Whirlpool · Dishwasher

E2

Stuck Relay on Heating Circuit

Severity

Medium

If your Whirlpool Dishwasher is displaying the error code E2, the control board has detected a fault identified as "Stuck Relay on Heating Circuit". Understanding the root cause helps you avoid an unnecessary service call.

Owner's Summary

Your dishwasher's heating system is stuck on and overheating the water. This can damage plastic components inside. Unplug the machine until you can investigate the cause.

Symptoms

Whirlpool dishwasher water overheating, steam exiting door, E2 code

Common Causes

Heater relay on PCB stuck in closed position
Thermistor reading falsely cold causing overheating
PCB firmware error
Short circuit in heater wiring

How to Fix

1 Replace thermistor if resistance reads out of spec
2 Inspect PCB relay for burn marks — replace PCB if damaged
3 Check wiring harness for shorts
4 Update PCB firmware if update available from manufacturer

Tools You'll Need

Multimeter Flashlight

These are simple, low-risk fixes most homeowners can do with tools already in a basic toolbox.

Technical Explanation

E2 indicates the heater ran beyond the programmed time limit without the thermistor confirming the target temperature was reached and subsequently held. This suggests either a stuck relay keeping the heater on, or a cold-biased thermistor making the board think the water is never hot enough.

Is It Safe to Keep Using?

Unplug until resolved. Prolonged operation with overheating can warp plastic spray arms and damage the door seal.

Technician's Pro Tip

A thermistor reading falsely low causes the heater to run continuously — the board thinks the water is cold and keeps the relay closed. If the thermistor reads below 5k ohms at room temperature, it has failed to a low resistance state and is the cause of E2.

Related Codes

F21 — Whirlpool Washing Machine

Long Drain Time or Drain Pump Fault

High

F20 — Whirlpool Washing Machine

No Water Detected

High

F7E1 — Whirlpool Washing Machine

Motor Speed Sensing Error

High

Frequently Asked Questions

What does error code E2 mean on a Whirlpool Dishwasher?

Code E2 on a Whirlpool Dishwasher indicates "Stuck Relay on Heating Circuit." In practice, the most common trigger is heater relay on PCB stuck in closed position. Severity is rated medium, and typical repair costs range from $15 to $250.

Can I fix E2 myself, or do I need a technician?

Many cases of E2 can be resolved without a technician. The first step to try: replace thermistor if resistance reads out of spec. If that doesn't clear the code, work through the remaining steps in the "How to Fix" section above before assuming a part needs replacing.

Is it safe to keep using my dishwasher with code E2 showing?

Unplug until resolved. Prolonged operation with overheating can warp plastic spray arms and damage the door seal.

How much does it cost to repair E2 on a Whirlpool Dishwasher?

Repair costs for code E2 typically range from $15 to $250. Thermistor: $15–$40; PCB: $80–$250. Costs on the low end usually reflect a DIY fix with no parts required, while the high end reflects a part replacement plus professional labor.

Estimated Repair Cost USD

$15 – $250

Thermistor: $15–$40; PCB: $80–$250