2016 Hyundai Santa Fe: check engine light

Filed Sep 4, 2026 · Engine, Transmission · TX

1. Component/System Failure & Availability: The failed component is the engine's internal Camshaft Variable Valve Timing (CVVT) phaser backing bolt within the 3.3L V6 engine assembly. An internal factory bolt unthreaded, backed out, and physically pierced directly through the upper valve cover. The vehicle and intact failed engine are currently located at an authorized Hyundai dealership service center in [XXX], and remain fully available for immediate physical inspection by federal investigators upon request. 2. Safety Risk: An internal engine bolt unthreading and puncturing through the valve cover creates an extreme safety hazard. A high-velocity metal bolt piercing the engine casing causes immediate engine seizure, sudden loss of motive power at highway speeds, loss of power steering/braking assistance, and massive pressurized oil discharge directly onto red-hot exhaust manifolds, posing a severe risk of sudden catastrophic vehicle fire and multi-vehicle highway collisions. 3. Dealer/Independent Confirmation: Yes. The failure was formally inspected, reproduced, and confirmed by an authorized Hyundai dealership service department. Dealership technicians logged official diagnostic findings under Prior Authorization Case #XXX. 4. Inspection by Manufacturer/Others: Yes. The defect was inspected and escalated directly to Hyundai Motor America (HMA) Corporate Engineering. Corporate engineering officially verified the defect and issued Techline Case #XXX, confirming that an internal factory CVVT backing bolt unthreaded and pierced the valve cover, recommending a full engine replacement. 5. Warning Lights & Prior Symptoms: There were no prior warning lamps, check engine lights, unusual sounds, or advance warning symptoms prior to the failure. The internal hardware failure occurred suddenly and without warning while operating the vehicle at standard operating parameters. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 25, 2026 · Engine · NC

Purchased a used Santa Fe in January 2026 with 129k mile and at 131k my vehicle's CEL came on and did not function properly while operating. While driving the vehicle failed to accelerate above 25 mph when I pushed the gas. I pulled over to get out of the way of traffic and avoid any accidents. I shut the car off and sat for several minutes before restarting my vehicle. It successfully restarted and I drove home and parked it. I ran CEL diagnostic and received the code P0021. I had the vehicle towed to the local Hyundai dealer and they also pulled the same code and indicated I have an oil consumption issue explained as follows "Timing over advanced. Timing components driven by oil pressure. Inspected cylinders and borescope and found cylinder wall scoring and faulty piston rings. Radiator has crack causing coolant leak. Engine will have to be replaced to remedy oil consumption. Radiator will need to be replaced to remedy leak." resulting in over $12k of repair work. The vehicle's temperature gauge did not indicate any abnormalities nor did the oil light come on to indicate any oil consumption issues. The vehicle was driven from the dealer to my home within city limits/speed and has not replicated the acceleration issue but the CEL remains on as the repair is too costly and is more than what was paid for the vehicle.

Filed Feb 27, 2025 · Engine · 145,322 miles · TX

The contact owns a 2016 Hyundai Santa Fe. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power with the check engine warning light illuminated. The vehicle was towed to an independent mechanic, where it was diagnosed that the engine had failed and needed to be replaced. The vehicle was not repaired. The vehicle was towed to the dealer, where the same diagnostic information was provided. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 145,322. The VIN was not available.

Filed Dec 10, 2024 · Engine · 200,000 miles · PA

The contact's husband owns a 2016 Hyundai Santa Fe. The contact stated that while driving at various speeds, the vehicle failed to accelerate upon depression of the accelerator pedal. The check engine warning light appeared on the instrument panel during the failure. Despite the vehicle operating in LIMP Mode, the vehicle was taken to an independent mechanic where an oil change was performed. The mechanic warned after the service was performed that there may be an ongoing failure with the engine. Several days later, the contact stated that while in stop and go traffic, the vehicle stalled with the check engine warning light illuminated. Due to the failure, the vehicle was towed to an independent mechanic where a diagnostic test was performed; and the contact was informed that the failure might be related to the cam shaft. The contact had the vehicle towed to a dealer and informed that the failure was probably related to the high-pressure fuel pump. The high-pressure fuel pump was replaced; however, the failure persisted. The contact was then informed by the dealer that the engine needed to be replaced. The manufacturer was not notified of the failure. The vehicle remained with the dealer unrepaired. The failure mileage was approximately 200,000.

Filed Oct 27, 2024 · Transmission · NJ

Hard Shift occurs between gear 1 and gear 2. The hard shift lurches the entire car. It occurs on both upshift and downshift. The hard shift occurs on cold starts. The problem goes away when you turn the vehicle off and then back on. There are no check engine lights. The dealer can't replicate the problem.

