Toyota Corolla check engine light comes on

Filed Oct 27, 2026 · Driver assistance, Electrical · FL

I was driving the car and expressway. The car was making a sound. The car did not have an engine light on it. Also, the car just switched gears. I pulled over and II was driving the car and expressway. The car was making a sound. The car did not have a engine light on it. Also, the car just switched gears. I pulled over and I tried to park the car, but it wouldn’t allow me to park the car. Which it is left in drive with the emergency brake still in place .and if you let the break down the car will roll . . I got it looked at and now they are saying it’s the transmission, but it never had a light on to identify what was wrong with the car. There was no codes on the car.

Filed Aug 6, 2026 · Engine · CA

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 this but failed to repair or notify me of it. I would have immediately brought my car in at 97k if. I had known. This puts not only me but my 3 kids and entire family at risk every time i drive. This is known to the dealership and they been taken to court for failures to notify customers of this known defect. It’s been inspected by Toyota the last time I took it in about a week ago at 104k miles.

Filed Jul 22, 2026 · Airbags, Electrical · CA · crash · 3 injuries

While driving at highway speeds, the vehicle suffered a sudden, simultaneous failure of multiple electrical and safety systems. Without warning, the Check Engine light, VSC (Vehicle Stability Control) light, Traction Control light, and SRS Airbag light all illuminated simultaneously on the dashboard. Immediately upon illumination of these fault lights, the vehicle lost computer-assisted stability control, began swerving violently, spun out of control, and collided with another vehicle, suffering severe front and rear impact damage. The vehicle was declared a total loss. Despite severe impact forces to both the front and rear structure, the SRS airbags completely failed to deploy. Both occupants sustained injuries due to the impact and lack of airbag protection. The simultaneous illumination of the airbag and VSC lights prior to impact strongly points to a sudden failure of the steering column spiral cable (clock spring) assembly—a known safety defect under the federal safety agency Recall Campaign 14V‑168 (Recall E0M). The illumination of the airbag fault light appears to have deactivated the SRS system prior to impact, leaving occupants unprotected during a major collision. The vehicle is currently held at IAA San Diego and contains unread Event Data Recorder (EDR) crash data proving the pre-impact system shutdown. I request that the federal safety agency review this safety system failure and airbag non-deployment. CHP Crash Report #[9645-2026-02967] and Insurance Total Loss Evaluation are available upon request.

Filed Jun 15, 2026 · Tires · CA

Over the past year and a half I’ve had to deal with unknown reasons for at least 13 tire problems. And one of those problems was a complete blow out on the highway. When I went to get my spare tire and change it there wasn’t anything in the trunks spare compartment. I called the dealership and they said they don’t do that (meaning they don’t provide the car with a spare). I was very confused and stressed. I felt played and wasn’t made to feel confident in this purchase. That not the only thing. The electric system does pretty much whatever it wants. Changes my music, gives advice for things we didn’t ask and the volume is always highering itself and lowering just whenever it chooses. The airbag light has been on most of the time letting me know the passenger airbag isn’t on or working properly. The engine light has been on for at least four months now. I understand Warranty for regular checkups and maintenance but this feels a bit more serious than me making sure I’ve secured my warranty. I have called and taken the vehicle into both Toyota of Visalia and Toyota of Selma where I got financing for the vehicle. Toyota of Visalia wasn’t very much help at all and preceded to talk down to me. Toyota of Selma keeps giving me the run around and telling me different things about my warranty. This car isn’t worth the trouble my credit score goes through to secure it each month just to have something else fail me in it. At this point I’m trying to figure out how I’m going to replace the DC to DC because the car died a week ago and hasn’t turned back on since. And yes I’ve tried jumping the battery already. I’ve only had this car a year and a half. I wasn’t made aware of any issues with it when I drove it home that day. It was a nice ride home but less than a couple months I was already having questions about its performance. I really wish this complaint would even help but I’m just writing to probably waste my own time.

