2014 Hyundai Sonata: check engine light

Filed Oct 5, 2026 · Engine · UT

I was driving on the freeway about 100 miles outside of Boise, ID when the vehicle went into limp mode and a flashing check engine light came on. I had it towed to the Hyundai dealership in Boise where they ran a diagnostic check and it came back with a P1326 code, which is the issue related to the engine/ball bearings. They said it passed the bearing clearance test (BCT) so they updated the software and gave the car back. I picked it up a week later and while driving it from Boise to Salt Lake City (where I live), it went into limp mode again with a flashing check engine light. This happened about 100 miles north of Salt Lake City. I had it towed to a dealership in Murray. They indicated it passed the BCT again, but they replaced the knock sensor and did an oil change and gave the car back. I picked it up, and the next day, while on the freeway, the same thing happened again. I took it back to the dealership. They indicated the knock sensors they just installed the day before needed to be updated, so they updated the software for the knock sensors. I just picked it up, and within 45 seconds of being on the freeway, it went right back into limp mode with the flashing check engine light. This has happened 4 times now, on the freeway forcing me to immediately get over, and I have almost gotten into two separate accidents because of this. Hyundai says they will not replace the engine because it keeps passing the BCT. The vehicle is not safe to drive and it is likely causing irreparable damage to the other systems of the car.

Filed Jul 13, 2026 · Engine · MO

The check engine lights blinking, it overheats and it shuts down.

Filed May 31, 2026 · Engine, Fuel system · PA

I am submitting this complaint regarding a serious safety issue involving my Hyundai Sonata. While driving under normal conditions, my vehicle suddenly entered a low-power ("limp") mode without warning. The vehicle would not accelerate beyond approximately 30–35 mph, creating a potentially hazardous situation in traffic. At the same time, the check engine light began blinking. The sudden loss of power significantly reduced my ability to maintain traffic speed and safely maneuver the vehicle. This condition could have increased the risk of a rear-end collision or other accident. I brought the vehicle to an authorized Hyundai dealership (Fred Beans Honda Of Abington PH# 215‑392‑9020) for diagnosis. The dealership confirmed that the vehicle stored Diagnostic Trouble Code (DTC) P1326, related to the Knock Sensor Detection System (KSDS). According to the dealership, the vehicle entered limp mode as a result of this fault. The abrupt reduction in vehicle power and speed occurred without sufficient warning and created a safety concern. I am reporting this incident so that the federal safety agency can investigate whether this condition represents a broader safety defect affecting Hyundai Sonata vehicles equipped with the KSDS system. Vehicle Information: Make: Hyundai Model: Sonata Model Year: 2014 I request that the federal safety agency review this issue and evaluate whether additional action is warranted regarding vehicles experiencing DTC P1326 and associated limp-mode operation.

Filed Mar 27, 2026 · Engine · GA

The contact owns a 2014 Hyundai Sonata. The contact stated that the vehicle failed to start. The vehicle was towed to the residence and was started. The contact stated that the failure was intermittent. The contact stated that while driving at an undisclosed speed, the vehicle stalled. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with turbo charger failure. The contact was informed that the turbo charger needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was not contacted. The failure mileage was unknown.

Filed Jul 28, 2025 · Engine · 136,000 miles · GA

The contact owns a 2014 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the connecting rod bearings, resulting in damages to the engine. The vehicle was not repaired. After investigating the failure, the contact related the failure to the federal safety agency Campaign Number: 17V226000 (Engine and Engine Cooling); but the VIN was not included. The manufacturer was notified of the failure, a case was opened for repair assistance. The contact was later informed that the assistance request was denied on the grounds of poor maintenance history. The contact stated was not the owner of the vehicle during the time cited by the manufacturer. The failure mileage was 136,000.

Filed Jul 15, 2025 · Fuel system · FL · fire

After having work done to repair the head gasket and spark plug. I was on mile ~300 after repairs and was nearing to fill up at a gas station, I started losing power and notice the check engine light was on and Gas smell filled the cabin. When I stopped the hood started smoking and there was a fire under the engine cover. My Vin is not listed on the fuel line recalls and I believe this is an oversite as it lists, faulty High Pressure hose can rupture and cause engine fires and that is exactly what happen in my case. I believe this Vin was Overlooked and I need the repairs complete. I have not completed any repairs because I believe this should have been recalled.

