2020 Kia Sedona: check engine light

Filed Jan 2, 2026 · Engine, Transmission · TN

March 2024 just before hitting 100,000 miles I started having oil consumption issues. Current milage is 137,300 About 10,000 miles ago my check engine light came on. I took it to an auto parts store and it was reading bank 1 O2 sensor. I took it for an oil change and never scheduled for the sensor replacement due to life events. I took it in for another service About 5,000 miles ago. At around 2,000 miles after the service the motor started stalling and sounded horrible. I took it to the dealership and it was 4.5 quarts low on oil. Took it back at 1,200 miles after top off and it was 2.5 quarts low. Started the new motor process which wasn't covered on the extended warranty due to manufactur defect. It cost me 500.00. Before the new motor was in my van started getting me stranded places. Motor wouldn't turn over at all. Got it started went to auto parts store and it was reading 4 bad sensors in bank 1 and 2 (O2 and air intake on the motor). Finally got it to KIA for the new motor told them about they sensors they were supposed to check/replace them when they put the new crate motor in. Picked my van up 3 days ago. I asked when they called if the engine light was off. They called me back several hours later and said yes. Picked it up at 5 pm 3 days ago. By 8am the next morning the engine light was back on. It's scheduled for 9am Monday. The van has now gotten me stranded 2 times in 3 days. Auto parts store ran the computer and the same 4 sensors are still showing bad. Sensors are in bank 1 and 2. The report on the old motor showed cylinder 1 and 2 oil fouling on the spark plugs (replaced at 100,000 miles by dealer) and excessive oil leakage in cylinder 1 and 2 into the crank case due to carbon stuck piston rings. I was told before the motor replacement that the KIA cares warranty may not cover these sensors. Even though the sensors are going out because they are gunked up with 7 quarts of oil their motor used and they didn't go out until the issue started.

Filed Nov 24, 2025 · Engine, Fuel system · SC

Check engine light came on all of a sudden. Smell of exhaust/gas coming from car. Took car to the dealership to get the cause of the check engine light coming on. Dealership said it came back 02 sensor bank 2 and exhaust gasket to header.

Filed Sep 9, 2025 · Engine · SC

Problem: The Vehicle Slows down all of a sudden on the middle of the road from around 70 miles to 10 miles, then slowly drives at 15 or 20 miles speed. Safety Concern: On the Interstate Hwy, this has happened many time. Fortunately without any accidents. Very recently also this happened and I do not drive the vehicle out now, since it does not accelerate. Reason: The failure of the accelerator Pedal. Symptoms: The "Check Engine" light comes one and the Engine abruptly slows down. First time it occurred: I a year after the Vehicle was bought -- 15000 miles -- Company did a Warranty replacement after almost a month (Multiple Visits). Second time it occurred: After 4 years-- 50000 miles -- company did a Warranty Replacement after a month (Multiple visits). Third time it is occurring: After 5 years -- 63000 miles -- Company claims it is no longer a warranty issue and also it is a different problem that is causing the same issue and charging me $5000 for repairs. Present Situation: The Vehicle is unusable and since it is the 3rd time this is happening, there is a serious issue with the Vehicle and I am worried about my/my families Safety. A replacement of the Vehicle with the fully tested one (With no such safety issues)and with guarantee that the Company/Its dealers will service the vehicle without delay will be helpful. Available details: All the correspondence from the first time this issue happened (complete correspondence with the company of my safety and replacement of the vehicle) is available. Also my Service records with the Dealerships and the warranty issues are also available. The False charges by the dealers is also available. The recent visit to another authorized Car shop and their report that this issue is the same old Accelerator pedal issue is also available.

Filed Feb 8, 2024 · Electrical, Engine · 79,000 miles · FL

The contact owns a 2020 Kia Sedona. The contact stated while driving 40–45 MPH, the check engine warning light illuminated. The contact stated that while driving at an undisclosed speed, the headlights and taillights became inoperable. The contact also stated that the oil level was low after checking the dipstick. The driver's side window was stuck in the down position. The contact depressed the window button, but the window failed to roll up. The vehicle was taken to an independent mechanic, and the contact was informed that there was a leak in the trans axle boot, and the 02 sensor and trans axle boot were replaced. The vehicle was taken to the local dealer, where it was diagnosed that the headlights and taillights needed to be replaced. The dealer performed an oil pressure test, which indicated that the oil level was a 1/2 quart low. The vehicle was repaired, but the failure recurred. The contact stated that there was water inside the headlight housing. The vehicle was taken back to the same local dealer, and the contact was informed that there was no warranty coverage on the vehicle. The manufacturer was contacted, but there was no additional assistance provided. The failure mileage was approximately 79,000.

Filed Aug 22, 2021 · Electrical · FL

Driving down the interstate at 70mph and the vehicle suddenly began to brake and the forward collision warning light illuminated along with the check engine light. The car stopped on the interstate and this happened at 1:15 am and it was in a rural area and it was pitch black outside. Luckily no one plowed into the back of the car. Was able to restart the car and was barely able to get it to the side of the road before it shut down again. 6 miles to the nearest exit attempted to get the car off the highway. After several attempts and turning off every electric accessory and sensor was able to get the car to the exit. KIA toed the car to the nearest dealership the next day. They discovered that the wiring harness was chewed up in several places and caused numerous shorts circuits and malfunction codes. I own several vehicles that are parked in the same area and this is the only one that has chewed up the wiring. My daughter and 2 of the grandchildren were in the car when this happened and they could have been killed if someone had plowed into the back of them at 70+ mph. This is a 2020 Kia Sedona and I'm being told that this is not covered under warranty. There is something wrong here seeing how this only happened to this car and not my other cars nor my boat. The car is in the shop and will not be ready for a week or two and this happened more than 350 miles from my house. I have lost the use of this car and Kia refused a rental because they said it was not a warranty issue. I know Kia is having this same issue with many of their vehicles. Does it take people to die for this to be addressed? I hope not. My family could have easily been killed because of this. Luck is probably the only thing that prevented a tragedy here. The car has not been repaired yet so I don't have any documents to upload yet.