Code P2688115 engine maintenance required sign turned on at around 41000 miles. Other people having similar problems with coolant bypass valve. Suspect that coolant bypass valve safety standards might be at fault.
2020 Toyota Corolla
Owner reports · Recalls · Investigations
More warning signs than most Corolla years
Owner complaints for the 2020 Toyota Corolla are substantially higher than the model-year median of 129.
About this comparison →How this year compares
Owner complaints by model year
Compare all Corolla years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 68 of 305 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine. Review the 108 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 38 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 30 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Engine complaints
108 reportsNewly bought vehicle won't start when key is turned in ignition. Problem is a repeat problem and vehicle was repeatedly towed to dealer (Gosch Toyota). Dealer said there is nothing wrong with the car . Dealer admits he can't reproduce the problem and paperwork I've obtained from them indicates they may not have even tried. …
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Newly bought vehicle won't start when key is turned in ignition. Problem is a repeat problem and vehicle was repeatedly towed to dealer (Gosch Toyota). Dealer said there is nothing wrong with the car . Dealer admits he can't reproduce the problem and paperwork I've obtained from them indicates they may not have even tried. Car has major safety issue and is unreliable which is an explanation falling on deaf ears at Gosch. So it remains parked in my driveway. I refuse to put anyone in my family into it because of obvious safety issues. Car is totally unreliable if one can't rely on it to work .
We rented a 2020 Toyota Corolla from Hertz at the McCarran Airport Las Vegas NV and almost past out while driving due to Carbon Monoxide poisonings. My wife was sick 3 out of the 4 days while this auto was being driven in our possession. At first our sickness was thought to be motion sickness or maybe from something we ate. I…
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We rented a 2020 Toyota Corolla from Hertz at the McCarran Airport Las Vegas NV and almost past out while driving due to Carbon Monoxide poisonings. My wife was sick 3 out of the 4 days while this auto was being driven in our possession. At first our sickness was thought to be motion sickness or maybe from something we ate. It wasn't until we drove this car out of town when we both my wife and I started getting very sick weak dizzy and vomiting. We tried to drive out to the Hover Dam but stop about 10 miles short. After a brief rest we decided to had back to Las Vegas. Just outside of Las Vegas I could hardly breath and had all the same symptoms previously stated. Luckily I was able to get out of traffic and pulled off the high stopping at the first place I was able to pull into. I believe that If I didn't do so I would have passed out and may have caused an accident. Roadside assistance stated this is a common thing in Toyota's. My concern is how many of these cars are rentals and how many people may have been in accidents and the driver blamed? Please google 2020 Toyota Corolla Carbon monoxide poisoning for morning formation. Feel free to call me at [XXX] for more details. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6