Filed May 20, 2026 · Transmission · CA

I was driving on the highway and the transmission gave completely out!! with no warning! No check engine light no error message. Car only has 160000 miles on it, if i wasn't calm as I was that could've been lethal!!!!

Filed Apr 24, 2026 · Engine, Fuel system · 59,000 miles · PA

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 (TCM). The mechanic associated the failure with the federal safety agency Campaign Number: 20V682000 (Fuel System, Gasoline) and referred the contact to the dealer for assistance. Several dealers were contacted, and the contact was informed that the VIN was not included in the recall. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 59,000.

Filed Mar 30, 2026 · CA

After the car is warmed up after driving for a few minutes, I stop at a red light and the car's RPMS dip from 700 rpm idle to 500ish rpm, when it starts shaking. Then the RPM would go back up to 700 rpm. This only ever happens when in Drive and foot is on the brake. If I shift to neutral or park it goes away and idles normally at 700 or higher RPM. A/C on or off has no effect on this. Oddly enough, if I turn on the DRLs or full headlights, the RPMs don't dip. I feel like it will only be a matter of time before the RPM will dip low enough to the point where the engine will die on me. This is a safety concern. No check engine lights. I have cleaned the MAF sensor, changed engine air filter, cleaned throttle body, changed PCV valve, cleaned injectors, run fuel injector cleaner through the gas tank, replaced my engine mounts. Still, the issue persists. I have no idea why.

Filed Mar 10, 2026 · Transmission · 76,099 miles · CA

The contact owns a 2018 Toyota Corolla. The contact stated that while driving 75 MPH, there was an abnormal whining sound coming from the vehicle, and the vehicle failed to accelerate while depressing the accelerator pedal. The contact stated that the tachometer was raised to high levels while exiting the highway. While at a stoplight, the vehicle hesitated while accelerating with the check engine warning light illuminated on the instrument panel. Due to the failure, the vehicle was towed to an independent mechanic. An OBD2 scanner was used to diagnose the vehicle, and DTC: P0741, P075B, P1604, P2757, P2820(X4) were retrieved, which were related to the torque converter. The contact was informed that the CVT transmission needed to be replaced, and the contact was provided with an estimate for the repair. The manufacturer was notified of the failure but denied any assistance. The vehicle was not repaired. The failure mileage was 76,099.

Filed Jan 18, 2026 · Transmission · CA

Hello, on October 14th 2024 I reached out to Toyota over a “engine maintenance required” message on my dash along with a check engine light. I took it to the local toyota dealership in Downey CA. After testing the Engine coolant bypass valve B Control circuit high failed. Toyota replaced the valve on October 21st 2024. Issuing me a 1year/12,000 mile warranty. On Thursday January 15th 2026 the drive start control malfunction warning light along with a P26AE error code displayed. Upon testing the engine coolant bypass valve B control circuit high failed again. Speaking with Toyota my vehicle VIN is not part of the CSP service campaign they have for 19-23 Corolla models. I spoke with Toyota Corporate and they couldn’t/wouldn’t help. This is a severe safety risk as the valve failed at a moments notice with no warning or symptoms. Additionally it can lead to engine stall and catastrophic damage, risking other drivers if engine loses power. This is an ongoing and recurring issue with RAV4/Corolla/Cross models and Toyota is facing a lawsuit here in California from other drivers with the same problem. I would like for my VIN to be added to the safety recall as Toyota Knowingly replaced the Valve with the same defective part per the technician who fixed my vehicle the first time who warned me this was going to happen again. Thank you for your time and assistance in this matter.

Filed Dec 23, 2025 · Engine, Fuel system · DE

after fueling strong fuel smell in vehicle within 100 miles check fuel cap light came on. next day check engine light came on. made appointment at dealership . dealership performed evap smoke test which found smoke coming from top of fuel cell. installed fuel pump ring and evap hose clip. performed evap test and smoke test -passed cleared codes. got car back next day less than 50 miles later ck engine code and fuel cap and fuel odor back.