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💧 Dishwasher Not Draining

Dishwasher Not Draining in Petaluma, CA

Standing water in the bottom of the tub after a cycle is the single most common dishwasher call we get in Petaluma. Most fixes finish in one visit.

Call: (707) 790-5050

Before calling, try clearing the filter, it fixes a surprising number of these calls for free. If that doesn't work, call (707) 790-5050.

Diagnosis

Why is my dishwasher not draining?

Standing water points to one of three things: a clogged filter, a blocked drain hose, or a failed drain pump. Check the filter first, it's the cheapest and most common fix.

Clogged Filter

Most modern dishwashers have a removable filter at the bottom of the tub that catches food particles. It clogs completely over months of use if it isn't cleaned periodically. This is the fix most homeowners can do themselves: twist the filter out, rinse it under running water, and run a short cycle.

Signs this is the cause: gradual buildup of standing water over weeks, food debris visible around the filter area.

Typical repair cost: $0, self-fixable in most cases

Blocked Drain Hose

The drain hose runs from the dishwasher to either the garbage disposal or a dedicated drain connection under the sink. It can kink, or the connection point can clog with food debris and grease over time.

Signs this is the cause: water drains partially, then stops, or the dishwasher shares a drain line with a disposal that hasn't been run recently.

Typical repair cost: $100 – $200

Failed Drain Pump

If the filter is clear and the hose isn't blocked, the pump itself has failed. A healthy pump makes a consistent hum during the drain portion of the cycle.

Signs this is the cause: grinding or buzzing sound during what should be the drain cycle, or no sound at all when drainage should happen.

Typical repair cost: $150 – $350

Air Gap or High-Loop Blockage

Some installations use an air gap (a small cylinder on the sink deck) or a high loop in the drain hose to prevent backflow. Both can clog with debris.

Typical repair cost: $80 – $150

Before You Call

What to check first

Check and clean the filter.

Usually at the bottom of the tub, twists out by hand. Rinse under running water and reinsert. This alone fixes many draining problems.

Run the garbage disposal.

If your dishwasher drains through the disposal, food debris built up in the disposal can block the dishwasher's drain path. Run the disposal for 15 seconds, then retry the dishwasher.

Check for a kinked hose.

If accessible, look at the drain hose under the sink for obvious kinks or pinch points.

Repair Costs

Dishwasher not draining, repair cost Petaluma 2026

Cause	Typical Repair Cost
Clogged filter (cleared on visit)	$0 – $80
Blocked drain hose	$100 – $200
Air gap or high-loop blockage	$80 – $150
Drain pump replacement	$150 – $350

Exact cost quoted after diagnosis, before any work starts.

Error Codes

Error codes related to this problem

Brand	Code	Meaning
Bosch	E24	Drain error
LG	OE	Drain error
Samsung	9E1	Drain motor error
Whirlpool	F8 E4	Long drain time

FAQ

Dishwasher not draining, questions

The drain hose is kinked or blocked, or the drain pump has failed. Both need a technician to diagnose correctly.

Yes, if left long enough. Stagnant water can affect the pump seal and grows odor-causing bacteria within a day or two.

Check your manufacturer's warranty first, most cover one year. After that, every repair we complete includes a 90-day labor warranty and 365-day parts warranty.

Usually a partial clog in the filter or hose that occasionally lets enough water through. It gets worse over time, not better.

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Call (707) 790-5050

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