ERROR CODE · BOSCH REFRIGERATOR · ORANGE COUNTY
Bosch Refrigerator Error Code E3
Freezer-side temperature sensor secondary fault (on some Bosch models).
What E3 means.
E3 on certain Bosch firmware versions flags a secondary freezer-temperature sensor fault — the evaporator-coil sensor that controls defrost cycle timing. With E3 active the controller cannot tell when frost has cleared and falls back to a backup defrost timer. Over a few weeks frost builds on the coil and airflow drops. E3 is less common than E1/E2 because not all Bosch models have a separate evaporator sensor — some use the freezer thermistor for both jobs.
Most common causes.
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Evaporator sensor failed.
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Wire harness chafed.
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Connector corroded.
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Sensor crushed by frost during a previous event.
Try this first — safe DIY troubleshooting.
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Turn off at the breaker for 10 minutes.
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Restore power and watch for E3 to either clear or return.
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If E3 persists, schedule a diagnostic — the rear evaporator panel may need removal.
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Watch for frost build-up at the back of the freezer compartment.
What does this repair cost?
Typical part cost
$50–$130
Full repair (parts + labor)
$320–$520
Time on site
60–90 min
Prices reflect 2026 OEM part costs for the Orange County market. Diagnostic is $65, waived when you authorize the repair. 3-month warranty on parts and labor; 6–12 months on compressor and sealed-system work.
Three steps. No surprises.
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Book in 2 minutes.
Pick your symptom and a time window. We confirm by text.
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Diagnose in 60 minutes.
We arrive in a marked van, diagnose the issue, and quote the repair before we touch a screw. $65 diagnostic fee — waived if you say yes to the repair.
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Fix it today, when we can.
Most repairs finish in the same visit because parts ride on the truck. Every job carries a 3-month warranty (6–12 months on compressor work).
What your neighbors said this month.
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I couldn't recommend this company more highly. I have used them several times and found Ivan to be knowledgeable, responsive, honest and courteous. He has saved me from buying a new refrigerator twice and unlike so many vendors, he is always able to diagnose the problem quickly and always knows how to fix it. If you want someone reliable who truly knows his craft and is always fair and reasonable, call We Fix Fridges!
Yelp · Verified -
We have used this company several times now. I wanted to leave a review because Ivan really went above and beyond for this last repair the day before a big holiday weekend. He saved us! 100% recommend him. Besides being so knowledgeable which helps with diagnosis to repairs he is courteous and timely and we have found his prices to be very fair. It's hard to find a trustworthy reliable repair person. We have Ivan on text now!
Yelp · Verified -
Highly recommended. Been in business with Ivan 3 different times with different appliances and all were satisfactory with problem fixed. He even figured out an indirect minor issue and fixed it for us with no charge without us asking for it. Ivan will be the first one I call in any cases of an appliance that needs repair.
Yelp · Verified
Don't wait — Bosch E3 usually gets worse.
We diagnose in 60 minutes, quote in writing, and most repairs finish on the first visit. OEM parts on the truck.