Bosch SHE3ARF2UC/21 dishwasher Parts

For Bosch dishwashers like model SHE3ARF2UC, the most common issue we see is drainage trouble (water left in the tub), usually tied to a clogged filter area, a restricted drain hose, or a failing drain pump. Use the SHE3ARF2UC manual for the exact cleaning and reset steps for your control panel.

• Standing water after the cycle: drain path restriction or drain pump problem
• Humming but not draining: drain pump jammed or weak
• Slow drain: partial clog in hose, air gap, or disposer connection
• Fills but stops mid-cycle: drain or wash system sensing an issue
• Error code on the display: points to a specific system (drain, fill, heating, sensor)

1. Turn off power at the breaker.
2. Remove and clean the filter area in the bottom of the tub (food debris and labels are common).
3. Inspect the drain hose routing for kinks and confirm a high loop under the counter.
4. Check the sink drain/disposer inlet where the dishwasher hose connects (clear any blockage).
5. Run a short cycle and listen: a strong drain sounds like a steady pump-out, not a faint hum.

If cleaning and hose checks do not fix it, these are the most common repair parts for this model family:

Bosch error codes quickly separate a drain problem from a fill, heating, or sensor problem. Use our Bosch dishwasher error codes guide to match the code to the likely cause and next step.

Drainage problems can leave dirty water in the tub, cause odors, and stop the dishwasher mid-cycle. Fixing the drain path early also helps protect the circulation pump and heater from debris-related strain.

Last updated: January 2026

Yes, most Bosch built-in dishwashers (including the Bosch SHE3ARF2UC) are designed to fit a standard 24-inch-wide opening, while some Bosch models are compact 18-inch-wide units. For the exact cutout and clearance requirements for your installation, use the SHE3ARF2UC owner's manual.

Most kitchens are built around two common dishwasher widths. Height and depth can vary slightly by series and installation method (under-counter vs. custom panel).

• Full-size built-in: about 24 inches wide
• Compact built-in: about 18 inches wide
• Typical height range: about 33 1/2 to 35 inches (adjustable legs)
• Typical depth range: about 24 inches (cabinet depth), plus door thickness

Use these checks before ordering parts or planning a replacement.

• Measure the opening width at the front and back (cabinets can be out of square)
• Measure opening height from floor to underside of countertop
• Confirm depth to the back wall, including plumbing clearance
• Check for leveling leg adjustment range
• Verify where the drain hose and water line route so the unit can slide in fully

A dishwasher that is even slightly too tall, too deep, or not routed correctly for the drain and water lines can bind when you push it into the opening, cause vibration, or make the door sit unevenly. Confirming the cutout specs helps avoid installation headaches and leaks.

Last updated: January 2026

On the Bosch SHE3ARF2UC dishwasher, an E21 error typically points to a wash motor or pump circulation problem, most often caused by restricted water flow from debris or a draining issue that leaves water where it should not be. We focus first on clearing blockages, then test the pump and motor circuit.

1. Turn off power at the breaker.
2. Remove standing water from the tub.
3. Pull out the lower rack and clean the filter area.

Use these high-impact checks:

• Clean the sump and filter area; remove glass, labels, seeds, and bone fragments.
• Spin the impeller area by hand (if accessible) to confirm it is not jammed.
• Check the drain path for restrictions (air gap, garbage disposal inlet, sink drain).
• Inspect the drain hose routing for kinks and confirm a proper high loop.
• Run a short cycle after cleaning to see if the code clears.

If the dishwasher still shows E21 after clearing debris, the issue is often a weak or failed pump, or a restriction in the drain circuit.

• If the unit will not evacuate water reliably, the drain pump is a common fix: dishwasher drain pump 00611332
• If the hose is restricted, split, or kinked, replace it: dishwasher drain hose 00668108

E21 is usually a water-movement problem. Clearing the filter and drain path prevents repeat clogs, protects the pump, and restores normal wash pressure so the dishwasher can heat and clean correctly.

For access steps, filter cleaning, and any model-specific reset procedure, follow the SHE3ARF2UC manual.

Last updated: January 2026

To reset an active error on your Bosch dishwasher model SHE3ARF2UC, we cancel the current cycle from the control panel, let the unit drain, then restart a new cycle. Use the exact button sequence shown in the SHE3ARF2UC manual for your control layout.

• Press and hold Start until the dishwasher responds (many Bosch models cancel in about 3 to 5 seconds).
• Close the door and wait for the cancel/drain to finish (you may hear the drain pump run).
• Turn the dishwasher off, wait 30 seconds, then turn it back on.
• Start a normal cycle and watch for the code to return.

A repeating code means the dishwasher is still detecting the same condition. Focus on the system tied to the code or symptom:

• Won’t start or stops quickly: confirm the door is fully latched; inspect the latch area for looseness or damage.
• Not draining: clear the filter/sump area, check for a kinked hose, and confirm the sink drain is open.
• Not filling: verify the shutoff valve is open and the inlet screen is not clogged.
• Poor cleaning: check spray arms for clogs and confirm proper loading.

Resetting clears the active fault so you can confirm whether it was a one-time interruption or a true failure. If the code returns, troubleshooting the correct system prevents repeat shutdowns and protects the pump, heater, and control.

Last updated: January 2026