2019 Toyota Corolla Engine Problems

Error message that said 'drive start control malfunction. Took 6 mos and numerous attempts to resolve. Replaced numerous parts including the fuel pump because the plastic it's made out of was just disintegrating and and cracking. This has cost thousands of dollars in parts and labor. Also getting a msg on info screen 'connected device not supported' now. Apparently toyota did an update and there was a bug in the program yet I have to pay to fix their error to the dcm.

NHTSA ID

11724036

Incident

Sep 10, 2025

The slave cylinder failed l3aving me stranded in a parking lot. Luckily I wasnt driving down the highway as the slave cylinder is also part of the brake system they use the shared brake fluid reservoir. This is a very common problem and is a 4k plus cost to fix. Not including the time that has to go into fighting the warranty companies and dealers.

NHTSA ID

11721047

Incident

Aug 13, 2025

Faulty slave cylinders , that lead to more damage such as the clutch & flywheel and

NHTSA ID

11698359

Incident

Feb 27, 2023

I have a 2019 Toyota Corolla Hatchback. The problems started on July 21st, 2025. While driving my 2019 Toyota Corolla Hatchback, I noted white exhaust smoke, even after the engine was warm. One week prior, I had filled the coolant reservoir, but when I checked it, the coolant was almost gone again. There were no visible leaks or puddles under the car. I refilled the coolant, but within days the car began shaking severely upon startup and emitted a coolant-burning smell. 5 minutes after, multiple warning lights illuminated on the dashboard simultaneously. I replaced the car battery, and the warnings disappeared. However, while merging onto the freeway, the same warning lights came back, the car lost power, and I could not accelerate above ~25 mph. If this occurred in heavy traffic, it could lead to a serious collision. I exited the freeway and had the car towed. DTCs from the independent mechanic and the Toyota dealer included: P11ED00 P030085 P030027 P030200 (Cylinder 2 misfire) C142571 (Stop light relay actuator stuck) U1117 B2284 B15AD The Toyota dealer identified a “Port Injector #2 malfunction” and recommended replacing all four injectors (~$2,000) but could not confirm this would fix it. They noted a coolant-burning smell but advised addressing the misfire first before further diagnosis. There is an active class action lawsuit alleging that 2019–2023 Toyota Corolla and RAV4 models have defective coolant bypass valves that may cause engine issues, overheating, or coolant loss without visible leaks. This matches the coolant loss, white exhaust smoke, and eventual power loss while driving. I request that NHTSA investigate this issue in connection to the reported coolant bypass valve defects affecting 2019–2023 Toyota Corolla models.

NHTSA ID

11681200

Incident

Jul 23, 2025

While driving my 2019 Toyota Corolla Hatchback XSE, I lost almost all power to my accelerator and a check engine light appeared on my dash. I came to a stop and stalled the vehicle, once it stalled I turned the engine back on and shifted into reverse a felt and heard a loud clunk noise coming from right under my car and its not only shifting into reverse is the loud noise active but its also shifting into drive from reverse. I scanned my vehicle with a aftermarket scan tool and got 2 exact same codes for "Torque Converter Clutch Pressure Control Solenoid Control Circuit Performance/Stuck Off" and then two more codes for "Torque Converter Clutch Pressure Control Solenoid Control Actuator Stuck On". My torque converter in my CTV transmission failed. I was not at a risk of putting other people or myself in danger but if would have if i was moving faster at the time this happened. I have done my research on the recalls that are active on this vehicle and on the Toyota OEM TIS website there is only 1 recall that was taken care of in 2021 for the fuel pump and then there is a Warranty Enhancement Program for the Flow Shut-off Valve Coolant Leak. I did not find anything on that Toyota TIS website about the CVT recall but when i search my year, make and model on the web, I see that there is a recall for about 3,400 vehicles in the USA and nearly 1,000 in Canada that have a active recall for the CTV. I also saw the recall consequence and it matches up with what happened with my Corolla. I have attempted to contact 5 difference Toyota dealerships in my state to have them help me figure out the issue I am having with my vehicle not being listed in the recall but my CTV just failed. No one has reached back out in the past two days and I am continuing to call almost 3 times a day. I would like some clarity on how I should go about handling this issue.

