2020 Toyota Corolla

Coolant bypass valve. Code is P2681, part will fail and vehicle will consistently display a Engine Maintenance Required Visit Your Dealer on the MID. Dealerships will try and charge 500+ to repair it when the part is under 100+. Problem started to appear since end of March. It's May 15th as of this report. Upon using an OBD tool this is the following message: "STATUS CONFIRMED / PENDING - ENGINE COOLANT BYPASS VALUVE 'A' CONTROL CIRCUIT/OPEN : CIRCUIT SHORT TO BATTERY OR OPEN". Part has NOT been inspected by Toyota, nearby service centers are scumbags and will charge a fortunate to fix it.

Once I parked my car and turned on the A/C a couple mins later I received a warning message on my car screen saying “ Engine Maintenance Required Visit Your Dealer”. After having my car for 4 years I’ve never received this message till now (04/22/25). I thought it was because I needed an oil change but I was wrong because my oil is good. I checked my car and saw that the issue is the “coolant bypass valve”. I don’t even use my car that much for this to happen. I saw this is a common issue with a Toyota Corolla 2020 but the dealership does not want to fix this issue for free.

Engine maintenance required notification came on. Car is only 3 years old. Dealership stated that the coolant bypass valve needs to be replaced and it could potentially cause a fire. Service professional at the dealership stated that this is a common issue and most of the time Toyota warranty doesn’t want to repair it, also said that it should be recalled. I have also seen hundreds of people complain about this on Rav4 forums.

I have a 2020 Toyota Corolla. "Engine Maintenance Required; Visit Your Dealer" came on the display after I brought my car to the dealership. I returned to the dealership and was told it was $250 to diagnose the problem. I waited a month later and brought my car back for an 80,000 inspection at the Longo Toyota in Prosper Texas. They diagnosed the problem this time and said they would have to replace the Coolant Bypass Valve and Hose for ~$800 plus labor costs. The risk of not repairing these parts is possible engine failure or fire. I've seen many other discussion forums where people are experiencing the same problem with Rav4, Corolla, and Camry models 2020-2023. These parts are not covered under warranty and would have to pay out of pocket for the repairs. Toyota should issue a recall since many people are reporting these same issues, creating out-of-pocket costs for the repairs for >$800.