Bosch · Dishwasher

E5

Overfill Error

Severity

High

The error code E5 on your Bosch Dishwasher indicates a specific system failure categorized as "Overfill Error". This guide walks you through the most likely causes and the correct repair sequence.

Owner's Summary

Your Bosch dishwasher is receiving too much water. Turn off the water supply valve under the sink right now and unplug the machine. This prevents potential flooding of your kitchen.

Symptoms

Bosch dishwasher filling continuously, water overflowing, E5 error

Common Causes

Water inlet valve stuck open
Defective water level sensor or pressure switch
Clogged sensor air chamber
PCB relay stuck closed

How to Fix

1 Close water supply valve under sink immediately
2 Unplug dishwasher
3 Drain machine manually
4 Inspect and replace water inlet valve
5 Test and replace water level pressure switch

Tools You'll Need

Towels / Bucket Bubble Level Flashlight

Most of these fixes need only basic hand tools. If your repair requires opening electrical housings or testing live components, a multimeter and basic electrical safety knowledge are essential — when in doubt, call a technician.

Technical Explanation

E5 is triggered when the water level sensor signals full but the inlet valve continues to fill, or when the water level exceeds the maximum safe threshold detected by the pressure switch. The EGO module cuts all outputs when E5 is triggered.

Is It Safe to Keep Using?

Urgent. Disconnect water and power before any further diagnosis.

Technician's Pro Tip

On Bosch dishwashers, the pressure switch is connected to a small air dome inside the sump area. If this dome is clogged with food debris, the switch reads empty even when the machine is full — causing continuous filling. Clean the dome and its air tube before replacing the pressure switch.

Related Codes

E1 — Bosch Washing Machine

Water Intake Fault

High

E18 — Bosch Washing Machine

Drain Fault — Water Not Pumping Out

High

E17 — Bosch Washing Machine

Water Intake Too Slow

Medium

Frequently Asked Questions

What does error code E5 mean on a Bosch Dishwasher?

Code E5 on a Bosch Dishwasher indicates "Overfill Error." In practice, the most common trigger is water inlet valve stuck open. Severity is rated high, and typical repair costs range from $20 to $200.

Can I fix E5 myself, or do I need a technician?

Many cases of E5 can be resolved without a technician. The first step to try: close water supply valve under sink immediately. If that doesn't clear the code, work through the remaining steps in the "How to Fix" section above before assuming a part needs replacing.

Is it safe to keep using my dishwasher with code E5 showing?

Urgent. Disconnect water and power before any further diagnosis.

How much does it cost to repair E5 on a Bosch Dishwasher?

Repair costs for code E5 typically range from $20 to $200. Inlet valve: $40–$150; Pressure switch: $20–$60; PCB: up to $200. Costs on the low end usually reflect a DIY fix with no parts required, while the high end reflects a part replacement plus professional labor.

Estimated Repair Cost USD

$20 – $200

Inlet valve: $40–$150; Pressure switch: $20–$60; PCB: up to $200