2020 Toyota Corolla engine problems

Related recalls

No recalls on file.

What owners say

1. Filed Oct 8, 2026CABrakesEngineTransmission & Drivetrain

   What component or system failed or malfunctioned: complete slave cylinder failure resulting in loss of braking and ability to shift. Luckily I was traveling at a low rate of speed when this happened, but if this happens to anyone on the freeway or while turning against traffic for example they would have no control of their car and could be seriously injured. I took it to the dealership and they diagnosed it as a slave cylinder failure at only 70k miles. This is incredibly…

   NHTSA complaint #11769934 · source
2. Filed Oct 3, 2026GAElectrical SystemEngine

   My Engine Maintenance light came on around 59,400 miles for my Coolest Control valve !! Needed it to be replaced! Light won’t go off just had it serviced for an oil change before this started!!

   NHTSA complaint #11768781 · source
3. Filed Aug 6, 2026CAEngine

   Part is the coolant bypass valve. Toyota has been taken to court but dealership claims now that I’m over 100k miles I can’t do it. There was also a second part about 10 years but I wasn’t clear on the details of the outcome. Toyota has acknowledged this issue in court but failed to do so at the customer level in my case. engine light came on at 97k and now I’m at 104k which is over that 100k mark. Issue is I’ve only take my car to Toyota for repairs. They have known about…

   NHTSA complaint #11755244 · source
4. Filed Jun 7, 2026CAEngine

   A message came on the screen saying “engine maintenance required” and it’s not going away. Upon doing a google search, there is a common failure in the cooling system for these cars reported by a lot of owners.

   NHTSA complaint #11742614 · source
5. Filed Apr 24, 202659,000 miPAEngineFuel, Hybrid & EV Propulsion

   The contact owns a 2020 Toyota Corolla. The contact stated that while at a red light, the vehicle shut off with the check engine and several other unknown warning lights illuminated. The vehicle restarted after several attempts. The vehicle was taken to an independent mechanic and the failure was duplicated. The mechanic retrieved DTC: P1603; "Engine Stall History" (ECM recording an unexpected engine shutdown or a communication error with the Transmission Control Module…

   NHTSA complaint #11733489 · source
6. Filed Aug 27, 2025CAEngine

   I have experienced a message saying 'Engine Maintenance Required' and after experiencing the same instances as many people have online, it seems the engine coolant bypass valve is faulty and needs to be replaced. No code can be read using a code reader either.

   NHTSA complaint #11683483 · source
7. Filed Aug 11, 2025MDEngineOther / Unknown

   Engine Maintenace required light came on. I was told that my coolant bypass valve needed to be replaced. This is happening on all Toyota vehicles from 2018-2024 common issue but the repair to fix something that should be covered under warranty.

   NHTSA complaint #11679742 · source
8. Filed Jun 23, 2025CAEngine

   On June 19, 2025, I was driving and out of nowhere, there was a warning notification that said "A warning light was turned on. Would you like to call an operator?" On the digital cluster, there was a message that said "Engine Maintenance Required - Visit Your Dealer. Mileage noted down was 79,632. I asked around for some insight and people are telling me it's the water/coolant bypass valve that's leaking and the Op code is 24TE04R1. Will this be a covered service?

   NHTSA complaint #11668609 · source
9. Filed Jun 21, 2025ALEngine

   The engine maintenance required message appeared on the dash. I was travel from work to home (about 40 miles). I pulled over immediately at a store, left my car and walked over a mile to the mechanic shop down the road (in 95° weather with a knee that has been through 3 surgeries in less than 5 years). The gentleman took me back to my car. Followed me as i took my car back to the repair shop since it was close and did not have any lights on the dash and I was not…

   NHTSA complaint #11668341 · source
10. Filed May 22, 2025CAEngine

    I have an error that appeared displaying “Engine Maintenance Required” after some investigation snd research, I have noticed that this is a common issue associated with the OEM Engine Coolant Bypass Valve. This occurred as I was driving home from work when I was driving down the freeway, I did not run into any obstacles or have an accident, it appeared out of thin air.

    NHTSA complaint #11662682 · source
11. Filed May 19, 2025CAEngine

    unknown. i know that my car was doing fine and then randomly the coolant was low and my car was overheating on my way to work. i have yet to get it fixed, as i dont know how much it could cost me. but i read that 2020-2021 toyota makes were having issues with their coolant.

    NHTSA complaint #11661991 · source
12. Filed May 16, 2025WAEngineOther / Unknown

    An engine maintenance required warning popped up. The pop up wasn't going away. My engine sounds louder than usual when turning my A/C on.

    NHTSA complaint #11661513 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology