P1121 - Coolant Control Valve Replacement (with pics)

Looks like I need to replace the valve again after 11 years. Didn't get the code yet but started hearing the valve noise. Would you mind sharing the eBay seller info that sold you the Denso valve?

 

The small potentiometer in the three-way valve breaks down.
You can replace it yourself by disassembling the valve. This will save you a hundred dollars.
TOCOS RVQ121 Ceramic Potentiometer 12V 502 5K with Plate PPS-GF40 360 1PC | eBay

 

Looks like parts from China, the Amazon/eBay valves all fail in about a year and are $20. This part that's $15, maybe not worthwhile unless there's a quality part that will last?

 

A three-way faucet has a motor, a worm gear, and a potentiometer that provides feedback to stop the motor when the desired rotation angle is reached. If the potentiometer tracks are worn, the incorrect resistance reading will cause the faucet motor to rotate or stop in the wrong position.

The price RVQ121 on other sites may be less than $7 or $8

 

Wow. Thank you. Really appreciate the info.
I have already ordered a “Genuine” Coolant Control Valve from eBay shortly after posting my question to Patrick. I'll cancel or return it and go this route. May even try this on my old Coolant Control Valve that I removed 14 years ago, if I can find it.

 

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That $70 delivery price makes it more expensive than the “Genuine” Coolant Control Valve that I ordered. Tariff related? Are there other alternative sources? I did a search for TOCOS RVQ121 and found your eBay link and AliExpress, which currently is not shipping to US.

 

Perhaps due to tariff wars the cost of delivery increases several times or delivery is stopped. Unfortunately, you will have to buy some analogue of a three-way valve.