Filed Oct 18, 2024 · Engine · WA

What component or system failed or malfunctioned, and is it available for inspection upon request? Engine failure due to oil consumption How was your safety or the safety of others put at risk? Car attempted to die on a highway, this could have been dangerous had I been in the outside 'fast' lane when it struggled. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, the dealer has confirmed the engine needs a full replacement Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No, only the dealers service center has inspected the vehicle Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Yes. There was a blink engine light shortly before the car engine died. However, there was no indication the oil was low in the engine. The oil light did not come on.

Filed Oct 16, 2024 · Engine · NC

Engine has serious recall that I was not made aware of during purchase. My car has been burning oil and the engine has been on. I've taken out to several local mechanics who said "these model Hyundai's burn oil once they are over 100,000 miles" and that I would just need more frequent oil changes. I was also told the engine light was either an old code being thrown, or the pump valve, but nothing to worry about because it really only effects gas milage. My engine went out and I had to get it towed to another mechanic, who upon seeing the car, knew it had an engine recall and could hear a distinctive knock in the engine due to a failing rod bearing. Upon Hyundai's request, we towed it to a dealership to have them inspect it. They agree it's the engine that's bad, but since a "knock sensor" was never installed by the previous owner, they say they are not liable to cover the repair, and that since the recall is "public knowledge", it was my responsibility to find out. If you go onto the website, and type in my VIN number, the information says "0 unrepaired recalls", therefore making it impossible for me to have known about the recall without Hyundai letting me know, which they didn't.

Filed Aug 16, 2024 · Engine, Transmission · MD

Was driving on a 5 hour car ride at 5pm on August 16th and was going up a hill, the vehicle quickly lost all power and the engine light lit. I was able to pull the car to the side of the road with the momentum that the car already had, but was not able to get the car to a safe space (its about 6 inches from an exit ramp lane), as the car would not drive. Once I got the car to the side of the road, I checked the engine and did not see any excessive heating or anything out of the ordinary. I tried to restart the car and the check engine light is lit and the battery system for the car turns on but the car will not start or try to turn over the engine. The car is currently sitting on the side of the road. My wife and my dog were in the car and we had to quickly move to a safer place away from the 70 MPH traffic. Calling a tow truck tomorrow to take it to a dealership. It was a little scary that the engine power cut out like that without giving an engine light notice in advance or giving time for me to navigate to a more safe space to park it.

Filed Jun 8, 2024 · Engine · TX

Car started making noise after the check engine light came on. Check engine light was on for just a few days then by the third/fourth day the car starting making noise, turned off on me a few times then just died. We replaced a few sensors and the battery and starter. Two mechanics have told me the engine is locked and needs to be replaced.

Filed May 17, 2024 · Engine · CT

On 5/15, I was entering the highway when the vehicle refused to accelerate. I pushed the gas pedal all the way to the floor, and the vehicle did not respond. I checked to see if it had stalled, but the engine was still running. I watched the rpm meter as I pushed the accelerator, and noticed that the rpm’s stayed at 1.5 the entire time. I pulled over to the shoulder and turned off the vehicle as I was afraid of causing an accident as I was not at highway speed at the time. I turned the vehicle back on and when it was safe, attempted to reenter the highway. The vehicle responded appropriately. The check engine light had come on 2 days prior to this (5/13) and I was in the process of trying to make an appointment to get it fixed. My husband ran the engine code (P0014 and P0024). The check engine light had turned off upon restarting the vehicle but turned back on about 3 minutes after resuming driving. I took the vehicle to a mechanic to have it looked at, and they noticed that the engine had lost 4 quarts of oil. There had been no oil leakage noted at any time. They added 3 quarts of oil to the engine and noticed that the knocking sounds remained. Their determination was that the car was pretty much totaled. There were no indicator lights on the dashboard to notify me that there was low oil at any time. The only indicator that showed was the check engine light 2 days before.

Filed Apr 7, 2024 · Engine · PA

Engine light came on while driving and vehicle began to malfunction with bogging and little power to move the vehicle properly. Vehicle was towed to Hyundai dealership for diagnostics. Determining that there is rod bearing failure in the motor. Contacted Hyundai corporate who denied warranty claim citing I did not properly maintain the vehicle per owners manual although they were provided with records of proper maintenance, however it was disregarded by Hyundai warranty people as proper maintenance. I have contacted BBB and PA Attorney General for assistance but to no avail. There are countless others with the same exact issues where Hyundai Motor America is denying warranty claims for identical mechanical motor issues.

Filed Mar 19, 2024 · Engine · MO

Engine knocking/failure at 75000 miles. No warning/check engine lights prior to failure. Dealership quoting $17k to rebuild engine.