Westinghouse Dishwasher Error Codes

Complete Troubleshooting & Repair Guide

Water Inlet System Errors
i10
Water Inlet Timeout
  • Check water supply valve is fully open.
  • Inspect inlet hose for kinks or blockage.
  • Clean inlet filter screen.
  • Verify household water pressure.
Drain System Errors
i20
Drain Blockage
  • Check drain hose for clogs or kinks.
  • Clean dishwasher filter and sump area.
  • Inspect drain pump for debris.
  • Ensure sink drain is not blocked.
Leak & Safety System Errors
i30
Leak Detected
  • Turn off water supply immediately.
  • Check base pan for water accumulation.
  • Inspect hoses and seals for leaks.
  • Dry unit and reset after inspection.
Sensor & Control Errors
i40
Pressure Sensor Fault
  • Check pressure hose for blockage or disconnection.
  • Inspect wiring connections.
  • Clean air trap system.
  • Replace sensor if faulty.
Motor & Heating Errors
i50
Wash Motor Failure
  • Check circulation pump for blockage.
  • Inspect motor wiring connections.
  • Test motor resistance.
  • Replace wash motor if necessary.
i60
Heating System Issue
  • Check heating element continuity.
  • Inspect thermostat and wiring.
  • Verify control board output.
  • Replace heater if faulty.
Control System Errors
iC0
Control Board Error
  • Perform power reset (5–10 minutes off).
  • Inspect wiring harness for damage.
  • Check for moisture on PCB.
  • Replace main control board if needed.
Important: If error codes persist after troubleshooting, disconnect power and contact a certified Westinghouse technician.