About this guide
- Written by ApplianceWorth Editorial Team
- Technical contact Victor — appliance technician
- Record updated 2026-07-01
- Applies to Whirlpool washers
- Confidence medium
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
The record-update date is a database timestamp, not proof of a fresh model-specific technical review. Check the applicability below and your manufacturer’s instructions before acting on a guide.
What this code means
The appliance control lost communication with the bulk-detergent expansion board.
Most likely causes
- Loose expansion-board cable
- Expansion-board power fault
- Failed expansion board or ACU
Safe checks for the owner
- Use single-dose detergent if the washer allows it.
- Arrange service if bulk dispensing remains unavailable.
Estimated U.S. repair cost
$220–$700, depending on model, access, parts availability and local labor.