Bosch SHE53C85N 24 in 300 Series Front Control 46 dBA E21 Error Fix: Drain Pump Blocked — Timeout

Error code E21 on the Bosch SHE53C85N 24 in 300 Series Front Control 46 dBA means: Drain Pump Blocked — Timeout. The drain pump has been running for an extended period but the water level has not decreased as expected. The pump is running but water is not being evacuated. Check for a kinked or blocked drain hose. Clean the drain pump filter and check the impeller for obstructions. Verify the drain hose connection at the sink or garbage disposal — the knockout plug inside a new garbage disposal must be removed. Check for a blocked air gap if installed. The drain hose should not be inserted more than a few inches into the standpipe.

The most successful fix is "Replace the Drain Pump Assembly" (medium difficulty, ~45 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace the Drain Pump Assembly") is rated medium difficulty and takes about 45 minutes. Tools needed: T20 Torx screwdriver, Pliers, Towel.

DIY cost: $15-$25. Professional repair typically costs $120-$200. Many homeowners save money by trying the top-ranked community fix first.

The Bosch SHE53C85N 24 in 300 Series Front Control 46 dBA has 8 other known error codes, including: E0 (No Fault Codes Recorded), E1 (Heating Problem), E12 (Calcification / Scale Buildup), E13 (Water Heating Timeout), E14 (Flow Meter / Water Sensor Error), and 3 more.

Error code E21 also appears on 11 other Bosch models: SHE3AR75UC 24 in 100 Series Front Control 50 dBA, SHP65CM5N 24 in 500 Series Pocket Handle 44 dBA, SHP65TL5UC 24 in 500 Series Bar Handle 44 dBA with AutoAir, SHP878ZD5N 24 in 800 Series Pocket Handle 42 dBA, SHPM78Z55N 24 in 500 Series Top Control 44 dBA, SHPM88Z75N 800 Series Dishwasher, and 5 more. The fix may vary by model, so check each model's specific page for tailored repair steps.