Bosch Dishwasher E09 Error: Cold Water Fix & Heat Pump Part (#12008381)
Quick Answer: The E09 error code on a Bosch dishwasher means the water heating circuit has failed and the dishwasher is washing with cold water. Because Bosch integrates the heating element directly inside the main circulation motor, fixing E09 requires replacing the Heat Pump Assembly (#12008381 or #00654575).
⚠️ Don't Look for an Exposed Heating Coil at the Bottom: Unlike American dishwashers, Bosch dishwashers do NOT have a visible metal heating ring at the bottom of the tub! The heater is built into the wall of the main circulation pump (#12008381).
#1 Most Common Fix: Bosch OEM Circulation Heat Pump Motor Assembly
Official OEM Part Number: #12008381
⏱️ Install Time: 35 Minutes (Saves $400+ technician bill) | 💰 Avg Cost: $108.00 – $135.00 (Saves $300 service call)
Step 1: Free 2-Minute Reset & Test (Try This First)
Before ordering replacement parts, perform this quick reset sequence to rule out a temporary sensor trip:
- Turn off the dishwasher and unplug it from the wall outlet for 5 minutes to clear any temporary relay glitch.
- Run a normal cycle and open the door after 25 minutes: if the water inside is ice cold and dishes stay wet at the end, the heating track inside the Heat Pump has burned out.
- Replace the Circulation Heat Pump (#12008381) to restore hot water and drying.
Step 2: 60-Second Symptom & Part Number Lookup Table
Match your exact Bosch E09 symptom below to get the factory replacement part number:
| What You Are Seeing (Symptom) | Required OEM Part & Number | Difficulty & Cost | Direct Part Link |
|---|---|---|---|
| Dishes come out wet and cold; E09 displays at the end of the wash cycle (Newer Bosch models) Cause: Burned-out heating coil inside the integrated Heat Pump |
Bosch OEM Heat Pump Assembly#12008381 |
Moderate DIY (35 min) Est: $118.00 |
Check Price on Amazon → |
| Older Bosch / Siemens models (pre-2015) showing E09 with cold water Cause: Failed 1st-Gen Integrated Heat Pump |
Bosch Heat Pump Kit (Large Housing)#00654575 |
Moderate DIY (40 min) Est: $129.00 |
Check Price on Amazon → |
Frequently Asked Questions (Bosch E09)
Can I still use my Bosch dishwasher with error code E09?
Running the dishwasher with E09 will not cause a flood, as it only means the heater coil is open-circuited. However, cold water will not dissolve detergent tablets properly or sanitize dishes.