GE Dishwasher Error Code Htt — How to Fix (Heater timeout)

Field note: Htt is a temperature circuit complaint (NTC / heater / wiring), not a software glitch. On GE Dishwashers measure the sensor out of circuit at room temperature and watch it change when warmed in your hand. Open or dead-short sensors get blamed on ‘the board’ constantly. Prove the NTC before you buy a control.

What this code is not

• Not a vent-clog code on a washer or dishwasher (dryers are different).
• Not a firmware update you download from a forum.
• An NTC that reads OL or 0 Ω is the part — leave the board alone.

If you’re seeing the GE Dishwasher error code Htt, it means your appliance is experiencing a heater timeout issue. This error can cause your dishwasher to malfunction and not complete the wash cycle, leaving you with dirty dishes and a puzzling error message. The Htt error code typically appears during the wash cycle when the dishwasher is unable to heat the water properly.

The Usual Suspects Behind This Code

Here are the common causes of the GE Dishwasher error code Htt, ranked by likelihood:

1. Faulty Heating Element

• Description: The heating element is responsible for warming the water during the wash cycle. A faulty heating element can cause the Htt error code.
• How to verify: Use a multimeter to test the heating element’s resistance. A reading of infinity or a significantly higher resistance than the specified value indicates a faulty heating element.
• Fix difficulty: 7/10
• Cost: $50-$150 (part number: WDTA50SAHZ)

2. Malfunctioning Thermistor

• Description: The thermistor monitors the water temperature and sends signals to the control board. A malfunctioning thermistor can cause the Htt error code.
• How to verify: Use a multimeter to test the thermistor’s resistance. Compare the reading to the specified value in your owner’s manual.
• Fix difficulty: 6/10
• Cost: $20-$50 (part number: WDTA50SAHZ)

3. Control Board Issues

• Description: The control board regulates the dishwasher’s functions, including the heating element. A faulty control board can cause the Htt error code.
• How to verify: Check the control board for signs of wear or damage. Use a multimeter to test the voltage output.
• Fix difficulty: 8/10
• Cost: $100-$300

4. Wiring or Connection Issues

• Description: Faulty wiring or connections between the heating element, thermistor, and control board can cause the Htt error code.
• How to verify: Inspect the wiring and connections for signs of wear or damage. Use a multimeter to test the continuity.
• Fix difficulty: 7/10
• Cost: $20-$100

The Primary Fix — Detailed Guide

The most common cause of the GE Dishwasher error code Htt is a faulty heating element. Here’s a step-by-step guide to replace the heating element:

Safety warnings:

• Unplug the dishwasher from the power outlet before starting the repair.
• Wear protective gloves and safety glasses.

Tool list:

• Phillips screwdriver
• Multimeter
• Needle-nose pliers

Time estimate: 1-2 hours

Step-by-Step Instructions:

1. Access the heating element by removing the lower panel of the dishwasher.
2. Use a multimeter to test the heating element’s resistance. Compare the reading to the specified value in your owner’s manual.
3. Remove the screws holding the heating element in place.
4. Disconnect the wiring harness from the heating element.
5. Remove the old heating element and replace it with a new one (part number: WDTA50SAHZ).
6. Reconnect the wiring harness and replace the screws.
7. Reassemble the dishwasher and plug it back in.

What “fixed” looks like vs “still broken”:

• If the heating element is replaced successfully, the dishwasher should heat the water properly, and the Htt error code should disappear.
• If the error code persists, it may indicate a more complex issue with the control board or wiring.

How This Varies by Model

The GE Dishwasher error code Htt can occur in various GE dishwasher models, but some models are more prone to this issue. Here are some model-specific differences:

• GE GDF550PSDESS: This model is known to have issues with the heating element, which can cause the Htt error code.
• GE GDT580SMNSES: This model has a reputation for having problems with the thermistor, which can also trigger the Htt error code.

Price Range for This Repair

Here’s a breakdown of the estimated costs for repairing the GE Dishwasher error code Htt:

When to fix vs replace:

• If the repair cost is less than 50% of the appliance’s original price, it’s usually worth fixing.
• If the dishwasher is less than 5 years old, it’s likely worth fixing.

Warranty coverage:

• Check your owner’s manual or manufacturer’s website for warranty information.
• Contact GE customer support at 1-800-432-2737 for assistance.

Preventive Care Schedule

To prevent the GE Dishwasher error code Htt from occurring in the future:

• Regularly clean the dishwasher’s filters to ensure proper water flow.
• Check and replace the heating element every 5-7 years.
• Run a cleaning cycle with a dishwasher cleaner every 1-2 months.

Time to Call the Pros?

If you experience any of the following symptoms, it’s best to call a professional:

• The error code persists after trying the quick diagnostic checks and repairs.
• You notice signs of electrical shock or burning smells.
• The dishwasher is not draining properly.

What to expect:

• A professional technician will diagnose the issue and provide a detailed estimate for the repair.
• The repair may take several hours, depending on the complexity of the issue.

How to find a qualified technician:

• Check online reviews and ratings.
• Ask for referrals from friends or family members.
• Contact GE customer support for recommendations.

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• GE Dishwasher FTD Error — Failed to Drain Fix
• GE Dishwasher LF Error — Low Flow Fix (2026)