Bosch 5UC Code: Water Supply Check Required

Quick Answer

Bosch 5UC means the dishwasher is not getting water. Despite looking like an error code, 5UC is more of a status indicator: the dishwasher tried to fill and found no water. The fix is almost always outside the dishwasher, not inside. Check the water supply valve under the sink first, then the AquaStop hose for a triggered lockout, then the inlet valve screen for blockage. Most 5UC events are resolved in under 5 minutes by simply opening the supply valve.

BoschDishwasherSeverity: moderate90% DIY Success

Time to Fix

5–45 min

Difficulty

beginner

Parts Cost

$28 – $85

Tools Needed

Pliers, Flathead screwdriver

Wrong code?

Not seeing 5UC on your display?

Select what your appliance is actually doing and we'll take you to the right guide.

no water entering tub

SYMPTOM

opposite condition - too much water

E17

flow sensor not detecting water

E07

What Does the 5UC Code Mean?

Many people misread 5UC on the display as SUC - it is actually 5UC and some older Bosch models display it slightly differently. The code means the dishwasher's control board commanded the inlet valve to open but the flow sensor or pressure switch detected no water entering. The AquaStop double-wall supply hose has an important feature: if it detects a leak in the inner hose, it locks out permanently and will not allow any water through until the hose is replaced.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Water supply valve closed or partially closed under the sink40%

AquaStop hose triggered into lockout after inner hose failure24%

Kinked supply hose restricting flow14%

Inlet valve solenoid failed (not opening when energized)12%

Clogged inlet valve screen completely blocking flow10%

Symptoms You May Notice

5UC displayed, no fill sound within first 30 seconds of cycle
Dishwasher starts cycle routine but tub remains dry
5UC after plumbing work or after moving the appliance
5UC every time, clears with reset but returns immediately

Can you reset a Bosch dishwasher to clear the 5UC code?

After opening the supply valve or replacing the AquaStop hose, hold Start/Reset for 5 seconds and restart the cycle.

Tools Required for Diagnosis

PliersFlathead screwdriverNeedle-nose pliers

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Check the water supply valve first

Open the cabinet under the kitchen sink. Locate the hot water shut-off valve dedicated to the dishwasher - it is typically a ball valve (lever handle) or gate valve (round handle) tapped off the hot water supply line, separate from the main sink supply valves. Turn a ball valve lever to the fully open position (parallel to the pipe). Turn a gate valve counterclockwise until it stops. Run a test cycle immediately after opening the valve and listen for the fill sound within the first 30 seconds. This is the correct resolution in the majority of 5UC service calls.

Check the AquaStop hose for lockout

Inspect the supply hose for kinks

Clean the inlet valve screen

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
AquaStop Hose Assembly00754873 · $45–$85	00754873	$45 – $85
Water Inlet Valve Assembly00631199 · $28–$60	00631199	$28 – $60

Verify part fitment for your Bosch model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

REPAIR

Estimated Cost: $57 (Parts) vs $650 (New Machine)

Frequently Asked Questions

What does 5UC mean on a Bosch dishwasher?

5UC is Bosch's status indicator for a water supply problem. Despite looking like a random code, it literally means the dishwasher tried to fill and received no water signal. The most common reason is a closed or partially closed supply valve under the sink - check there first before doing anything else. The 5UC code appears on most Bosch 500 and 800 series models; older models may show this as an E code or as a specific light pattern instead.

The water is on but I'm still getting 5UC - why?

If the supply valve is fully open but 5UC persists, the next most common cause is an AquaStop hose that has triggered its internal lockout. The AquaStop hose has a flood-prevention mechanism that permanently shuts off water flow if it detects an internal leak. To test it, disconnect the hose at the dishwasher end and try blowing through it - if you cannot push air through the fitting, the AquaStop has locked and the hose needs to be replaced. Other causes include a kinked hose or a completely clogged inlet valve screen.

My AquaStop hose triggered and locked - what do I do now?

A triggered AquaStop hose cannot be reset or repaired - it must be replaced. The lockout is permanent by design, because a triggered AquaStop means the inner hose has developed a leak, and continuing to use it would risk water damage to your kitchen floor and cabinets. The replacement Bosch AquaStop hose (OEM 00754873) costs $45-$85 and takes about 20 minutes to install. Use only the genuine Bosch AquaStop replacement - third-party hoses that lack the flood protection mechanism are not appropriate substitutes.

I got 5UC after plumbing work in the kitchen - what happened?

Plumbing work in the kitchen frequently affects the dishwasher supply in two ways. First, the plumber may have closed the dishwasher supply valve to work on nearby pipes and not reopened it - check the valve first. Second, plumbing work disturbs scale and sediment inside the pipes, sending particles downstream. These particles can clog the inlet valve screen or even lodge in the inlet valve solenoid. Check the valve, then clean the inlet screen as the second step.

Is 5UC the same as E05 on a Bosch dishwasher?

No, they are related but distinct codes. 5UC means the dishwasher attempted to fill and detected zero water flow - a complete absence of supply. E05 means the dishwasher detected some water flow but was unable to reach the required fill level within the time limit - a partial restriction. The practical difference: 5UC points to a fully closed supply valve, a triggered AquaStop, or a completely blocked screen. E05 points to a partially clogged screen, low water pressure, or a slow-opening solenoid. Both codes benefit from the same first repair step: cleaning the inlet screen.

Related Bosch Dishwasher Error Codes

Code: SYMPTOMBosch Dishwasher Not Filling with Water: Full Walkthrough Code: E17Bosch E17 Error: Overfill Protection Activated Code: E07Bosch E07 Code: Flow Sensor Problem Explained

Same Fix Works on These Brands

Bosch shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Bosch dishwasherBosch Dishwasher E15: Fix the Anti-Flood Alert Fast Bosch dishwasherBosch Dishwasher Error Codes: Complete List + Fixes Bosch dishwasherHow to Reset a Bosch Dishwasher (Every Method)Bosch dishwasherBosch E24 Error: Drain Problem Solved Step by Step Bosch dishwasherBosch E25 Code: Drain Pump Fix Without a Technician Bosch dishwasherBosch Dishwasher Not Draining: Every Cause Covered

Models Known to Experience 5UC Errors

This repair applies to most Bosch dishwashers with this error code. Common model numbers include:

SHPM88Z75N, SHPM88Z55N, SHPK7ZL55N, SHE3AR75UC, SHEM63W55N, SHPM65Z55N, SHE3AR72UC, SHDF78Z55N, SHEM78ZH5N, SHPM98Z75N

Last verified for technical accuracy on March 14, 2026