Bosch Dishwasher Error Codes

Complete Troubleshooting & Repair Guide

Heating & Sensor Errors
E01
Heating Element Fault
  • Turn off power supply.
  • Check heating element wiring.
  • Inspect for burn marks or damage.
  • Replace heating element if necessary.
E09
Heating Circuit Failure
  • Inspect heating circuit connection.
  • Check control board output.
  • Test continuity of heater.
  • Replace faulty heating module.
E11
NTC Temperature Sensor Fault
  • Check sensor wiring connection.
  • Clean sensor area.
  • Test resistance of NTC sensor.
  • Replace sensor if readings are abnormal.
E13
Water Temperature Too High
  • Check incoming hot water supply.
  • Ensure water temperature is below limit.
  • Inspect thermostat regulation.
  • Reduce water heater temperature.
Water Inlet & Drain Errors
E03
Drain Pump Failure
  • Check drain hose for blockage.
  • Inspect pump impeller.
  • Remove debris from filter.
  • Replace pump if required.
E04
Water Inlet Issue
  • Check water supply valve.
  • Inspect inlet hose for blockage.
  • Clean inlet filter screen.
  • Ensure proper water pressure.
E14
Water Flow Sensor Fault
  • Inspect flow meter for blockage.
  • Check wiring connections.
  • Clean inlet system.
  • Replace sensor if needed.
E18
Water Supply Blocked
  • Check water tap fully open.
  • Inspect hose for kinks.
  • Clean inlet filter.
  • Verify water pressure.
E24
Drain Blockage or Hose Kinked
  • Check drain hose routing.
  • Remove clogs or debris.
  • Clean pump filter.
  • Ensure proper installation.
Leak & AquaStop Errors
E15
Water Leak Detected (AquaStop)
  • Turn off water supply immediately.
  • Inspect dishwasher base for water.
  • Check hoses and seals.
  • Dry and reset system.
E16
Inlet Valve Stuck Open
  • Check inlet valve operation.
  • Inspect wiring and solenoid.
  • Turn off water supply if leaking.
  • Replace valve if faulty.
E17
Water Flow Too Strong
  • Check water pressure regulator.
  • Inspect inlet valve condition.
  • Reduce household water pressure.
  • Restart appliance.
Mechanical & Pump Errors
E07
Circulation Pump Failure
  • Check pump wiring connection.
  • Inspect impeller for blockage.
  • Test motor operation.
  • Replace pump if necessary.
E20
Pump Motor Issue
  • Check motor wiring.
  • Inspect for jammed impeller.
  • Reset dishwasher.
  • Replace motor if faulty.
E21
Pump Blockage or Failure
  • Clean filter and pump area.
  • Remove debris from impeller.
  • Check motor function.
  • Replace pump if needed.
Electronic Control Errors
E19
Internal Electrical Fault
  • Reset dishwasher power.
  • Inspect wiring harness.
  • Check control board damage.
  • Replace PCB if required.
E90–E99
Control Board Failure Range
  • Perform system reset.
  • Check power fluctuations.
  • Inspect main PCB connections.
  • Replace control module if needed.
Important: Always disconnect power and water supply before servicing. If error persists, contact Bosch service center or qualified technician.