2010 Toyota Prius: check engine light

Filed Mar 6, 2026 · Fuel system · AR

For the last 14 years, a check engine light has been coming on telling me that I have a fuel canister emissions leak because the canister is cracked. In 2016 2.87 million Toyota Priuses were recalled with the fuel canister crack issue. For unknown reasons Toyota has refused to fix this dangerous issue and has told me that my car was NOT included in the recall. I do not believe Toyota is being honest in their continued denial of this dangerous issue and excluding my 2010 Toyota Prius. This issue has been ongoing since the car was new.

Filed Dec 30, 2025 · Brakes · TX

On November 25, 2025, at approximately 11:45 p.m., our 2010 Toyota Prius experienced a braking system malfunction during normal operation. The brake pedal required significantly increased effort and the vehicle exhibited reduced braking performance, indicating a loss of brake power assist. The vehicle required increased stopping distance, creating an immediate risk of a collision. At the time of the failure, multiple warning indicators illuminated simultaneously, including the brake system warning, ABS warning, check engine light, battery warning, steering warning, tire pressure warning, and vehicle stability control/slip indicator. There were no warning lamps or abnormal symptoms prior to the failure. The failure was determined to involve the brake booster pump assembly, a component responsible for maintaining hydraulic brake assist pressure. This component is known to experience internal accumulator housing degradation, which can allow nitrogen gas migration into the brake fluid and result in partial or complete loss of brake assist. The affected component remains available for inspection. Following the incident, an authorized Toyota dealership inspected the vehicle and reproduced and confirmed the condition. Service records indicate the brake booster pump assembly had previously been replaced under a Toyota safety recall. Despite this prior recall repair, the same component failed again after approximately 41,000 miles of service, demonstrating that the recall remedy was ineffective. As a result of this failure, the vehicle was rendered unsafe to operate. Despite dealer confirmation that the malfunction involved a previously recalled safety component, corrective repairs were declined, with warranty limitations cited rather than addressing the repeat safety-related failure.

Filed Dec 2, 2025 · Brakes, Fuel system · NC

The contact owns a 2010 Toyota Prius. The contact stated that while driving 70 MPH, the vehicle jerked, and the vehicle failed to accelerate as intended while depressing the accelerator pedal. Additionally, the steering wheel seized, and the vehicle stalled. The contact pulled over to the side of the road, opened the hood, and disconnected and reconnected the battery terminals to reboot the vehicle. The contact stated that a yellow triangle warning light and the check engine warning light were illuminated. The message "Check Hybrid System" was displayed. The contact was able to restart the vehicle; however, the vehicle failed to exceed 65 MPH while driving. The ABS warning light was illuminated. The contact took the vehicle to Auto Zone and O'Reilly's; however, no cause for the failure was found. The vehicle was then taken to the dealer. The contact was informed that the failure might be an ABS system failure. The vehicle was not repaired due to the cost. The contact stated that the failure first occurred years ago, and the failure persisted. The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed Jul 12, 2025 · Fuel system · AR

My 2010 Toyota Prius has had a charcoal fuel canister leak since day one. 2.9 million Prius cars were recalled and Toyota says my car is NOT included in the recall but has the same issue of the other Toyota Prius that were included? Check engine light has never gone off. Upon fueling a strong odor of gasoline is detected and I am very worried about the car catching fire. Toyota needs to be held accountable and forced to fix this safety related problem.

Filed Jun 30, 2025 · Brakes · 94,000 miles · HI

The contact owns a 2010 Toyota Prius. The contact stated while driving 45-50 MPH and depressing the brake pedal, the ABS, the traction control, and the check engine warning lights were illuminated. The contact stated that the vehicle experienced reduced braking power and the vehicle failed to respond as needed. The contact stated that upon engaging the brake, the vehicle decelerated, and the contact pulled to the base of an inclined side street, where the vehicle was able to stop. The contact was able to safety park and inspected the vehicle. The contact was able to drive to the residence at slow speeds. The vehicle was taken to the dealer, where it was diagnosed that the brake booster and master cylinder had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 94,000.

