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Sanitize Cycle LED flashing at end of wash cycle

Sanitize Cycle LED Flashing — Sanitizing Temperature Not Achieved

Whirlpool · Diagnostic Mode

What does Sanitize Cycle LED flashing at end of wash cycle mean?

This LED flashing indicates that the required temperature for the sanitize cycle was not reached. This could be due to issues with water supply or the heating element.

Common Causes

  • Incorrect water hose installation
  • Household hot water supply is insufficient (below 120°F / 49°C)
  • Faulty heating element
  • Temperature sensor issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure inlet hoses are connected properly and both hot and cold valves are fully turned on.

  2. 2

    Verify that household hot water is available at the tap and reaches at least 120°F (49°C).

  3. 3

    Check the heating element (See TEST #9a: Wash Heating Element, page 18).

  4. 4

    Check the temperature sensor (See TEST #10a: Wash Temperature Sensor, page 19).

Browse all codes in this manual (51)
Verified technical data. Last updated: April 2026

Related Faults

888 or 88Display Shows 888 or 88 — No Saved Fault CodesACU Power Check FailACU Power Check Failure — Power or Connection IssueClean Washer LED flashing at end of wash cycleClean Washer LED Flashing — Reminder to Run Clean Cycle
Source: Whirlpool Diagnostic Mode
Open Manual (Page 11)Search more codes in this manual