Name: Dara Appliance Repair LLC
Address: 2115 West Farwell, Chicago, IL, 60645
Telephone: (773) 377-4212
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Dishwasher Showing an Error Code? Here's Exactly How We Diagnosed and Fixed One in Chicago

A step-by-step look at a real dishwasher repair, from a flashing error code to a normal cycle

An error code on the display gets treated like a death sentence for the appliance more often than it should be. Codes point to a system, not always a part, and in this case the fix was smaller than the code made it look. Here is the exact diagnostic process our certified technicians used to trace the code back to its actual source, fix it in a single visit, and clear the fault for good.

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Case Snapshot

Symptom

Dishwasher stopping mid-cycle and displaying a recurring error code

Appliance

Built-in dishwasher

Location

Chicago

Diagnosis

Faulty water temperature sensor sending an inaccurate reading to the control board

Time to repair

Same visit

Outcome

Error code cleared, dishwasher completing full cycles normally

The Problem

An Error Code That Kept Coming Back

The dishwasher had started stopping partway through the wash cycle, showing an error code on the display and refusing to continue without being reset. Resetting it sometimes worked for a cycle or two before the code came back. Error codes can point to several different things (a genuinely failed control board, a bad sensor feeding the board wrong information, a wiring connection issue, or even a one-off electrical hiccup) so the code itself is a starting point, not a diagnosis on its own.

The Diagnostic Process

Five Checks, In Order

Our certified technicians follow the same sequence on every error code call, because the code narrows down where to look, but confirming the actual faulty component prevents replacing the wrong part.

Record the exact error code and when it appears

Codes that appear at a consistent point in the cycle, versus randomly, usually point to a specific component tied to that stage.

Consistently appeared during the wash heating phase

Check wiring connections related to the flagged component

Loose or corroded connectors can trigger the same codes as an actual part failure.

All connections checked and found secure

Test the water temperature sensor directly

Since the code pointed to the heating phase, the sensor responsible for reporting water temperature to the control board was tested against actual water temperature.

Sensor readings didn't match actual temperature — fault confirmed

Test the control board's response to a known-good sensor input

To rule out the board itself, a known-good reading was simulated to check how the board responded.

Responded correctly, board ruled out

Clear the fault code and run a full test cycle

After the sensor was replaced, the fault code was cleared and a complete cycle was run to confirm the code didn't return.

Cycle completed, code cleared

The Root Cause: A Faulty Water Temperature Sensor

The water temperature sensor had failed and was sending an inaccurate reading to the control board during the heating phase of the cycle. The control board, doing exactly what it's designed to do, flagged the mismatch and stopped the cycle to prevent water from overheating or running a cycle at the wrong temperature. The error code was the board correctly reporting bad data, not the board itself being at fault.

The Fix & The Result

Fixed by Replacing a Sensor, Not the Control Board

The technician replaced the faulty water temperature sensor, reconnected and verified the wiring, cleared the stored fault code from the control board, and ran a full cycle to confirm the board was now receiving accurate temperature data and completing cycles without interruption.

The dishwasher completed a full cycle without the code reappearing, and by replacing the sensor instead of the control board, the repair cost significantly less than a board replacement would have. This is the outcome we aim for on every error code call: trace the code to its actual source instead of replacing the most expensive part first.

Beyond This Case

Common Causes of Dishwasher Error Codes

Not every case matches this one. Here are the most common reasons a dishwasher throws an error code, from easiest to most involved.

Cause	How Common	DIY Fixable?
Door not latching or sensed as open	Very common	Yes
Loose or corroded wiring connection	Common	Sometimes, if accessible
Faulty sensor (temperature, water level, etc.)	Common	No
Drain or float switch issue triggering a code	Common	Sometimes
Failed control board	Less common	No
Software glitch clearable with a power reset	Common	Yes

Brand-Specific Notes

This Happens Across All Major Brands

Sensor and control board fault codes show up across all major brands we service, including Bosch, KitchenAid, Whirlpool, Samsung, and Miele, though the exact code and its meaning vary by brand and model. Our certified appliance technicians have experience diagnosing dishwasher error codes across all these brands and more.

Prevention

Reduce Repeat Error Codes

Try a full power reset (unplug or breaker off for a few minutes) before assuming a part has failed
Make sure the door is latching fully and the door switch isn't obstructed
Keep an eye on recurring codes rather than just resetting and ignoring them
Avoid running cycles with known drainage or float switch issues, since it can trigger repeated faults
Note the exact code and when it appears, this speeds up diagnosis significantly

Before You Call

DIY vs. Calling a Professional

Reasonable to try yourself

A power reset and checking that the door is closing and latching properly are reasonable first steps a homeowner can try before calling for dishwasher repair.

Call a certified technician

If the code returns, testing sensors, wiring, and the control board requires equipment and access most homeowners don't have, which is where calling a certified technician prevents an expensive part from being replaced unnecessarily.