How to Replace 00628334 Water Inlet Valve on Bosch Dishwasher — Step-by-Step

Your Bosch dishwasher won't fill with water, or maybe it's filling way too slowly and leaving dishes crusty. Nine times out of ten, that's your water inlet valve calling it quits. The 00628334 inlet valve controls water flow into your dishwasher, and when it fails, you'll know immediately — no water means no clean dishes.

What You Need Before Starting

This repair is straightforward if you've got the right tools. Here's what you'll need:

• Phillips screwdriver
• 1/4" nut driver or socket wrench
• Adjustable pliers or crescent wrench
• Towels (expect some water spillage)
• Small bucket or shallow pan
• Flashlight

Estimated Time: 30-45 minutes
Difficulty: Moderate — Requires accessing the front lower panel and working with water connections

Safety First

Turn off power to your dishwasher at the circuit breaker — not just the door switch. You'll be working near electrical connections and water lines, so this isn't optional. Also shut off the water supply valve under your sink. It's usually a small valve where the dishwasher supply line connects to your household plumbing. Give it a quarter turn clockwise until it stops.

Step 1: Access the Water Inlet Valve

The inlet valve sits behind the lower front panel of your Bosch dishwasher. Open the door and remove the screws securing the lower access panel — they're usually along the top edge of that kickplate. Pull the panel forward and down to release it. You'll see the valve on the left side, where the water supply line enters the machine. It's a small brass or plastic component with wires connected to a solenoid on top.

Step 2: Disconnect the Water Supply

Place your towels and bucket under the valve area. Using your adjustable pliers, loosen the compression fitting that connects the household water line to the inlet valve. Even with the water off, expect some residual water to drain out — that's normal. Once the fitting is loose, pull the supply line free. If it's been on there for years, you might need to wiggle it a bit.

Step 3: Remove Electrical Connections and Internal Hose

Pull the wire harness off the solenoid terminals — it should slide straight off without tools. Take a quick photo with your phone first if you're unsure about reconnection. Now locate the internal hose on the outlet side of the valve (points into the dishwasher). Depending on your model, this might be a clamp connection or a friction fit. Loosen the clamp with your nut driver or simply pull the hose off if it's friction-fit. More water will dribble out here.

Step 4: Remove the Old Valve

The valve is held in place by a mounting bracket — usually two screws or a metal clip. Remove these fasteners with your Phillips screwdriver or nut driver. Once free, the old valve lifts right out. Compare it with your new 00628334 valve before you proceed. They should look identical, with the same connection points and mounting holes.

Step 5: Install the New 00628334 Valve

Position your new valve in the same orientation as the old one — inlet port facing the supply line, outlet facing into the machine. Secure it with the mounting bracket and screws. Hand-tighten the screws first, then snug them down. Don't overtighten; you're working with plastic components. Reconnect the internal hose and secure the clamp if applicable. Push the wire harness back onto the solenoid terminals until you feel it click or seat firmly.

Step 6: Reconnect Water Supply

Thread the supply line back onto the inlet port. Hand-tighten first, then use your pliers to snug it down another quarter turn. You want it tight enough to seal without crushing the brass fitting. This is a compression fitting — overtightening can actually cause leaks.

Testing After Installation

Turn the water supply valve back on and watch for leaks around both connections. If you see drips, give the fittings another slight turn. Restore power at the breaker, then start a short rinse cycle. Listen for the valve to click and hum as it opens — you should hear water flowing into the tub within 10-15 seconds. Cancel the cycle after a minute and check under the dishwasher one more time for any leaks. If everything's dry and the machine filled properly, replace the lower panel and you're done.

Frequently Asked Questions

Will this valve work on my specific Bosch dishwasher model?

The 00628334 valve is compatible with dozens of Bosch and Thermador models, including the SHE53T52UC, SHE65T55UC, SHE68T56UC, SHE7PT52UC, and SHE863WF2N series. Check the full compatibility list on the product page or match your old valve's part number — this valve also replaces AP5691117, PS8729241, 628334, and 3278459.

How do I know if my inlet valve is actually bad?

If your dishwasher won't fill at all, fills very slowly, or keeps running without stopping (trying to fill), the inlet valve is the prime suspect. You can test it with a multimeter — the solenoid should show 500-1500 ohms of resistance. Infinite resistance or zero means it's toast. Also check for visible cracks or mineral buildup blocking the valve ports.

Do I need to replace any other parts while I'm in there?

This is a perfect time to inspect your water supply line. If it's old, kinked, or shows cracks, replace it now. A $10 supply line is cheaper than water damage from a burst hose. Also check the internal hose connection — if that hose looks brittle or cracked, order a replacement. Everything else should be fine if your only symptom was water flow issues.