
If the thermostat tests fine, the heat may be excessively high because the heating element is cycling constantly and not turning off when it should.
1. **Check Continuity:** With the wires removed, test the heating element itself. It should show low resistance (typically 10-25 ohms).
2. **Check for Grounding:** Test the terminals of the heating element against the metal body of the element. If you register continuity, the element is grounded, causing it to overheat, and must be replaced.
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## Part Replacement
If your diagnosis confirms a failed safety component, you will need to replace the thermostat specific to your GE model.
Check the price for a replacement Dryer Thermostat here: https://www.amazon.com/s?k=GE+Dryer+Thermostat&tag=trivian-20
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