I WAS WAITING AT A STOPLIGHT WITH MY FOOT ON THE BREAK WAITING FOR IT TO TURN GREEN. I TURN THE WHEEL TO MAKE A LEFT TURN AND PUT MY FOOT ON THE GAS AND THE CAR DIEDALL THE BUZZERS WHISTLES AND LIGHTS WERE FLASHING ON THE DASHBOARD.. I WAS ABLE TO SHIFT THE CAR TO PARK AND BACK TO DRIVE BUT NOTHING HAPPENED I WAS IN THE MIDDLE …
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I WAS WAITING AT A STOPLIGHT WITH MY FOOT ON THE BREAK WAITING FOR IT TO TURN GREEN. I TURN THE WHEEL TO MAKE A LEFT TURN AND PUT MY FOOT ON THE GAS AND THE CAR DIEDALL THE BUZZERS WHISTLES AND LIGHTS WERE FLASHING ON THE DASHBOARD.. I WAS ABLE TO SHIFT THE CAR TO PARK AND BACK TO DRIVE BUT NOTHING HAPPENED I WAS IN THE MIDDLE OF TRAFFIC ON A BUSY STREET AND WAS JUST GETTING READY TO CALL THE TOW TRUCK WHEN I DECIDED TO TURN THE CAR OFF. WHEN I TURNED IT BACK ON IT WAS FINE AND I WAS ABLE TO TURN LEFT. THAT HAPPENED TO ME TWICE ON DIFFERENT OCCASIONS. THIRD TIME I WAS TURNING INTO A DRIVEWAY AND A TRUCK PULLED IN FRONT OF ME I HAD TO PUT MY FOOT ON THE BREAK. AND THEN I PUT MY FOOT ON THE GAS AND TURNED LEFT THEN RIGHT INTO THE DRIVEWAY AND IT DIED. ITHE DASHBOARD SAID PUT IN PARK WHEN I PUT IT IN PARK IT SAID ENGINE POWER LOW. THE FIRST TIME I TOOK IT IN TO TOYOTA I WAS SITTING THERE FOR SIX HOURS AND THEY COULD FIND NOTHING WRONG. THEY TOLD ME THEY WERE WORKING WITH CORPORATE AND NO ONE HAD AN ANSWER FOR ME. AFTER THE THIRD TIME I CALLED CORPORATE AND WAS DEALING WITH A WOMAN WHO WAS VERY PROFESSIONAL AND TRY TO BE HELPFUL AND TOLD ME TO TAKE A BACK TO THE DEALERSHIP. I TOOK A BACK LEFT IT FOR TWO DAYS AND THEY COULD FIND NOTHING WRONG. THE OUTCOME WAS THAT IF IT HAPPENS AGAIN I SHOULD HAVE IT TOWED BACK TO THE TOYOTA DEALER AND NOT TURN IT ON. I AM VERY CONCERNED I AM WORRIED ABOUT DRIVING AND HAVING SOMEONE CRASH IN TO ME IF MY CAR STOPS IN THE MIDDLE OF TRAFFIC. I HAD A TOYOTA BEFORE AND IT WAS FINE BUT I HAVE TO TELL YOU IF I GET THROUGH THIS ONE WHICH IS A LEASE I WILL NEVER BUY ANOTHER ONE AGAIN
TL* THE CONTACT STATED WAS EMPLOYED BY HERTZ RENTAL CARS. THE CONTACT STATED THAT A 2020 TOYOTA COROLLA CAUGHT ON FIRE. FIRE NOTICED 3-4 HOURS AFTER VEHICLE WAS PARKED AND DRIVING OUT A PARKING LOT. THE FIRE DEPARTMENT WAS CONTACTED AND EXTINGHISED THE VEHICLE. A FIRE DEPRTMENT REPORT WAS TAKEN WITH FILE #111520199429275.…
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TL* THE CONTACT STATED WAS EMPLOYED BY HERTZ RENTAL CARS. THE CONTACT STATED THAT A 2020 TOYOTA COROLLA CAUGHT ON FIRE. FIRE NOTICED 3-4 HOURS AFTER VEHICLE WAS PARKED AND DRIVING OUT A PARKING LOT. THE FIRE DEPARTMENT WAS CONTACTED AND EXTINGHISED THE VEHICLE. A FIRE DEPRTMENT REPORT WAS TAKEN WITH FILE #111520199429275. THE CONTACT STATED THAT AFTER THE VEHICLE RENTER WAS DRIVING THE VEHICLE OUT OF A PARKING LOT AFTER BEING PARKED FOR 3-4 HOURS, FLAMES WERE NOTICED COMING FROM THE FRONT DRIVER'S SIDE OF THE VEHICLE. THE VEHICLE RENTER EXITED THE VEHICLE AND NOTICED FLAMES COING FROM UNDER THE FRONT DRIVER'S SIDE. THE FIRE DEPARTMENT WAS CONTACTED AND EXTINGUISHED THE FIRES. A FIRE DEPARTMENT REPORT WAS FILED. THE CONTACT STATED THAT THE VEHICLE WAS DEEMED A TOTAL LOSS. THE CONTACT WAS UNAWARE IF THE CAUSE OF THE FAILRUE WAS DIAGNOSED BY A DEALER. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 8,190.
