[Fixed] Kohler Touchless Faucet Low Water Pressure

Are you tired of Kohler touchless faucet low water pressure issue? Not getting enough water flow from your Kohler faucet. If your answer is yes, this guide is for you.

Kohler faucets are good for the kitchen and bathroom. But when you don’t get high water flow in your Kohler faucet, it becomes a frustrating situation. Here are the DIY solutions to bring back regular water pressure from the Kohler sensor faucet.

Causes of Low Water Pressure in Kohler Touchless Faucet

To solve any faucet issue, you should know the root cause of the issue. Here are common causes of Kohler faucet low flow problems.

Kohler Touchless Faucet Low Water Pressure

Low Water Supply Pressure

Sometimes, the whole house has a low water pressure issue. You should check all the faucets in the house. Whether all faucets have low water pressure issues or only Kohler has this issue.

If all faucets have a low water pressure issue, it means the problem is with the municipal supply water pressure.

The problem is not from your side, so you can’t do anything to solve it. You can talk with municipal water suppliers and ask them when the issue will be solved. You can wait until you don’t get back the right water pressure. If the low water pressure is a permanent issue from the municipal supply, you should use these kitchen faucets for low water pressure.

Clogged Aerator

Clogged Aerator

A clogged aerator is another common problem that causes low pressure in Kohler sensor faucets. The aerator in the Kohler sensor faucet creates a smooth flow of water. The aerator is fitted at the end of the faucet.

Minerals in the water accumulate on the aerator holes and clogged them. In the starting clogging is less so you don’t see any major change in the water pressure.

With time, holes are clogged fully and don’t allow water to come out with full pressure. You should clean these clogged holes to get back a high flow of water.


Damaged or Clogged Cartridge

If the aerator of the Kohler automatic faucet is not clogged, the issue might be with the cartridge. The cartridge is an important part of the Kohler faucet to control the flow of water.

The cartridge is located inside the handle and is made of plastic. When you turn the handle in on and off position, the cartridge moves. From time to time, buildup and debris form on the cartridge and damage it.

If the cartridge is damaged, change it to a new one. If its condition is good but it is clogged by buildup, clean it to remove the buildup and reattach it.


Malfunctioning Solenoid Valve

Malfunctioning Solenoid Valve

Kohler touchless faucet has a solenoid valve. This solenoid valve receives the signal from the sensor and activates the water flow.

Sometimes, the kohler faucet low pressure issue is caused by a solenoid valve. A faulty solenoid valve will not interpret signals correctly and result in problems with water pressure. By changing the solenoid valve, you can fix the Kohler kitchen faucet low water pressure issue.

Sediment Buildup In Supply Lines

Low water pressure in Kohler motion sense kitchen faucet may be caused by buildups or sediment in the supply lines. If this is the reason, it will take time to identify affected supply lines. For this, you need to remove the supply lines of the faucet under the sink and check their conditions.

Due to sediment, the faucet will be left with a low water supply. Sediment in supply lines is not common in all houses. It will occur where hard water is supplied.

After removing the supply lines, insert water from one side and check how much water comes from the other side and with what pressure. If there is no sediment, water will come out quickly with high pressure. Sometimes, you need to call a plumber to inspect the sediment in supply lines.

How To Troubleshoot Kohler Touchless Faucet Low Water Pressure Issues?

Before starting Kohler faucet troubleshooting to fix the low water pressure issue, turn off the water supply. Use these Kohler touchless faucet troubleshooting steps to get high water pressure.

Clean Clogged Aerator

Let’s start with cleaning a clogged aerator. If you see buildup around the aerator, clean it to increase the water pressure.

Take a screwdriver or plier and remove the aerator from the spout. Scrub the aerator with a toothbrush to clean loose buildup.

Now to remove the remaining buildup, make a mixture of white vinegar and water and dip the aerator in the mixture for half an hour. After that clean the aerator with water and reattach it to the spout. It will solve Kohler faucet aerator problems that cause low water flow in Kohler faucet. If you have a flow restrictor behind the aerator, remove the flow restrictor from the Kohler faucet to get regular water pressure.

Replace Cartridge

A clogged or damaged cartridge will affect the water flow. Follow these steps to increase the water pressure in your Kohler sink faucet.

  • Block the sink drain with a sink stopper. It will stop anything from going down the drain.
  • Remove the cap from the screw of the faucet handle. For this, you should use a flathead screwdriver.
  • Now remove the retaining nut that holds the cartridge in its place. To remove the retaining nut, a wrench is the right tool.
  • Check the condition of the cartridge after removing it.
  • If the cartridge is clogged, you can reuse it after cleaning it with vinegar and warm water.
  • Scrub the cartridge with a soft-bristled brush to properly clean it.
  • If the cartridge is damaged, you should replace it with a new one.
  • Install the new cartridge at the place of the old one and fix it with the retaining nut.
  • Now tighten the faucet handle by tightening the screw.
  • Cover the faucet screw with its cap.

Fix the Solenoid Valve Issue

The solenoid valve is normally found near the water supply hoses on the faucet body. Remove the valve from the faucet with pliers or a wrench. Place a bucket or a towel beneath the valve to catch any water that may leak out.

Check the solenoid valve for any damage, wear, or cracks. Search for any corrosion or rust indications. The valve may need to be completely replaced if there are any problems.

Get a new solenoid valve and reattach it to the faucet body. Tighten it with pliers or a wrench.

Clean Sediments In Supply Lines

  • Examine the supply lines that connect the faucet to the water supply valve.
  • With a wrench, the supply lines should be removed from both ends (the faucet and the water supply valve).
  • Check the supply lines for any obvious deposits of dirt or debris. If you see any kitchen faucet clogged sediment, use a brush or toothbrush to gently clean the supply lines.
  • If the supply lines are significantly jammed, they might need to be replaced entirely.

How Do I Check The Water Supply Pressure of My Kohler Automatic Faucet?

Sometimes faucet condition is good and the low water pressure issue is caused by other reasons such as not having a proper water supply to the faucet. To make sure the water supply is perfect or not, you can check the water supply pressure for the Kohler Automatic kitchen fixture.

Under the sink, turn off the hot and cold water supply valves of the faucet. Next, you need a pressure gauge to check the pressure. If you don’t have it, you can buy it online or from any hardware store.

To connect the pressure gauge, disconnect the supply line of the faucet. Now connect the pressure gauge between the supply line and the faucet.

Turn on the hot and cold water supply slowly. With the pressure gauge, you will get an accurate reading of the water pressure. In most cases, the average water pressure is between 40-60 psi. If you are getting the reading below 40 psi, then the issue is with the main water supply of the house.

2 thoughts on “[Fixed] Kohler Touchless Faucet Low Water Pressure”

  1. I was having low water pressure from my Kohler faucet. First I cleaned out the clogged aerator, then I replaced the damaged cartridge, but the pressure was still low. After reading your article, I realized the solenoid valve might be the problem. I changed the solenoid valve and now the water pressure is back to normal. Thanks.


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