Error Code: NTC (TEMPERATURE SENSOR) FAULT Difficulty: Hard
Problem: Indicates a fault with the NTC (Negative Temperature Coefficient) thermistor, which is the temperature sensor.
How to Fix NTC (TEMPERATURE SENSOR) FAULT Error (Step-by-Step)
- Disconnect Power and Water: Unplug the dishwasher from the electrical outlet and shut off the water supply valve, typically located under the sink. Place a towel under the water supply line connection to catch any residual water before disconnecting it.
- Remove the Dishwasher: Open the dishwasher door and remove the mounting screws that secure the dishwasher to the underside of the countertop. Carefully slide the dishwasher out from its cabinet. It’s helpful to have a second person to help guide it.
- Access the Sump: Gently tilt the dishwasher onto its back on a soft, protected surface like a blanket. This will give you access to the components underneath. The NTC temperature sensor is located in the sump assembly, which is the plastic basin at the bottom.
- Locate and Remove the Sensor: The NTC sensor is a small probe that inserts into the side of the sump. It will have a wire harness connected to it. Carefully disconnect the wire harness. The sensor is usually held in place by a retaining clip or by a simple twist-and-lock mechanism. Rotate it counter-clockwise to release and pull it out.
- Install the New Sensor: Lightly lubricate the O-ring on the new sensor with a small amount of rinse aid or water to ensure a good seal. Insert the new sensor into the port and turn it clockwise to lock it into place. Reconnect the wire harness securely.
- Reassemble and Reinstall: Carefully tilt the dishwasher upright. Slide it back into the cabinet, ensuring the drain hose and water line are not kinked. Secure the dishwasher to the countertop with the mounting screws.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
What to Check Next on This Bosch Dishwasher
Bosch Dishwasher Error NTC (TEMPERATURE SENSOR) FAULT: Use the code, light, or symbol as the starting clue, then confirm what the dishwasher actually does before ordering parts.
- 1. Turn power off before opening panels, reaching into the sump, touching wiring, or checking the pump, heater, valve, sensor, latch, or control area.
- 2. Confirm whether the display is a normal cycle/status symbol or a recurring fault that interrupts filling, washing, draining, drying, locking, or control response.
- 3. Start with the heat and temperature path: water circulation, heater circuit, NTC sensor, wiring, and control output.
- 4. Clean the filter and sump, check spray-arm movement, verify water supply, inspect the drain hose and sink connection, and correct any visible blockage before replacing parts.
- 5. Run a short test cycle and watch where it fails; the exact stage matters more than the displayed word or symbol by itself.
- 6. Replace a part only after the same symptom repeats and the model-specific checks point to that part category. Match any replacement to the complete Bosch model number on the door tag.
If the issue returns after these checks, match replacement parts to the complete Bosch dishwasher model number from the door tag. The same display clue can point to different components depending on the exact model and when the failure appears.
Recommended Parts to Check
No exact official OEM part number is listed here because the correct Bosch dishwasher part can vary by complete model number. These are targeted part-category searches, not universal fit claims.
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Bosch dishwasher water inlet valveCommon replacement category: Water inlet valveFit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for fill and water-supply faults after the tap, hose, and inlet screen are checked. -
Bosch dishwasher drain pumpCommon replacement category: Drain pumpFit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for drain and standing-water symptoms after the filter, sump, and hose are checked. -
Bosch dishwasher circulation pumpCommon replacement category: Circulation pump / wash motorFit note: Exact OEM part number varies by full Bosch dishwasher model number. Confirm compatibility before buying.Confidence: Medium
This category can be relevant for wash, spray-arm, and circulation symptoms after filters and spray arms are checked.
Before ordering: match the part to the complete Bosch dishwasher model number on the appliance tag.
When It’s Better to Replace Than Repair
Dishwasher repairs can add up quickly when the pump, control, heater, or leak-related parts fail.
Confirm cabinet width, water line, drain routing, electrical connection, and panel style before ordering.
For repair parts, verify exact fit with the full dishwasher model number before buying; these links are general replacement-appliance shopping options.
- [OK]Drain pump or circulation pump failure
- [OK]Leaking tub, door, or float-switch issues
- [OK]Heater or control failures on an older unit
- [OK]Repeated poor washing or drying performance
Recommended Dishwasher Replacement Options
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Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
More options (for a better recommendation)
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Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →Browse all Bosch error codes: Bosch Error Codes
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