Modern Bosch washing machines are designed with smart diagnostic systems that identify faults before they cause serious damage. One such group of errors is the E60–E69 range, which signals problems with the appliance’s heating circuit. When these codes appear, your washer may stop mid-cycle or wash with cold water instead of reaching the selected temperature.

While some minor issues can be addressed with a simple reset, most Bosch heating circuit faults require expert diagnosis to ensure safe and effective repair. Let’s take a closer look at what the E6x errors mean, their causes, and how to fix them.

Understanding the Bosch E60–E69 error range

The E60–E69 error codes refer to a set of heating-related faults that affect how your Bosch washing machine heats and regulates water temperature. These codes are common across many Bosch models, from front-load to high-efficiency series.

What They Mean

Bosch washers use a heating element to warm the water and an NTC temperature sensor (thermistor) to monitor temperature during each wash cycle. When any part of this circuit fails — whether due to wiring damage, component burnout, or control module malfunction — the machine logs an E6x code to prevent overheating or unsafe operation.

Each sub-code (E61, E62, E63, etc.) may point to a different fault within the same system:

• E60 / E61 – Heating element not activating or open circuit.
• E62 / E63 – Heating element shorted or overheating.
• E64 / E65 – Temperature sensor (NTC) malfunction.
• E66–E69 – Control board or relay fault affecting heating performance.

In all cases, the issue prevents the washer from properly controlling water temperature, leading to poor cleaning performance or interrupted cycles.

Common causes of Bosch E60–E69 errors

Several electrical and mechanical problems can trigger a Bosch washing machine E60 error or related E6x codes:

• Faulty Heating Element
  A broken or burnt-out element cannot heat the water. Over time, mineral buildup can cause overheating and failure.

• Defective NTC Temperature Sensor
  The sensor may send incorrect readings to the control board, causing the machine to misjudge temperature and trigger a fault.

• Wiring or Connection Issues
  Loose, corroded, or damaged connectors interrupt the circuit between the heater, thermistor, and control unit.

• Control Module Failure
  The electronic control board may misinterpret signals, fail to send voltage to the heater, or shut down heating entirely.

• Limescale Buildup
  Hard water minerals form thick deposits on the element, reducing heat transfer efficiency and causing overheating.

• Power Surges or Moisture Intrusion
  Fluctuating voltage or damp conditions can damage internal circuits and sensors.

Typical symptoms

• The washer completes cycles with cold water.
• Programs take unusually long or stop mid-cycle.
• Bosch washing machine not heating water even on hot settings.
• Repeated display of E60–E69 codes despite resets.

Step-by-step troubleshooting

Before calling a professional, you can try a few safe steps to rule out temporary faults:

1. Unplug and Reset the Washer
   Disconnect the appliance for at least five minutes to reset the control electronics. Plug it back in and restart the program.

2. Check Water Temperature During a Wash
   Run a short cycle on a warm or hot setting. If the water remains cold, the heating circuit is likely inactive.

3. Inspect for Limescale or Corrosion
   If accessible, check around the heater area for visible scale buildup or burnt marks. Heavy deposits may require professional cleaning or replacement.

4. Run Diagnostic Mode (If Available)
   Many Bosch models include a service mode that identifies specific sub-codes (E61, E62, etc.) to pinpoint which heating component is faulty. Consult your user manual for instructions.

5. Call a Certified Bosch Technician
   If the error reappears after a reset, professional service is essential. Technicians use multimeters to test resistance values in the heater and thermistor to confirm the fault.

⚠️ Safety Warning: The heating circuit operates on high voltage. Never disassemble internal panels or handle wiring unless you are a trained professional.

Professional repairs and when to call for help

Persistent Bosch heating circuit faults such as E60, E62, or E65 typically require replacement of key electrical parts. Professional technicians can:

• Test the heating element, thermistor, and relay connections.
• Replace burnt or open-circuit components using genuine Bosch parts.
• Reprogram or replace the control module if voltage output is inconsistent.

It’s best to contact a Bosch washing machine repair service as soon as these codes appear. Prompt repairs prevent electrical hazards, overheating, or permanent damage to the main PCB.

Prevention tips

You can reduce the risk of Bosch temperature sensor problems and heating faults with regular care:

• Use a descaler every 2–3 months if you live in a hard-water area.
• Avoid overloading the drum to ensure proper water flow and heat distribution.
• Keep the machine dry and well-ventilated to prevent moisture from reaching electronic components.
• Schedule annual maintenance with an authorized Bosch technician to check wiring and insulation.

Preventive maintenance extends the life of both the heating element and the control electronics.

Conclusion

The Bosch washing machine E60–E69 error codes indicate heating circuit or temperature control problems, often caused by a faulty element, thermistor, or wiring issue.

While unplugging and resetting the washer can occasionally clear minor glitches, persistent E6x codes almost always require professional Bosch washer repair.

If your Bosch washing machine is not heating water, don’t wait—contact a Bosch washing machine repair service for a reliable diagnosis and safe repair that restores optimal performance.