Bosch SHU43C02UC/17 dishwasher Parts

On a Bosch dishwasher like model SHU43C02UC, we do not recommend running cycles with an E22 error because it commonly points to a drain or filter restriction; continuing to run it can leave standing water, reduce cleaning performance, and strain the drain system. Use the steps in the SHU43C02UC owner’s manual to clear the cause first.

What E22 usually means on a Bosch dishwasher

E22 is most often tied to water not draining correctly due to a restriction in the filtration or drain path.

Common causes to address first:

• Food debris blocking the sump area or filter screen
• A kinked, clogged, or restricted drain line (including the air gap, if your setup has one)
• A drain pump area obstruction
• Excessive soil buildup from infrequent filter cleaning

Safe, practical steps before you run another cycle

Turn off power at the breaker before checking internal components.

• Cancel the cycle and let the unit attempt to drain
• Remove and clean the filter area; reinstall it fully seated
• Check the drain hose routing for kinks or pinches
• If you have standing water, bail it out and recheck the sump for debris
• If the dishwasher recently sat unused, run hot water at the sink first (a normal safety step noted in the manual)

Parts that often relate to E22-type drain issues

If cleaning and hose checks do not resolve it, these model-specific parts are commonly involved in drain and water-handling symptoms:

Symptom you see	What to check	Model-specific part example
Water left in bottom	Drain path restriction	Drain hose 00263099
Overfill protection triggered	Float stuck or switch issue	Dishwasher float switch 00165256
Poor wash plus drainage complaints	Heavy soil load in sump area	Sump filter 00441905

Why it matters

Running with an active E22 condition can leave water in the tub. Standing water can lead to odors, poor results, and moisture around the dishwasher base, which is exactly what we want to prevent.

Last updated: February 2026

Yes, repairing a Bosch dishwasher like model SHU43C02UC is usually worth it when the problem is isolated (leak, drain issue, poor cleaning) and the repair cost stays well below the price of a comparable new unit. We typically recommend repair when the dishwasher is in otherwise good condition and you can address the root cause with one or two parts.

Quick decision checklist

• Repair cost target: keep the total repair under about 50% of replacement cost.
• Age guideline: repair is usually a strong choice if the unit is under 10 years old.
• Problem type: single-symptom issues (won’t drain, leaks, not cleaning) are usually repairable.
• Parts availability: common wear items like seals, hoses, and valves are straightforward.
• Condition: if the tub and door are solid and racks are usable, repair makes more sense.

Common “worth it” repairs on SHU43C02UC

Many Bosch dishwasher problems come down to water handling and sealing. These are typical repairs that often restore performance without replacing the dishwasher:

• Replace a leaking lower door gasket with the door seal 00432490.
• Fix fill problems by checking the water supply and replacing the valve 00425458 if it’s not opening.
• Resolve drain issues by inspecting the drain path and replacing the drain hose 00263099 if it’s restricted or damaged.
• Improve cleaning by maintaining the filter system; a clogged filter can justify replacing the sump filter 00441905 if cleaning does not restore flow.

Cost vs. benefit guide

Situation	Usually worth repairing?	Why
Leak at the bottom of the door	Yes	Often a gasket or alignment issue; parts are manageable
Not draining	Yes	Commonly a blockage or drain-hose problem
Not cleaning well	Yes	Often maintenance-related (filter, spray arms)
Multiple major failures at once	No	Costs can stack quickly

Why it matters

Bosch dishwashers are designed for long service life, and routine care helps prevent repeat failures. The SHU43C02UC owner’s manual outlines maintenance tasks like checking and cleaning key areas (filtering and spray components) to keep wash performance strong.

Last updated: February 2026

Yes. For your Bosch SHU43C02UC dishwasher, we offer replacement parts that cover common wear items and repair needs, such as racks, seals, hoses, filters, and fill components. Use your SHU43C02UC owner’s manual to match the part to the correct location and function before ordering.

Common dishwasher parts people replace

These are the most frequent “fix it” parts for a dishwasher like the Bosch SHU43C02UC:

• Door seals and gaskets to stop leaks
• Drain hoses to fix draining issues or leaks under the sink
• Filters to improve cleaning and protect the wash system
• Fill components (valves, float switch) to address no-fill or overfill symptoms
• Racks and baskets when wheels break or coating wears

Examples of parts available for this model

Here are a few model-matched examples from our Bosch SHU43C02UC parts list:

Symptom or need	Part type	Example part for this model
Dishwasher not filling or filling slowly	Water inlet valve	Valve 00425458
Water leaking at the bottom of the door	Door seal	Door seal 00432490
Dishwasher not draining well	Drain hose	Drain hose 00263099
Poor cleaning, debris left behind	Filter	Sump filter 00441905
Overfilling or won’t run due to float issue	Float switch	Dishwasher float switch 00165256

How we recommend choosing the right replacement part

Use this quick process to avoid ordering the wrong item:

• Confirm the full model on the model and serial label (inside the door area).
• Identify the failed component by location; the manual’s component diagram helps.
• Match the part by description and function (for example, “door seal” vs “pump gasket”).
• Compare symptoms to the part’s job (fill, wash, drain, seal, or rack movement).
• Replace any related seals or O-rings when you open a water path to prevent leaks.