Filed Jan 25, 2025 · Engine · NY

I own a 2010 Toyota Prius hybrid 4 door sedan. I am the second owner of the vehicle. I purchased it in 2018 from a used car dealer. The vehicle ran well up until 2022 where a “check hybrid warning would appear on the dashboard along with a yellow triangle and service engine light would come on and the vehicle accelerator would not respond and the car would have to glide to the side of the parkway. This problem would happen when the car speed is between 60-70mph. It is very dangerous to lose power on the highway because many times there is no where to pull over. In 2024 I changed the water pump because the fault code on the cars built in diagnostic code read error “P216B” which is the cars electrical water pump signal. I researched it on google and a lot of 2010 Prius owners are complaining of the same thing. Also the changed water pump from April 2024 died again in January 2025. It is very scary that the cars accelerator pedal goes unresponsive and all the fault lights come on. My vehicle has 155,000 miles runs great and my family loves the 40mpg it gets. However, this stalling problem is being ignored by Toyota and could lead to a fatal car accident if not recalled by the manufacturer. To conclude, I would like for your office to possibly conduct an investigation with the 2010 toyota Prius hybrid for this ongoing problem that the company is ignoring. This is a serious issue and can possibly lead to a fatal accident. THANK YOU FOR HEARING MY COMPLAINT AGAINST TOYOTA.

Filed May 10, 2024 · Fuel system · 152,000 miles · IL

The contact owns a 2010 Toyota Prius. The contact stated that while driving at an undisclosed speed, the vehicle stalled. The check engine warning light and the check hybrid warning light illuminated. The vehicle was taken to the dealer. The contact was unaware whether the vehicle was diagnosed. The vehicle was repaired under the federal safety agency Campaign Number: 18V684000 (Hybrid Propulsion System). The contact stated that after the vehicle was repaired the failure recurred. The contact stated that the vehicle had not been repaired as the recall repair stated. The manufacturer was made aware of the failure but offered no assistance. The failure mileage was approximately 152,000.

Filed Mar 19, 2023 · Brakes, Fuel system · 190,000 miles · FL

I was driving in my neighboorhood and as I went up the wall bridge my acceleration stalled and my ABS light, Check engine light, and check hybrid system light came on simultaneously and started beeping. At the same time, I lost my braking ability completely. I had to swerve off to the grass in the hopes of not hitting turning traffic at the stop sign. Luckily, it stopped before doing any major damage to anything. Thankfully, I was close to home and was able to put it in my driveway safely. The check engine light then cut itself off, but my brakes remained completely nonfunctional. If this had happened on the highway or a busy road I'm sure it would’ve been much worse.

Filed Jan 24, 2023 · Electrical · GA

I had just gotten back in my car from a quick store trip. My prius turned on like normal but soon after when I was driving different kind of warning lights turned on. My steering was affected ,the car slowed down considerably to the point I was almost rear-ended. The triangle of death, check engine, brake and steering lights all came on with the check hybrid system warning. Before this i had no prior issues with my car. I had it checked by an independent mechanic who states it is the inverter that caused this

Filed Mar 23, 2022 · Engine, Fuel system · CA

Traveling at freeway speed just after midnight, the "check engine" light came on. Less than one minute later, the "check hybrid system" alert came on, with an exclamation mark inside of a yellow triangle symbol displayed. The vehicle instantly had no power when the accelerator was depressed. The vehicle coasted to a stop and would not shift into drive. The vehicle was towed to our home. Upon delivering the vehicle to our home, the tow driver used an emergency battery jump start device and the vehicle was able to shift into drive and be driven into the garage. The 12 volt battery was replaced the next day and the vehicle no longer exhibited any disfunction. This was an unexpected event with no warning that the 12 volt battery was in need of replacement. It could have resulted in a serious collision, if the freeway had been more congested, as the vehicle had been immediately driven 2 lanes over to the nearest exit, and came to a stop just after exiting, safely at the side of the road. This is a very dangerous safety condition that should have had some type of alert that the simple 12 volt battery system was in danger of failing, causing a catastrophic failure of the engine and power train. Or, the car should simply not be able to drive, if the 12 volt battery is that low, to ensure passenger and community safety. Prime example: Toyota Prius has a warning alert that the key fob battery is low. The warning gives you a couple of weeks to replace the battery, and repeatedly displays the warning whenever you power up the vehicle.

Filed Oct 8, 2021 · Electrical, Fuel system · SC

Last week I check hybrid system message appeared on the screen and orange triangle with check engine light. I took it to the shop and they said that there are code P0A94 wich is related to the inverted and that is needed replacement. I saw that there was recall on inverter and want to see if I can get it replaced. Thanks

Filed Sep 20, 2021 · Brakes, Electrical · 115,001 miles · NC

The contact owns a 2010 Toyota Prius. The contact stated that while driving, the brake lights, ABS, and check engine warning lights illuminated. There was an abnormal noise detected. The vehicle was taken to the local dealer and diagnosed that the brake booster assembly needed to be replaced. Additionally, the contact was informed that the vehicle was not safe to drive. The manufacturer was notified of the failure and referred the contact to the federal safety agency. The failure mileage was approximately 115,000. The VIN was not available.