ON MORE THAN ONE OCCASION I WAS GOING BETWEEN 5-10 MILES AN HOUR AND THE CAR SPUTTERED AND FELT LIKE IT WAS GOING TO SHUT OFF. I TOLD THE DEALERSHIP WHEN I TOOK THE CAR IN FOR REGULAR SERVICE AND THE TOLD ME THE COMPUTER DID NOT FIND ANYTHING WRONG AND THEY COULD NOT REPLICATE THE PROBLEM WHEN DRIVING IT. ALSO WHEN ACCELERATING …
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ON MORE THAN ONE OCCASION I WAS GOING BETWEEN 5-10 MILES AN HOUR AND THE CAR SPUTTERED AND FELT LIKE IT WAS GOING TO SHUT OFF. I TOLD THE DEALERSHIP WHEN I TOOK THE CAR IN FOR REGULAR SERVICE AND THE TOLD ME THE COMPUTER DID NOT FIND ANYTHING WRONG AND THEY COULD NOT REPLICATE THE PROBLEM WHEN DRIVING IT. ALSO WHEN ACCELERATING THE CAR WILL MAKE A CLUNKING SOUND. AGAIN THE DEALERSHIP DENIED A PROBLEM. THESE ISSUES HAVE HAPPENED MULTIPLE TIMES
WILL DRIVING THE CAR DECELERATED AND WOULD NOT GO PASS 20MPH. BREAK,ENGINE,ECT. LIGHTS TURNED ON. THE CAR HAS ONLY 1345 MILES. SO FAR IT HAS HAPPENED TWICE. SECOND TIME GOING TO THE DEALERSHIP.
ENGINE ABNORMAL SHIFT DOWNWARD WHILE DRIVING REGULARLY. I FEEL THE SHIFT IS NOT SMOOTH EVEN FEELS LIKE A DEFECT IN THE ENGINE SHIFT SYSTEM 17,000 MILES MOSTLY HAPPENS REGULARLY DRIVING ON CITY STREETS AND A BIT LESS HAPPENS ON THE PARKWAY BUT DOES HAPPEN. THE SHIFTS ARE HARD TO IGNORE I REMEMBER THE VERY TIME I FELT IT ON 1…
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ENGINE ABNORMAL SHIFT DOWNWARD WHILE DRIVING REGULARLY. I FEEL THE SHIFT IS NOT SMOOTH EVEN FEELS LIKE A DEFECT IN THE ENGINE SHIFT SYSTEM 17,000 MILES MOSTLY HAPPENS REGULARLY DRIVING ON CITY STREETS AND A BIT LESS HAPPENS ON THE PARKWAY BUT DOES HAPPEN. THE SHIFTS ARE HARD TO IGNORE I REMEMBER THE VERY TIME I FELT IT ON 10,000 MILES AND IT WOULD ABLE OCCASIONALLY AND NOW IT'S HAPPENING EVEN MORE FREQUENTLY THAN I CAN POSSIBLY SAY THIS IS AN ONGOING DEFECT AND GROWING TO BE A PROBLEM EVEN MORE SO.
Official recalls
323V865000 · Air Bags:sensor:occupant Classification
Dec 20, 2023
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2021 Avalon, Avalon Hybrid, Corolla, Highlander, Highlander Hybrid, RAV4, RAV4 Hybrid, Lexus ES350, Lexus RX350, Lexus RX450H, 2021 Sienna Hybrid, Lexus ES250, 2020-2022 Camry, Camry Hybrid, and ES300H vehicles. A short circuit may develop in the Occupant Classification System (OCS) sensor, preventing the front passenger air bag from deploying.
Consequence & remedy
Consequence: An air bag that does not deploy during a crash increases the risk of injury.