Why it matters

Dishwashers rely on a sealed water system and clear filtration to clean properly. A worn door gasket, clogged filter, or failing valve can cause leaks, poor cleaning, or no-start conditions. Replacing the correct part restores performance and helps prevent repeat failures.

Last updated: February 2026

Most Bosch dishwashers, including the Bosch SHU43C02UC, typically last 10 to 15 years with normal home use and basic maintenance. Consistent cleaning, correct detergent use, and keeping the filter system clear are the biggest factors that help you reach the high end of that range (or beyond).

What affects lifespan the most

• Filter and sump care: Bosch models use a multi-filter system to protect the main wash and drain pumps; keeping it clean reduces strain on the motor and improves wash performance.
• Water quality: Hard water speeds up mineral buildup on internal parts and can reduce heating and cleaning efficiency.
• How often you run it: Multiple cycles per day generally shortens life compared to 3 to 5 cycles per week.
• Loading and detergent habits: Overloading, blocking spray paths, or using too much detergent can lead to poor cleaning and extra wear.
• Leaks and door sealing: A worn seal can cause chronic moisture issues around the door.

Maintenance that extends the life of a Bosch dishwasher

Use these habits as your baseline routine:

• Clean the filter area regularly and remove debris from the sump.
• Use rinse aid to support Bosch condensation drying and reduce spotting.
• Run hot water at the sink before starting a cycle so the dishwasher fills with hotter water.
• Inspect the door sealing surfaces and wipe them clean.
• Address slow draining early (kinks, clogs, or a restricted hose).

Maintenance item	Good interval	Why it matters
Filter and sump cleaning	Weekly to monthly	Protects wash/drain pumps and keeps water flow strong
Rinse aid refill	As needed	Improves drying and reduces residue
Door seal wipe-down	Monthly	Helps prevent leaks and odor
Drain path check	Every 3 to 6 months	Prevents backups and standing water

Parts that commonly matter as the dishwasher ages

If performance drops after years of use, these are common wear or restriction points:

• Sump filter 00441905
• Door seal 00432490
• Drain hose 00263099

Why it matters

A dishwasher that is maintained tends to clean better, drain faster, and run with less stress on the wash system. That directly supports a longer service life and helps you avoid repeat issues like odors, cloudy glassware, and intermittent draining.

For cycle selection and feature details (including NSF-certified cycles and drying system notes), follow the guidance in the SHU43C02UC owner’s manual.

Last updated: February 2026

The most common Bosch dishwasher issue we see on the SHU43C02UC is poor cleaning or poor draining, usually caused by routine maintenance items: a dirty filter/large object trap, blocked spray arms, or a restriction in the drain path. Start with the cleaning and self-help steps in the SHU43C02UC owner’s manual.

Most common symptoms and what they usually mean

• Dishes still dirty: filter/large object trap clogged, spray arms blocked, or loading blocking spray.
• Water left in the tub: drain hose restriction, clogged filter area, or a drain path blockage.
• Not filling well: water supply issue or a failing inlet valve.
• Leaks at the door: worn or dirty door gasket.
• Spots or poor drying: rinse aid setting too low or rinse aid empty (the manual notes the rinse aid regulator is factory set and adjustable).

Quick checks we recommend first (fast, no parts)

1. Clean the filter area and check the large object trap; this is a top cause of wash and drain complaints.
2. Inspect and rinse spray arms; clear any food or mineral buildup from the holes.
3. Confirm the drain hose is not kinked and the sink drain/disposer connection is clear.
4. Wipe and inspect the door gasket for debris and flattening.
5. Adjust rinse aid if you see spotting or streaking (use the guidance in the manual).

Common fixes and related parts for SHU43C02UC

Problem you notice	Most likely fix	Part that’s often involved
Not filling or fills slowly	Check supply valve, then test inlet valve	Valve 00425458
Won’t drain or drains poorly	Clear restriction, verify hose routing	Drain hose 00263099
Leaks at bottom of door	Clean/replace lower door seal	Door seal 00432490
Poor cleaning over time	Clean/replace filter	Sump filter 00441905

Why it matters

Bosch dishwashers are designed to run efficiently, so a partially clogged filter, spray arm, or drain path can quickly reduce cleaning performance and trigger draining complaints. Regular care and cleaning helps keep cycle results consistent and prevents repeat clogs.

For fault lights or beeping patterns, use our Bosch dishwasher error codes guide alongside the troubleshooting steps in the manual.

Last updated: February 2026