E38
Bosch Dishwasher
Severity: ModerateWhat Does This Error Mean?
The E38 error on a Bosch dishwasher indicates a circulation pump fault — the pump that circulates water through the spray arms has a problem. Without the circulation pump running correctly, water cannot reach the dishes and the wash cycle cannot complete.
Affected Models
- SHPM88Z75N
- SHPM65Z55N
- SHEM63W55N
- SHDX5EM3N
- Most Bosch 500, 800 series dishwashers
Common Causes
- Circulation pump impeller is jammed by a small piece of glass, bone, or debris
- Circulation pump motor has failed electronically
- Foreign object blocking water flow to the circulation pump
- Wiring harness to the circulation pump is loose or damaged
- Control board fault causing the pump not to receive power
How to Fix It
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Cancel the cycle and remove any standing water from the tub.
Use a sponge or towels to empty the tub so you can inspect the filter area.
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Remove and thoroughly clean the drain filter and sump area.
Sometimes debris bypasses the filter and reaches the circulation pump. Cleaning everything in this area is the starting point.
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Check the spray arms — remove them and make sure the holes are not blocked.
Blocked spray arm nozzles can sometimes cause the circulation pump to strain and trigger E38. Rinse spray arms under the tap.
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Reset the dishwasher by turning off the circuit breaker for 5 minutes.
A power reset sometimes clears a temporary pump fault caused by a brief obstruction or electrical glitch.
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If E38 returns after the reset, call a technician to inspect the circulation pump.
The technician will check for obstructions in the pump and test the motor. If the motor has failed, the pump assembly needs replacement.
When to Call a Professional
Circulation pump issues almost always require a technician. Accessing the pump requires pulling the dishwasher out of the cabinet and removing the sump assembly. Expect repair costs of $150–$300 for a pump replacement.
Frequently Asked Questions
What does the circulation pump do in a Bosch dishwasher?
The circulation pump draws water from the sump and pumps it up through the spray arms at high pressure. This is what makes the water spray up and clean the dishes. Without the circulation pump running, water just sits in the bottom of the tub and nothing gets cleaned.
How long does a Bosch dishwasher circulation pump last?
A Bosch circulation pump is designed to last 10–15 years under normal use. However, running the dishwasher without cleaning the filter regularly can lead to debris reaching the pump and shortening its life. Premature failures are almost always caused by maintenance neglect.
Can I hear if the circulation pump is running?
Yes — you should be able to hear the pump humming and water swishing around inside during a wash cycle. If the dishwasher is silent after starting (no humming, no water sounds), the pump may not be getting power. If you hear a humming but no water movement, the impeller is likely jammed.