Bosch SHP78CM5N — E24, E6102 or E6103: drain path restricted. This code family points to the removable pump cover, filters, drain hose, disposer connection or air gap rather than an internal E23 pump fault. Preserve the exact display, programme stage and behaviour before changing anything. Unplug, let the tub cool, clean the removable filters and correctly refit the pump cover; then inspect only the visible hose, disposer knockout and air gap before one drain test. Cancel the programme, isolate electrical power, close the water valve for any inlet or leak symptom and let the tub cool. Wear gloves near filters because hidden glass may be present; never tilt a built-in unit or open its base, door skin, pumps or wiring.
Models covered
Safety first
- Cancel the programme, isolate electrical power, close the water valve for any inlet or leak symptom and let the tub cool. Wear gloves near filters because hidden glass may be present; never tilt a built-in unit or open its base, door skin, pumps or wiring.
What the symptom may indicate
Checks in the right order
- Capture the starting point
Photograph or note “E24, E6102 or E6103: drain path restricted”, the selected programme, remaining water and what happened immediately before it.
- Make the appliance safe
Cancel the programme, isolate electrical power, close the water valve for any inlet or leak symptom and let the tub cool. Wear gloves near filters because hidden glass may be present; never tilt a built-in unit or open its base, door skin, pumps or wiring.
- Follow the official user check
Unplug, let the tub cool, clean the removable filters and correctly refit the pump cover; then inspect only the visible hose, disposer knockout and air gap before one drain test.
- Retest once and decide
If the exact condition clears, observe one supervised normal cycle. If it returns, preserve the evidence and use authorised service rather than repeating resets or guessing a part.
Stop and get qualified help when
- Stop immediately for smoke, burning smell, a hot plug, damaged cable, breaker trip, uncontrolled filling, water near electrics, an active leak, escaping steam or the exact fault returning after one documented test.
Next step
Repair, replace a part, or arrange a diagnosis?
Use the checks and stop conditions above to choose a cautious next step. A symptom alone never proves that the appliance has failed.
Resolve it without buying anything
Complete the 4 user-accessible checks in order. If normal operation returns and no warning sign remains, no replacement is indicated.
Replace only the confirmed part
If the checks isolate a worn or blocked component, match its complete reference to the exact appliance model before ordering.
This guide does not identify a replacement part. Do not order a generic component from the symptom alone.
Arrange a diagnosis before replacing the appliance
Stop at any warning sign listed above. A qualified diagnosis should confirm that repair is unsafe, unavailable or uneconomical before an appliance replacement is considered.
Sources used
- Bosch — Bosch's official manual, support article or exact model page documents “E24, E6102 or E6103: drain path restricted” and the bounded user action retained here.
- Bosch — Bosch's official manual, support article or exact model page documents “E24, E6102 or E6103: drain path restricted” and the bounded user action retained here.
- Bosch — Bosch's official manual, support article or exact model page documents “E24, E6102 or E6103: drain path restricted” and the bounded user action retained here.
- Bosch — Bosch's official manual, support article or exact model page documents “E24, E6102 or E6103: drain path restricted” and the bounded user action retained here.
Last checked: 30 August 2026