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Heavy foam build-up

Heavy foam build-up — Excessive detergent dosage

Bosch · Washing Machines

What does Heavy foam build-up mean?

Too much foam is visible during the wash cycle, indicating that an excessive amount of detergent has been used.

Common Causes

  • Detergent dosage is too high.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Immediately mix one tablespoon of fabric softener with 0.5 litres of water and pour the mixture into the left-hand compartment (avoid for outdoor clothing, sportswear, or down-filled items).

  2. 2

    Reduce the amount of detergent for the next wash cycle with a similar load size.

  3. 3

    Use only the recommended amount of detergent for your water hardness and load size.

Browse all codes in this manual (95)
Verified technical data. Last updated: April 2026

Related Faults

All other error codesAny other error codes displayed - Appliance malfunctionAppliance not workingAppliance is not working - No power or programme not startedAppliance odoursUnpleasant odours in the appliance - Bacterial growth
Source: Bosch Washing Machines
Open Manual (Page 41)Search more codes in this manual