E13 Moderate Easy DIY

Bosch Dishwasher E13 — Inlet water too hot

Bosch Dishwasher · Error code E13

What E13 Means

Incoming water temperature exceeds the upper limit (typically 158 deg F / 70 deg C). The control halts the cycle to protect plastic components and the wash chemistry.

Symptoms

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

Common Causes

1
Water heater set too high

Above ~120 deg F at the dishwasher inlet.

2
Tankless heater overshoot

Tankless system delivering very hot water at low flow.

3
Cross-connected lines

Dishwasher accidentally connected to recirculation loop.

4
Failed inlet NTC

Sensor reading high; check at known temperature.

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.

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 switch / lock fault

All Bosch codes → All dishwasher codes →

Verified against manufacturer documentation: bosch-home.com

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