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ErrBase

LG Dishwasher RE Error Code: Rinse Error

Quick Answer

RE on an LG dishwasher is a rinse-related error. In most cases, the first thing to check is whether the rinse aid reservoir is empty -- an empty reservoir can cause RE on some LG models because the dispenser cannot dispense. If the reservoir is full and RE persists, the rinse aid dispenser solenoid may have failed.

RE on an LG dishwasher is a rinse-related error. In most cases, the first thing to check is whether the rinse aid reservoir is empty -- an empty reservoir can cause RE on some LG models because the dispenser cannot dispense. If the reservoir is full and RE persists, the rinse aid dispenser solenoid may have failed. RE can also appear as a cycle sequence error if the main wash did not drain fully before the rinse phase began.

LgDishwasherSeverity: moderate78% DIY Success
Time to Fix
5–30 min
Difficulty
beginner
Parts Cost
—
Tools Needed
Small brush, Warm water

What Does the RE Code Mean?

RE means a rinse cycle error. Check rinse aid level first -- refill if empty. If full, inspect the dispenser solenoid. Also check for OE drain codes appearing alongside RE.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Rinse aid reservoir empty40%
Rinse aid dispenser solenoid failed24%
Control board rinse cycle sequencing error22%
Drain fault preventing rinse cycle from starting correctly14%

Symptoms You May Notice

  • RE displayed at end of wash or during rinse phase
  • Dishes may have water spots or detergent residue
  • Rinse aid indicator light may be illuminated
  • Cycle may abort before final rinse

Can you reset a Lg dishwasher to clear the RE code?

After refilling rinse aid or clearing the dispenser flap, unplug for 60 seconds and restart. If RE was caused by an empty reservoir, it will not return once refilled.

Tools Required for Diagnosis

Small brushWarm water

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

Open the dishwasher door and locate the rinse aid dispenser cap

Open the dishwasher door and locate the rinse aid dispenser cap on the inside of the door. Open the cap and visually confirm whether the reservoir is empty. Refill to the MAX line with rinse aid.

2

With the door open

3

If RE persists with a full reservoir and a free dispenser flap

Frequently Asked Questions

Does an empty rinse aid reservoir really cause RE on LG dishwashers?
On certain LG models, the control board expects the dispenser to actuate during the rinse cycle. If the reservoir is empty, the solenoid still fires but no rinse aid is dispensed, and the board can register this as a dispenser circuit fault resulting in RE. Refilling the reservoir is always the first step.
Can RE appear alongside other error codes?
Yes. RE can appear together with OE if a drain failure prevented the rinse cycle from starting. In that case, fix the OE drain fault first -- RE may resolve on its own once the cycle sequence runs correctly.

Related Lg Dishwasher Error Codes

Code: OELG Dishwasher OE Error Code: Drain FaultCode: IELG Dishwasher IE Error Code: Water Inlet FaultCode: HELG Dishwasher HE Error Code: Heater Fault

Same Fix Works on These Brands

Lg shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience RE Errors

This repair applies to most Lg dishwashers with this error code. Common model numbers include:

LDFN4542D, LDF5545ST, LDFS5788S, LDP6763ST, LDFN3432T, LDFN4542S, LDFN4542W

Last verified for technical accuracy on March 14, 2026