Bosch Dishwasher Error E09

⚡ Quick Answer: The Bosch dishwasher E09 error code signifies a malfunction in the water heating system, often due to a faulty heating element or temperature sensor. ... ✅ DIY Fixable

What Does Error E09 Mean?

The Bosch dishwasher E09 error code signifies a malfunction in the water heating system, often due to a faulty heating element or temperature sensor. Symptoms include the dishwasher displaying the E09 code, water remaining cold during cycles, and dishes coming out dirty or not dry. This error typically indicates that the water is not reaching the necessary temperature for effective cleaning, leading to incomplete cycles or unsatisfactory results.

Common Symptoms:

  • Dishwasher displays E09 code during or after cycle.
  • Water remains cold throughout wash cycle.
  • Dishwasher may stop mid‑cycle or fail to complete heating.
  • Dishes come out dirty or not dry.

Possible Causes

  • Faulty heating element (medium)
  • Temperature sensor or wiring issues (medium)
  • Mineral buildup or scale on heating components (medium)

How to Fix Error E09

DIY Fix Basic safety and reset

  1. Disconnect power to the dishwasher by unplugging or switching off circuit breaker.
  2. Wait a few minutes then restore power to attempt a reset.

DIY Fix Check for simple blockages and maintenance

  1. Clean filters and spray arms to ensure proper water circulation.
  2. Check for limescale or visible debris around the bottom of the tub.

Technician Only Test and replace heating components

  1. Test the heating element for continuity with a multimeter.
  2. Inspect temperature sensor and wiring harness for faults.
  3. Replace the heating element or sensor if defective.

Parts needed: Heating element, Temperature sensor, Wiring harness

🛑 When to Call a Pro:
  • If the E09 error persists after basic checks and resets.
  • If inspection reveals damaged wiring, control board issues, or complex component failure.

Technical Specifications

wattage 50W
component Drain Pump
resistance 10-20 ohms
part_number 00430063
voltage_rating 120V AC

Common Questions

What does E09 error mean on Bosch dishwasher?

E09 indicates a heating system malfunction, resulting in cold water and dirty dishes.

Can I fix Bosch dishwasher E09 error myself?

Yes, start by resetting the dishwasher and checking for blockages or mineral buildup.

How much does it cost to fix E09 error?

Repair costs typically range from $100 to $300+, depending on parts and service rates.

When should I call a technician for E09?

Call a technician if the error persists after troubleshooting or if wiring issues are found.

Sources & References

Data last verified: 2026-01-16

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