NHTSA ID

11680495

Incident

Aug 11, 2025

I got an “engine maintenance requested” notification on my car. I took it to a mechanic and they said the coolant bypass valve is defected

NHTSA ID

11660247

Incident

May 9, 2025

Engine Coolant Bypass Valve Issues/Faulty. No problems prior to “engine maintenance message”. Message only comes up when the A/C is turned on.

NHTSA ID

11658908

Incident

May 3, 2025

Manual driving shaft slips out of 6th gear while driving affecting the driving speed and increasing RPMs.

NHTSA ID

11647564

Incident

Mar 9, 2025

As I was driving my check engine light turned and also another message saying “Drive-Start control malfunction”. A few second after another light came one showing “Engine coolant Temp high. On 11/24/24 I experienced this mechanical failure as I was driving. I was driving behind another car, where my car suddenly lost power and randomly accelerated almost causing me to crash behind the car in front of me. Thankfully I had time to press on the brakes to prevent me from crashing. I also did some research to see if other drivers also experienced this fault and seems that a lot of people with these Toyota Corolla and RAV4 models. I also found that an active lawsuit is ongoing against Toyota regarding this same issue. This definitely should be something that needs to be recalled as it puts our lives at risks to either crash or even catch on fire due to overheating. My vehicle gets serviced regularly.

NHTSA ID

11627104

Incident

Nov 24, 2024

I got a “Engine Maintenance Required” warning message. I check with the dealer and upon diagnosis told me about a faulty coolant bypass valve which is a common problem for Toyota RAV4 and Corolla. The Toyota Mechanic mentioned that this should have been a recall issue. The cost to repair was unbelievable considering it will take only a short time to do. BOught the parts and will have it installed somewhere where the labor is cheaper. Since it is a common problem, the manufacturer should recall this issue, replace the faulty part and pay the cost of everything.

NHTSA ID

11623561

Incident

Oct 28, 2024

The coolant bypass valve failed in my car causing “engine maintenance required” message but no CEL code. Took it to the dealership where they determined failed component and replaced it. The car only had about 71,000 miles and with a engine cooling system failure it could potentially cause further damage.

NHTSA ID

11620018

Incident

Oct 9, 2024

The alert for the Bypass Coolant Valve came on and cost $800 to replace. As this is a common issue across multiple Toyota models, this should be a recall.

NHTSA ID

11615343

Incident

Sep 14, 2024

My car has warning light of the engine maintenance required and I had to change my electrical water pump when I first got the car and the dealership doesn’t cover the issues

NHTSA ID

11614309

Incident

Sep 11, 2024

Coolant bypass valve failed

NHTSA ID

11613344

Incident

Sep 15, 2022

Engine coolant bypass valve

NHTSA ID

11612464

Incident

Sep 2, 2024

At around 36,500 miles, my Toyota Corolla began experiencing issues with the coolant bypass valve, leading to engine overheating. This malfunction has significantly impacted my ability to drive safely, as the vehicle displays a notification every five seconds, obstructing my view of the digital speedometer and making it difficult to accurately monitor my speed. The issue was not indicated by a check engine light but a persistent "Engine Maintenance Required" message. This defect poses a serious safety risk, and there's a potential class-action lawsuit in progress regarding this very issue, suggesting Toyota might have known about the defect but failed to disclose it. The faulty component is not available for inspection upon request. As more people began to experience similar circumstances, it could lead to fatalities. Other participants to the forums says the issues start when their covered warranty expires. Within these forums there's a inconstancy of service centers honoring fixes, with no cost, knowing that there is an issue. I took the car to both a third-party mechanic and an authorized dealership, and both confirmed the problem. I was quoted $732.85 for the parts and labor within my area. I also called Toyota Global which I was told "a low mileage car shouldn't be having this issue", however, there are countless of forums saying otherwise. **Toyota Models Affected** 2019 Toyota RAV4 2020 Toyota RAV4 2021 Toyota RAV4 2022 Toyota RAV4 2023 Toyota RAV4 2019 Toyota Corolla 2020 Toyota Corolla 2021 Toyota Corolla 2022 Toyota Corolla 2023 Toyota Corolla [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11611677

Incident

Aug 2, 2024

I am up to date with all my maintenance but at 67k miles I had a message stating “Engine Maintenance Required” message on my dashboard. I took it to the dealership and they identified the cooler bypass valve needed to be replace, apparently this is a common issue and has not been addressed by Toyota. Plus it’s difficult to find the part that needs to be replaced. There was no check engine light, and everytime I turned on the AC the engine maintenance required message would pop back up. If this is a known issue Toyota needs to make this issue public and parts available.

