Toyota Corolla misfire problems

Filed Jun 3, 2026 · Seat belts · FL

Within a week of buying my vehicle in May of 2021 I went to Clearwater Toyota where I bought the vehicle from and complaining about the three seat belts in the back malfunctioning. When nobody is sitting in the backseat they sound off as if somebody is sitting there. I know that there is a recall on the front seat belt sensor doing this same issue for the Toyota Corollas but everyone I have spoken to that owns a 2021 Toyota Corolla complains about the back seats doing it as well the sensors misfire or sound off every hour as I'm driving at least once an hour. As an Uber Lyft driver I am concerned about my passengers in the backseat wearing the seat belts and the seat belt malfunctioning due to the sensors malfunctioning since I bought the vehicle in May of 2021. Any of the above questions I would have to stay unknown.

Filed Aug 17, 2025 · Engine, Fuel system · CA

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 the federal safety agency investigate this issue in connection to the reported coolant bypass valve defects affecting 2019–2023 Toyota Corolla models.

Filed Nov 19, 2024 · Brakes, Driver assistance · IL

Multiple malfunctions causing the engine to misfire and eventually seize completely. Toyota never found out the issue but the engine failed. The suspect poor build quality. The engine, brake collision system, fuel pump all went out. Car was rough idling for about two weeks before the engine completely failed. Toyota has lemoned it.

Filed Jul 19, 2024 · Engine, Fuel system · FL

Fuel Injector failed, causing the engine to run extremely rich, misfire, and cause severe drivability issues. Issue occurred just outside vehicle base warranty. Problem was verified and confirmed by vehicle dealership. MIL was illuminated when drivability issue and malfunction started.

Filed May 9, 2024 · Engine · CA

ENGINE, POWER TRAIN, IGNITION COIL. Code P219A BANK 1 AIR-FUEL RATIO IMBALANCE. Code P0302 CYLINDER 2 MISFIRE DETECTED. While in motion will shake, jerk, self-fluctuate speed, and lose power up to 100 % if the gas pedal is pressed past a certain point. I have no doubt it is a matter of time and consequence before great damage and bodily injury to myself and others occur. Yes twice been to the repair shop for this issue. Yes. Vehicle was sent by and from a dealership. First, the maintenance required light blinks then is solid. Then the check engine light and track off light are bright and solid. Vehicle first had this issue febuary 28th. Vehicle exact issue but a month later and is currently in the same state. Vehicle has been in the repair shop two times and will need to go again if I keep it.

Filed May 7, 2023 · Transmission · VA

My car went into Limp mode at high way speeds. the transmission is faulty. it feels like a misfire. the transmission does not shit out of 1st.

Filed Oct 19, 2021 · WA

My auto mechanic and I, after extensive diagnosis, have confirmed that the Pulse mileage/route tracking device that Metromile car insurance had me plug into the computer port of my 1998 Toyota Corolla LE is failing or has failed, and this caused a potentially disastrous situation to develop w/my car engine. When starting the engine from cold, it would cause repeated misfires, causing the rpms to drop quickly, then surge up, before settling into the proper cold idle speed. This would repeat itself every few seconds until the engine warmed up completely (usually about 10 minutes). When in gear, the car would buck violently, putting repeated, extreme stress on the drive train; but even when in neutral gear, two mechanics have told me it could easily destroy my crankshaft bearings and/or other parts of the drive train. We have now tested this five times briefly in neutral gear. When we plug the pulse device in the problem occurs immediately. When we remove the device the problem goes away. We can also insert the mechanic's diagnostic device into the computer port and everything works fine. The new "Pulse" device was received as a replacement for the old one I had been using, that had worked fine, and was first inserted into the computer port on 8/9/21. So it worked fine for about a month. Supposedly the only difference between the old and new devices is that the new one uses 5G instead of 4G to receive and transmit data.

Filed Mar 19, 2021 · Transmission · 29,000 miles · NC

Vehicle is jerking and shuttering while in motion between 4-20mph cold or hot and A/C on or off. This occurs before braking and seems to jerk forward. Tends to occur more often in parking lots. This issue is accompanied by aggressive engine shaking and all passengers can feel the rough idle. This issue is progressive getting worse with time over the last few months. Took vehicle to dealer, spark plugs was the assumed issue from technician. First diagnosis was spark knock. Replaced spark plugs, did not fix the problem. Second diagnosis was "off center steering wheel causing stability control to override driver throttle inputs and lead to jerky operation" case is ongoing and a resolution hasn't been provided or solved. Toyota corp. Is opening an investigation/case.

Filed Feb 12, 2021 · Engine, Transmission · 44,092 miles · IL

I drove to toyota arlington for tire rotation on 2/4/21 and the car was running fine. Odometer was 44091 miles. After leaving the dealership, I drove about a mile then the engine lost power. The car could only go about 5 MPH. The car jerk up and down as if I drove on the rail road tracks. The check engine light, trac off and red steering wheel symbol lit up but not flashing. I went back to the dealer right away. I turned the car off, the attendant turned it back on. The check engine, track off and steering symbols were off. The code was not saved, so on 2/8/21 the independent shop could not duplicate the problem (44132 miles). On 2/12/21 the same symptoms came back at 44175 miles. This time the check engine light flashing, track off light and steering wheel symbols came on but not flashing. My wife turned the car off, waited for a few minutes then turned it on. The check engine light was off but the trac off light remained on. In the past, after I turned the car off and turned it on one click, the symbols were on, and when the ignition turned on, the symbols were off. This is a safety issue. The car also smell like a burning tire. We were driving about 35 MPH on lane number 1 (next to yellow lines median) on a county 4 lanes highway. The car slowed down to about 5 MPH, jerk up and down and the car vibrates and it happened twice in a week. The car is only 4.5 years old and only 44175 miles. The second independent shop read the code as p0301, misfired. He suggested to bring the car to the dealer for toyota to fix it under powertrain warranty. No repair has been done yet.

Filed Sep 12, 2020 · Fuel system · PA

From the federal safety agency website: jan 13,2020 manufacturer recall number 20ta02 the federal safety agency recall number 20v012 recall status recall incomplete summary the subject vehicles are equipped with a low-pressure fuel pump which may stop operating. If this were to occur, warning lights and messages may be displayed on the instrument panel, and the engine may run rough. This may result in a vehicle stall, and the vehicle may be unable to be restarted. Safety risk if a vehicle stall occurs while driving at higher speeds, this could increase the risk of a crash. On 09/12/2020 I called the dealership to have the fuel pump replaced. They could not schedule me before 10/12/2020 due to the fact that the fuel pump is on back order. Toyota knew since at least january 2020 that there was a problem with the fuel pump. In september 2020 on back order?!