Filed Jul 9, 2025 · Engine · MD

My engine seized and I lost power. This is the second engine this has happened to. I was given a extended warranty, but Hyundai is refusing to pay for a new engine. The mechanic advised me they are replacing engines three times a week. Mine was denied even though my engine only has 76,000 miles and my warranty is still good. This engine problem should be a new recall since the same problem is still occurring. The engine light did come on blinking. When I took it to the dealer. They knew the problem before looking at my engine since so many others need to have thiers replaced. The dealership confirmed i need a new engine. They made me send in my oil changes. They were upset I didn't have any oil receipts for my previous engine even thought it was replaced at a Hyundai dealership the first time. Consumers should not have to replace two engines. This is a safety concern with it losing power so quickly.

Filed Jun 18, 2025 · Engine, Fuel system · TX · fire

Engine light is blinking and put safety of my family in danger. I called the close Huyndai dealer also I have a case number. However, it takes forever for them to answer. I only have this car. I am driver and this how I make living. I have no choice in driving this recall vehicle and kill my self and my family. No body care!

Filed Jun 18, 2025 · Transmission · IA

Vehicle's engine seized completely at 75 MPH on the interstate. No warning lights or abnormal noises were present before catastrophic failure, and the car has been serviced recently. CEL came on at time of failure, throws code P1326. Car rapidly/dangerously decelerated, would have crashed if not driving in the Leftmost lane of travel.

Filed May 7, 2025 · Engine · CA

While driving my 2014 Hyundai Sonata on [XXX], the engine suddenly stalled without warning. I was in motion on a public road when the vehicle lost power, forcing me to safely pull over. There were no warning lights, check engine lights, or prior signs of engine trouble before the failure occurred. I had the vehicle towed to a certified Hyundai dealership (Norm Reeves Hyundai Superstore in Cerritos), where I was told the engine failed due to rod bearing failure caused by oil starvation. The dealership stated that the engine needed to be replaced. However, I have maintained the vehicle regularly, with consistent oil changes and maintenance, and I have documentation to prove this. Despite this, Hyundai has refused assistance and claims "exceptional maintenance neglect" without showing inspection photos or detailed evidence. This engine failure fits the exact pattern of a known engine defect already under recall for similar Hyundai models and engines, including issues with oil passages and rod bearings that lead to sudden engine failure. These vehicles have been involved in class-action lawsuits and recall campaigns for this reason. This sudden failure put my safety and that of others at risk, as the engine lost power in traffic without any prior warning. I am requesting the federal safety agency investigate whether this issue is part of the broader defect already under recall, and whether Hyundai is avoiding responsibility by misclassifying valid cases. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 13, 2025 · Engine · 62,000 miles · AZ

The contact owns a 2014 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated, and the vehicle went into LIMP Mode. The vehicle was taken to the dealer, who retrieved DTC code P1326 for the knock sensor detection system (KSDS). The dealer performed a software update, but the failure persisted. The vehicle was taken back to the dealer for an oil consumption test, which the vehicle failed. The contact had an independent mechanic replace the knock sensor and spark plugs; however, the failure recurred. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 62,000.

Filed Jan 20, 2025 · Fuel system · CA

Check engine light came on with a odb code of P0300. engine started to run rough and mileage dropped substantially. Upon arrival to my home due to safety issues I turned off car and and let it cool. My father read the odb with a code reader and said it smells like gas but we will look at in the daylight. Today upon removing the engine cover and checking the spark plugs we discover stains and residual stains on the ignition coil packs and directly under the low pressure fuel line where it connects to the high pressure fuel pump. it seems the plastic clip/connector is leaking at anout the rate of one substantial drop per 3-5 minute period. this could cause an out of control engine fire. Dealer was contacted and while there are two recalls regarding other 2014 hyndai sonatas for the same exact problem that this vin was not covered by the recall and the repair cost would be 300 for the fuel line plus labor.