NHTSA ID

11608990

Incident

Aug 9, 2024

I got a “Engine Maintenance Required” warning message. I check with the dealer, the dealer inspected and told me about a faulty coolant bypass valve which the dealership told us a common problem for Toyota RAV4 and Corolla. The dealer did a diagnostic and found that engine coolant bypass valve circuit short to battery - (P268115). They asked me to order the part. A faulty coolant bypass valve risked my vehicle of a failure of the cooling system and so the engine. I had to pay $113.40 for the diagnostic and $331.75 for repair. Since it is a common problem, the manufacturer has to recall and replace the faulty part and pay the cost of the part and labor for replacing the faulty part.

NHTSA ID

11606978

Incident

Aug 7, 2024

Coolant bypass valve is faulty and a lot of people have had this issue. Toyota is well aware of the faulty part and it affects many models and years of cars. They want to charge 800 bucks for an easy fix. It is robbery and could be a big safety hazard if it causes engine to stall while driving

NHTSA ID

11606922

Incident

Aug 1, 2023

All of sudden the Engine Maintenance Required sign popped up on the screen during when I was driving. The sign popped up every time I turn on the car. I took the car to Toyota service immediately and diagnostic showed it was Engine coolant bypass valve circuit short to battery or open.

NHTSA ID

11602984

Incident

Jul 13, 2024

* What failed was engine coolant bypass valve. * Safety was at risk as the failure can lead to engine overheating over time. * it has been reproduced by countless others after their vehicle hits 30k to 70k. *there was a message on the dash about “engine issues and to take to dealer”

NHTSA ID

11601587

Incident

Jul 9, 2024

Engine Coolant Bypass Valve faulty. Charged $176.95 for the dealer to diagnose what is already known issue. The dealer wanted $663 to replace the part. Toyota knows about this issue yet acts like they had to perform $176 diagnose. The car never blew any codes CIL and they say that this particular part doesnt cause a code but had to use a " special" diagnose tool.

NHTSA ID

11595679

Incident

Jun 21, 2024

My service engine came on took to dealership they said my coolant bypass valve no good and iam always have to change out my brake pads on the front

NHTSA ID

11594535

Incident

Jun 15, 2024

Engine coolant bypass valve circuit short to battery or open - code P268115 Engine maintenance alert light appeared after (a day after, and then would not be on, and sometimes turn on, erratic maintenance message) I brought car in for scheduled engine maintenance per Toyota. The Toyota technician advised me to immediately take care of it but does not have the part in stock. This is the Toyota Dealer service in Manhattan Beach, CA.

NHTSA ID

11581098

Incident

Apr 4, 2024

ENGINE MAINTENANCE CAME ON, TOOK IT TO DEALERSHIP AND WAS TOLD THE DIAGNOSTIC TEST SHOWED COOLANT BYPASS VALVE. APPARENTLY THIS IS A RECURRING ISSUE AND IF NOT TAKING CARE OF, IT COULD CAUSE MAJOR PROBLEMS. I WAS TOLD THE PART IS $200 PLUS AND LABOR IS $500 PLUS. THIS SHOULD BE A RECALL ISSUE AND FIXED FREE OF CHARGE BY TOYOTA. IN DOING A GOOGLE SEARCH, SEVERAL COMPLAINTS ARE LISTED REGARDING THIS ISSUE. THE GENTLEMAN AT THE DEALERSHIP WHERE I TOOK MY CAR STATED HE HAS DONE SEVERAL VEHICLES RECENTLY WITH THIS ISSUE. I DON'T THINK USE AS A CUSTOMER SHOULD HAVE TO PAY FOR THIS KNOWN ISSUE BY TOYOTA. I'M ALSO STILL WAITING TO GET THE RECALL FIXED ON MY MOTHER'S TOYOTA RAV4 RECALL WHICH I RECEIVED NOTIFICATION ON BACK IN EARLY 2023. THEIR EXCUSE IS NOT PARTS AVAILABLE. SO IN THE MEAN TIME, IF THE VEHICLE CATCHES FIRE, THEY SAY OH WELL. I AM OVER TOYOTA GETTING AWAY WITH THIS.

NHTSA ID

11579436

Incident

Mar 25, 2024