Remedy: Dealers will inspect and replace the sensor as necessary, free of charge. Interim letters notifying owners of the safety risk were mailed in February 2024. Some final remedy owner letters were mailed October 31, 2024. Letters will continue to be mailed in phases through January 2026. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 23TB15/23TA15 Lexus 23LB03/23LA03.
20V682000 · Fuel System, Gasoline:delivery:fuel Pump
Nov 4, 2020
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry, 2020 Corolla, 2018-2019 Land Cruiser, 2017-2020 Tacoma, 2019-2020 RAV4, 2019-2020 Sequoia, 2017-2020 Sienna, 2019-2020 Tundra, 2018-2020 Lexus ES350, 2017 Lexus GS200t, 2017-2019 Lexus GS350, 2019 Lexus GS300, 2018-2020 Lexus LC500h, 2019-2020 Lexus LS500, 2018-2019 Lexus GX460, 2017 Lexus IS200t, 2019 Lexus IS300, 2019 Lexus IS350, 2018-2020 Lexus LC500, 2018 Lexus LS500, 2019 Lexus LS500h, 2018-2019 Lexus LX570, 2017 Lexus RC200t, 2019 Lexus RC300, RC350, 2017 and 2019-2020 Lexus RX350, 2018-2020 RX350L, 2019 Lexus UX200, 2018-2019 Lexus NX300 vehicles. The low-pressure fuel pump inside the fuel tank may fail.
Consequence & remedy
Consequence: If the fuel pump fails, the engine can stall while driving, increasing the risk of a crash.
Remedy: Toyota will notify owners, and dealers will replace the fuel pump assembly with an improved one, free of charge. Owners of specific models were notified that remedy parts were available starting January 21, 2021. Owners of other models will be notified as remedy parts become available. Remedy parts should be available for all affected vehicles by late March 2021. Owners may contact Toyota customer service at 1-888-270-9371 or Lexus customer service at 1-800-255-3987. Note: This recall is an expansion of recall 20V-012. Toyota's number for this recall is 20TA02. Lexus' number for this recall is 20LA01.
19V877000 · Seat Belts: Rear/other:buckle Assembly; Seat Belts:rear/other
Dec 11, 2019
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2019-2020 C-HR and 2020 Corolla and Corolla Hybrid vehicles equipped with rear seat belt assemblies with a dual-mode locking mechanism. The seat belt webbing sensor locking mechanism may not lock as intended.
Consequence & remedy
Consequence: In the event of a crash involving multiple impacts, the seat belt may not properly restrain the occupant, increasing the risk of injury.
Remedy: Toyota will notify owners, and dealers will inspect the rear seat belt assembly production dates, and replace the assemblies, as necessary, free of charge. The recall began February 7, 2020. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's numbers for this recall are 19TB22 and 19TA22.
Additional source detail variants (2)
Seat Belts: Rear/other:buckle Assembly
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2019-2020 C-HR and 2020 Corolla and Corolla Hybrid vehicles equipped with rear seat belt assemblies with a dual-mode locking mechanism. The seat belt webbing sensor locking mechanism may not lock as intended.
Consequence: In the event of a crash involving multiple impacts, the seat belt may not properly restrain the occupant, increasing the risk of injury.
Remedy: Toyota will notify owners, and dealers will inspect the rear seat belt assembly production dates, and replace the assemblies, as necessary, free of charge. The recall began February 7, 2020. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's numbers for this recall are 19TB22 and 19TA22.
Seat Belts:rear/other
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2019-2020 C-HR and 2020 Corolla and Corolla Hybrid vehicles equipped with rear seat belt assemblies with a dual-mode locking mechanism. The seat belt webbing sensor locking mechanism may not lock as intended.
Consequence: In the event of a crash involving multiple impacts, the seat belt may not properly restrain the occupant, increasing the risk of injury.
Remedy: Toyota will notify owners, and dealers will inspect the rear seat belt assembly production dates, and replace the assemblies, as necessary, free of charge. The recall began February 7, 2020. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's numbers for this recall are 19TB22 and 19TA22.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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