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

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 →

Frequently asked questions

What does the E13 code mean on a Bosch dishwasher?

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.

What causes the E13 code on a Bosch dishwasher?

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.

Is it safe to keep using a Bosch dishwasher with a E13 error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix E13 on a Bosch dishwasher?

Measure water temperature at the kitchen sink hot tap. Lower the water heater setpoint to ~120 deg F. Verify the dishwasher is plumbed to the standard hot supply, not a recirc line.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.