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Bosch·Dishwasher (Gaggenau)medium severity
Bosch Dishwasher (Gaggenau) Error Code F3
Temperature sensor error
Common Causes
- 1NTC sensor failure
- 2Sensor wiring issue
- 3Sensor out of range
Step-by-Step Troubleshooting
- 1
Disconnect power and locate NTC sensor in the sump area
- 2
Measure sensor resistance at room temperature (expect 10-15k ohms at 70F)
- 3
Check for corrosion at sensor connector — sump area is high-moisture
- 4
Verify sensor wiring continuity from sensor to control board
Pro Diagnostic Tip
F3 is the Gaggenau NTC temperature-sensor fault — the board has lost a trustworthy water-temperature reading and pads the cycle to stay safe. Gaggenau NTC sensors use the same BSH spec as Bosch (a 10k ohm NTC type reading near 2.5k ohms at a 150F wash), and the sump is a high-moisture spot so a corroded connector fakes an out-of-range reading. If the value drifts but never fully opens or shorts, the sensor is degrading — replace it proactively. Note this is the sensing side, not the heating side that F4 covers.
You Might Also Notice
- •Water never heats to the selected temperature
- •Cycle runs far longer than normal
- •Dishes are not sanitized and the sanitize light stays off
- •Intermittent fault that clears after a connector reseat
- •Temperature readings jump around between cycles
Parts, Cost & Difficulty
Repair Difficulty
Moderate — Some Experience NeededEstimated Repair Cost
$120–$250
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
12-009-872-003 (NTC temperature sensor, sump)BSH0000672 (sensor wiring harness)
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
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Frequently Asked Questions
What does Bosch error code F3 mean?
Bosch error code F3 indicates: Temperature sensor error. This is a medium-severity issue affecting your dishwasher (gaggenau).
How do I fix Bosch error code F3?
Disconnect power and locate NTC sensor in the sump area Then, Measure sensor resistance at room temperature (expect 10-15k ohms at 70F) Then, Check for corrosion at sensor connector — sump area is high-moisture 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 F3?
Besides the error code on the display, common signs include: Water never heats to the selected temperature; Cycle runs far longer than normal; Dishes are not sanitized and the sanitize light stays off. If you notice any of these symptoms, check your dishwasher (gaggenau)'s display panel for error code F3.
How much does it cost to fix Bosch F3?
Repair costs for Bosch F3 typically range from $120 to $250 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.
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