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Bosch·Dishwasher (Gaggenau)high severity
Bosch Error Code E08
Heating / temperature control error
Common Causes
- 1Heating element failure
- 2Temperature sensor fault
- 3Control board issue
Gaggenau units installed in custom cabinetry may have restricted airflow around the base. Overheating control boards due to poor ventilation can mimic E08. Verify cabinet ventilation slots are not blocked.
Step-by-Step Troubleshooting
- 1
Check if water temperature reaches target — run a cycle and feel the door after 10 minutes
- 2
Measure heater resistance (10-20 ohms) and NTC sensor (10-15k ohms at room temp)
- 3
Inspect control board for burnt heater relay contacts
- 4
Verify water is circulating — a stuck pump prevents water from reaching the flow-through heater
Pro Diagnostic Tip
E08 on Gaggenau indicates the board detected a mismatch between heater power output and temperature rise rate. This can be caused by a partially working heater (one element of a dual-element heater failed) that still reads correct resistance but delivers only half the wattage. Measure current draw during heat phase — should be 8-10A at 120V.
You Might Also Notice
- •Wash cycle takes much longer than normal
- •Sanitize indicator does not illuminate
- •Water lukewarm at cycle end
Parts, Cost & Difficulty
Repair Difficulty
Hard — Advanced Skills RequiredEstimated Repair Cost
$250–$500
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
12-014-872-003 (flow-through heater)12-009-872-003 (NTC sensor)12-005-668-003 (control board)
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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Get Professional Help Now
Error code E08 is a high-severity issue that can cause further damage to your dishwasher (gaggenau) if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does Bosch error code E08 mean?
Bosch error code E08 indicates: Heating / temperature control error. This is a high-severity issue affecting your dishwasher (gaggenau).
How do I fix Bosch error code E08?
Check if water temperature reaches target — run a cycle and feel the door after 10 minutes Then, Measure heater resistance (10-20 ohms) and NTC sensor (10-15k ohms at room temp) Then, Inspect control board for burnt heater relay contacts There are 1 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my dishwasher (gaggenau) has error E08?
Besides the error code on the display, common signs include: Wash cycle takes much longer than normal; Sanitize indicator does not illuminate; Water lukewarm at cycle end. If you notice any of these symptoms, check your dishwasher (gaggenau)'s display panel for error code E08.
How much does it cost to fix Bosch E08?
Repair costs for Bosch E08 typically range from $250 to $500 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.