Samsung PC ER Error Code | Fast & Reliable Repair

Error Code Explained

What Does the Samsung PC ER Error Code Mean?

The PC ER error code on a Samsung dishwasher indicates a communication fault between the main control board and the display/user interface board. Samsung dishwashers use two separate circuit boards — the main PCB that controls the wash motor, pump, heater, and valves, and a display board that handles the control panel and user inputs. PC ER appears when these two boards cannot communicate over the data line between them.

PC ER can be caused by a loose ribbon cable, a failed display board, a failed main board, or a wiring fault. A power reset resolves PC ER if the cause was a transient communication error.

Root Causes

Common Causes of the Samsung PC ER Error Code

1

Loose or Damaged Ribbon Cable

The ribbon cable or connector between the main PCB and display board has loosened, pulled out slightly, or been damaged.
2

Failed Display Board

The display/UI board has failed and is not responding to the main board's communication attempts.
3

Failed Main Control Board

The main PCB communication circuit has failed. Less common than display board failure.
4

Moisture Damage to Connector

Corrosion from steam or a minor leak has damaged the connector pins on the communication cable.

Step-by-Step Guide

How to Troubleshoot the PC ER Error Code

⚠️

Safety First: Always disconnect the Dishwasher from power before inspecting any internal components. Do not attempt electrical repairs. If in doubt, call a certified technician.

1

Power reset

Turn off at the circuit breaker for 5 minutes. Transient communication errors often clear on power-up re-initialization.
2

Check the door panel connections

The ribbon cable between the main board and display board runs through the dishwasher door. If the dishwasher has been recently serviced or if the door inner panel has been removed, a connector may not be fully reseated.

Professional Service

When to Call a Samsung Technician

⚠ Stop DIY if any of these apply

If PC ER persists after a reset, a technician is needed to test the ribbon cable, display board, and main board to identify which component has failed.

Estimated Repair Cost

$120 – $340

Exact quote before any work begins. No surprises.

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FAQ

Frequently Asked Questions — Samsung PC ER

PC ER prevents the dishwasher from operating entirely — neither the control panel nor the wash cycle functions. It requires repair before the dishwasher can be used.
In most cases, yes — PC ER is more commonly caused by a failed display board than the main board. However, a technician should test both boards and the ribbon cable before ordering parts, as main board failures also cause PC ER.

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