Bosch · Dishwasher Moderate

E13 — Inlet water too hot

E13 is not in Bosch's official US dishwasher error-code list (which covers E01-E27, E0100-series, and E2000/E3000/E6000/E8000/E9000-series codes, but not a bare E13). The 'inlet water too hot' explanation below is not confirmed by Bosch's US consumer page — verify against your model's manual before assuming this specific cause.

Keep using it?
Yes, with caution
DIY difficulty
Easy
Verified against
bosch-home.com ↗

How to fix it

  1. Measure water temperature at the kitchen sink hot tap.
  2. Lower the water heater setpoint to ~120 deg F.
  3. Verify the dishwasher is plumbed to the standard hot supply, not a recirc line.
  4. Run a fresh Rinse cycle to verify the error clears.
  5. If error persists with proper inlet temp, suspect inlet NTC and replace.

Why it happens

Typical signs: Cycle stops early after fill · Steam visible from vent · Error shows on hot summer days or with tankless heater set high

  • Water heater set too high Above ~120 deg F at the dishwasher inlet.
  • Tankless heater overshoot Tankless system delivering very hot water at low flow.
  • Cross-connected lines Dishwasher accidentally connected to recirculation loop.
  • Failed inlet NTC Sensor reading high; check at known temperature.

More Bosch dishwasher codes

E01 E01 — Control board fault E02 E02 — Heating element / NTC sensor fault E03 E03 — Water not heating E04 E04 — Water flow / flow meter fault E05 E05 — Overfill / float switch tripped E06 E06 — Door-Closure or Aqua (Turbidity) Sensor Fault

All Bosch codes → All dishwasher codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: bosch-home.com.