Bosch Dishwasher serious

E09 Heating element failure - heater not working

The Bosch E09 error code on your dishwasher indicates: Heating element failure - heater not working. This typically requires troubleshooting the heating system.

Reported on: SHPM88Z75NSHP878ZD5NSHE3AR76UC
Diagnosis

What Causes This Error

1

Heating element burned out

high

The dishwasher's flow-through heater has failed — it can no longer heat water for washing or drying.

2

Water temperature sensor fault

medium

The NTC thermistor reads incorrectly, so the control board doesn't activate or shuts off the heater prematurely.

3

Control board relay failure

medium

The relay on the control board that supplies power to the heater has failed.

4

Wiring or connector issue

low

A wire between the board and heater is burned, corroded, or disconnected.

Repair Guide

How to Fix Error E09

  1. 1

    Power cycle the dishwasher

    Turn off the circuit breaker for 5 minutes, then turn it back on. This resets the control board.

  2. 2

    Check if dishes are coming out cold

    Run a normal wash cycle. If dishes are cold and wet at the end (no drying heat), the heater has likely failed completely.

  3. 3

    Test the heating element

    Disconnect power. Access the heater from underneath (remove kick plate) or pull the dishwasher out. Test with a multimeter — it should read 10-30 ohms. Infinite resistance means it's burned out.

    Always disconnect power at the breaker before accessing internal components.
  4. 4

    Inspect wiring and connectors

    Check the wire terminals at the heater for burns, melting, or corrosion. Damaged connectors are a common secondary failure.

  5. 5

    Replace the heating element

    If the heater tests open, order a replacement for your model. Bosch dishwashers use a flow-through heater in the sump — it typically requires removing the base plate to access.

When to Call a Professional

If the heater tests fine but water still isn't heating, or if you're uncomfortable pulling the dishwasher out for access

  • The heater in Bosch dishwashers is integrated into the sump and can be tricky to replace
  • Control board relay failures require board-level diagnosis
  • Water connections must be properly resealed to prevent leaks
Video Repair Guide Search "Bosch dishwasher error E09 fix"

Models Affected

SHPM88Z75NSHP878ZD5NSHE3AR76UC