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Appliance Error Codes

Bosch WGB24600UC E02 Error Code | E02 Heating Error

Error e02 on Bosch wgb24600uc: Heating error — wash water did not reach the target temperature within the allot. Follow the troubleshooting steps below to diagnose and fix this washer issue. ## What Does E02 Mean on a Bosch WGB24600UC? Your Bosch washing machine is displaying an E02 error code, which indicates that the wash water failed to reach the programmed temperature within the allowed time. This means the heating element may have failed, the temperature sensor (NTC) is providing an incorrect reading, or the control board is not supplying power to the heater. E02 can also appear if the water supply is so cold that the heating system cannot compensate (in extreme ambient conditions). ## Fault Details | Field | Value | |-------|-------| | Error Code | E02 | | Appliance | Bosch WGB24600UC 500 Series 24-inch Front Load Washer | | Fault Type | Heating error | | Severity | Medium | | User Serviceable | No — professional service recommended | | Applicable Models | WGB24600UC, WGB246AXUC, WQB245AXUC | ## Common Causes - Heating element failure — element coil has burned out or broken

  • NTC temperature sensor fault — sensor providing incorrect resistance reading to the control board
  • Scale build-up on the heating element reducing heat transfer efficiency
  • Control board heater relay or triac failure — not supplying voltage to the heating element
  • Wiring harness to the heating element or NTC sensor damaged or disconnected
  • Very cold inlet water supply combined with a weak heater (less common) ## Step-by-Step Troubleshooting | Step | Action | What To Do | Expected Result | |------|--------|------------|-----------------| | 1 | Reset the washing machine | Turn off the washer at the power button. Unplug it from the wall for 5 minutes, then reconnect. Select a hot wash cycle and observe whether the drum becomes warm after 20–30 minutes | Drum is noticeably warm — heater is working; E02 was a transient fault | | 2 | Run a cleaning cycle with descaler | Severe limescale build-up on the element reduces heating efficiency. Run a drum cleaning cycle with a Bosch-approved descaler or washing machine cleaner on the hottest available setting. Scale layers can prevent the element from transferring heat to the water | Cycle completes without E02 after descaling | | 3 | Check the NTC temperature sensor | A Bosch technician can measure the NTC sensor resistance with a multimeter. At room temperature (~25°C), the NTC should read approximately 5–10 kΩ depending on the model. Open circuit (OL) or very low resistance (near 0 Ω) confirms sensor failure | Sensor reads within expected range — heater or board is the fault source | | 4 | Test the heating element | With the machine unplugged and element connector disconnected, a technician can measure heating element resistance — typically 25–50 Ω for a Bosch front-load washer heating element. An open circuit (OL) confirms element failure | Element reads within 25–50 Ω; OL reading confirms replacement needed | | 5 | Contact Bosch service for heating element replacement | Heating element replacement in a Bosch front-load washer requires removing the washer’s front panel and reaching components behind the drum. Contact Bosch customer service at 1-800-944-2904 for professional service | E02 resolved after heating element or NTC sensor replacement | ## Frequently Asked Questions ### Will my clothes still wash with E02? The washer will attempt to continue the cycle even with E02, but without heated water, hot wash programs will run at a lower effective temperature. For heavily soiled items, whites, or hygiene-sensitive laundry, the wash effectiveness is significantly reduced. Repair the heater before relying on hot wash programs. ### Can hard water cause E02? Yes. In hard water areas, limescale coats the heating element, acting as an insulator that reduces heat transfer into the water. Heavy scale build-up can cause E02 even if the element itself is functional. Bosch recommends using dishwasher salt in the built-in water softener and regular use of Bosch washing machine descaler. ### Is the NTC sensor the same as the heating element? No. The NTC (Negative Temperature Coefficient) sensor is a small thermistor that measures water temperature and reports to the control board. The heating element is the actual resistive wire that generates heat. Both can independently cause E02 — the sensor reports that temperature has not been reached, which could mean the heater didn’t heat or the sensor failed to detect the heat. ### How much does Bosch washer heating element replacement cost? Bosch washer heating elements typically cost for parts. With professional labor, total repair cost is . NTC sensors are cheaper at . Bosch 800 Series parts may be higher. For machines over 8 years old, compare repair cost against the value of the machine. --- Source: Bosch 500 Series 24-inch Front Load Washer service documentation. Last Updated: March 2026 ### Is it safe to keep using my Bosch wgb24600uc with error e02? If error e02 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the washer with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error e02 on a Bosch wgb24600uc? Repair costs for error e02 on the Bosch wgb24600uc washer depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Bosch-authorized service provider for an accurate estimate based on your specific situation. ### What does error code e02 mean on a Bosch washer? Error code e02 on Bosch washer models indicates Heating error — wash water did not reach the target temperature within the allotted time. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue. ### Is it safe to keep using my Bosch wgb24600uc with error e02? If error e02 does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the washer with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error e02 on a Bosch wgb24600uc? Repair costs for error e02 on the Bosch wgb24600uc washer depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a Bosch-authorized service provider for an accurate estimate based on your specific situation. ### What does error code e02 mean on a Bosch washer? Error code e02 on Bosch washer models indicates Heating error — wash water did not reach the target temperature within the allotted time. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.