Bosch Dishwasher Error Codes E15, E09, E22, E24, E25 — What They Mean & How We Fix Them

How to enter Bosch dishwasher diagnostic mode

Most Bosch dishwashers (SHX, SHE, SHV, SGE, SGS, SGV, SMV) enter customer-service test mode by closing the door, then holding the Power button while pressing Start within 3 seconds — release. The unit cycles through fill, drain, heater, diverter, and dispenser (~12 minutes). Stored fault codes display in the time window. Older integrated handle units (no display) show stored codes as the blinking pattern of the Clean indicator LED — count the blinks (e.g. 5 blinks = E05). Bosch tech mode requires a service-tool plug; the customer test above is the most actionable level.

Most common Bosch dishwasher error codes

E15 — Water in the base pan tripped the aqua-stop float. In Minneapolis homes 8 out of 10 E15 calls are condensation pooling in the base from cold concrete floors, NOT a real leak. Tip the dishwasher forward 45° (towel under feet) to drain the base pan, then let it sit upright 30 minutes. If E15 returns immediately, there's a real internal leak (door gasket, sump seal, heat-exchanger). | E22 — Sump filter is clogged: pull the filter assembly from the bottom of the tub, rinse under hot water, re-seat. Free fix on 90% of E22 calls. | E24 — Drain hose blocked, kinked, or above 96 in / drain too high. Check hose routing. | E25 — Drain pump motor blocked or failed (impeller jam) ($245–$365). | E01 / E02 — Main control board fault ($385–$525). | E04 — Flow meter (turbine) failure — turbine in the inlet manifold ($285–$385). | E05 — Overfill (float sensor) — usually a pressure-sensor calibration. | E06 — Door switch or door not closing flush. | E07 — Drying-system fan (condensation drying) — 500 / 800 / Benchmark. | E09 — Continuous-flow heater (Flow-Through Heater) open. The 'heater' is integrated with the wash pump on Bosch — expensive part ($425–$685). | E12 — Hard water deposits on heater (run a Bosch descaler). | E14 — Reed switch on flow meter. | E16 — Inlet valve stuck open (continuous fill). | E17 — Reed switch / inlet permanently signaling water present. | E18 — Inlet valve fault. | E27 — Low-voltage. | F01 — Foam / suds detected. | NA - Detergent / rinse aid empty.

E15 is condensation 80% of the time — try this first

Bosch's aqua-stop is a floating Styrofoam ring in the base pan. Any moisture lifts the float and shuts off the water inlet (the dishwasher won't fill on the next cycle). In Minnesota homes the base pan picks up condensation from cold concrete or tile floors — this trips E15 with zero actual leak. The fix is 2 steps: (1) tip the dishwasher forward 45° with a towel under the front feet and let the base pan drain, (2) leave the unit upright with door cracked open for 30 minutes. If E15 returns immediately, the door gasket or sump seal has a real leak — that's where we come in. Don't pay for parts until you've done the tilt test.

• Bosch E15 error deep dive

Bosch dishwasher repair in the Twin Cities

We stock Bosch flow-through heaters, drain pumps, inlet valves, flow meters (turbines), door switches and gaskets, BLDC wash motors, diverter valves, and the common 300 / 500 / 800 / Benchmark main control boards on the truck. Bosch tech-mode service tools are on every truck. About 80% of Bosch dishwasher repairs finish first visit. Flat $149 trip fee, waived on approval. 1-year written warranty.

• Bosch appliance repair (hub)
• Bosch dishwasher repair