2016 Hyundai Elantra: check engine light

Filed Aug 29, 2026 · Engine, Fuel system · NJ

Vehicle stalls while driving which is very dangerous. All dashboard lights go on prior to stalling. No engine light is on. Knocking sound coming from engine. Dealer states engine needs to be replaced. Car has been serviced regularly despite that Hyundai denies engine replacement. The knocking sound that engine does is common between this model and year but mysteriously there has not been engine recalls.

Filed Jul 14, 2026 · Engine · SC

The oil light & check engine started flashing. Took it to the auto shop. The mechanic stated that the oil level is very low and the engine has a bad lower-end knock. Removed the oil filter and found metal debris in the oil. No oil leaks were found under the vehicle at all. Oil is being burned out through the exhaust. The vehicle needs an the ngine replacement.

Filed Jul 8, 2026 · Transmission · UT

2016 Hyundai Elantra (75k miles) experiences severe, un-commanded Loss of Propulsive Power and a Severe Drivetrain Instability Hazard. At steady highway speeds, the automatic transmission completely loses hydraulic pressure, slips out of gear, and unexpectedly drops into a temporary "neutral." The engine suddenly revs up to high RPM on its own while losing all forward acceleration. After coasting helplessly, it violently slams back into gear, causing the vehicle to lurch forward. This also happens from a complete stop.The vehicle's OBD-II system fails to illuminate the Check Engine Light or store fault codes during these flares, providing zero warning before a loss of propulsion.This dangerous transmission slipping has occurred intermittently for several years. I repeatedly took it to an authorized Hyundai dealership to address this crash hazard. Because there was no active Check Engine Light, the dealership dismissed my concerns, refused to document it, and sent me away without a diagnosis. Recently, the service department acted in bad faith by misrepresenting my warranty terms (falsely claiming it was only 7 years) and refusing a live-data diagnostic scan. The bad faith dealership was Murdock Hyundai of Murray in [XXX], specifically the service manager Tyler as well as Krateton. The car is a verified vehicle under the Hyundai Nu 1.8L Piston Slap Class Action Settlement (TXXK Campaign). An official safety escalation case is open with Hyundai Motor America under my corporate case number XXX. I request a federal safety investigation into premature transmission pressure failure in 2016 Elantras, as this vehicle is entirely unsafe to operate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 15, 2026 · Engine · FL

So I have a suspicion oh a connecting rod, might be a bearing but it’s making a tik tik noise, no other issue than that, no engine light no nothing, been doing it for a while but car still goes great

Filed Oct 17, 2025 · Electrical, Fuel system · MA

My fuel pump comes up and my check engine light saying that it needs to be replaced when I fill up my car it automatically resets my mileage for AAA and trippy and it will tell me that I have no gas even though I just filled up or it will say I’m full when I know I’m empty so it’s not reliable. It comes and goes. And then for an electrical issue my Car will randomly stop working and then like come back up and it was underneath the positive plug. there is a clip that someone had to extend because it was too short and causing electrical surges so it’s still a problem if I go over a bump it gets loose so that clip under the positive terminal I believe is loose and makes my car shut off in the middle of driving at once and then it came right back on

Filed Jul 1, 2024 · Engine · 100,000 miles · TX

The contact owns a 2016 Hyundai Elantra. The contact stated while driving at an undisclosed speed, the RPM fell to ZERO(0) and the vehicle hesitated while accelerating. The check engine warning light was illuminated. The contact was able to drive to the destination. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.

Filed Jun 21, 2024 · Engine, Locks · CA

The contact owns a 2016 Hyundai Elantra. The contact received notification of the federal safety agency Campaign Number: 24V146000 (Latches/Locks/Linkages) however, the part to do the recall repair was not yet available. The local dealer was contacted and confirmed that the parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure related to the recall campaign; however, the check engine warning light illuminated. The vehicle was not diagnosed or repaired. The failure mileage was unknown. Parts distribution disconnect.

Filed Apr 18, 2024 · Engine · 80,000 miles · FL

The contact daughter owns a 2016 Hyundai Elantra. The contact stated that while her daughter was driving at an undisclosed speed, the vehicle stalled with the check engine warning light illuminated. The vehicle was able to restart after 5 minutes. The vehicle was towed to the dealer where is it was diagnosed with engine failure, and that the catalytic converter failed due to oil entering from the engine. The contact was informed that the engine and catalytic converter and engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 80,000. The VIN was not available.

Filed Apr 11, 2024 · Acceleration, Engine · TX

*4th report to the federal safety agency* Trouble getting response from HMA case manager. Delaying/not responding to multiple emails/calls/contact forms. Please advise. 1. What component or system failed or malfunctioned, and is it available for inspection upon request? - Multiple systems continuing to fail/malfunction. Multiple attempts to repair at Hyundai dealerships. Vehicle is currently at the dealer service center where it was originally purchased on [XXX] (Dealer number P113588 , Ron Carter Hyundai) now Big Star Hyundai. Yes - PLEASE conduct VIN inspection on this vehicle. I am waiting to hear back from dealer & HMA case manager to confirm vehicle specifications relating to VIN in their system and full engine inspection results. 2. How was your safety or the safety of others put at risk? - First reported and diagnostics completed by dealer [XXX]. Problems with engine have continued and escalated to current. Latest safety risk event occurred [XXX] while driving on high traffic freeway in Houston, TX with child passenger. Vehicle lost ability to control speed/driving power suddenly stopped/failed resulting in tow to dealership. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? - Yes. Included notes in attached reports from previous dealer visits. Symptoms, reporting & attempts to repair started within warranty window. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? - Previous inspection reports attached. 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? - CEL was on and off at the start of symptoms Dec. 2021. Dealer replaced MAP sensors and the issues continued without warning lamps. Dealer stated they could not diagnose anything without warning lamps. Dealer reported unknown diagnosis and closed case. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 20, 2023 · Engine · 44,000 miles · NY

The contact owns a 2016 Hyundai Elantra. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that the emission valve sensor needed to be replaced. The contact's son diagnosed the vehicle and retrieved the DTC code: P0017 (Crankshaft Position). The vehicle was then taken to an independent mechanic, who replaced the emission valve sensor, variable valve timing (VVT), VVT intake, camshaft position sensor, timing chain, and camshaft sprockets; however, the failure recurred. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to take the vehicle to the dealer for assistance. The failure mileage was approximately 44,000.

Filed Sep 25, 2023 · Engine, Fuel system · FL

Component or System that Failed or Malfunctioned: Engine or other I was driving my 2016 Hyundai Elantra in Kissimmee, FL, 34746 when the engine suddenly lost power and the car stalled out. The rpms dropped to 0, and the car could not be restarted. I was able to coast to the side of the road, but I was nearly hit by oncoming traffic. After several minutes on the side of the road, I was able to restart the vehicle to arrive safely home. The vehicle also shuts off at stop lights, drive-through, or idle. How was your safety or the safety of others put at risk? The loss of power while driving could have caused a serious accident. If I had been in the middle of the road or if there had been more traffic, I could have been hit by another vehicle. Has the problem been reproduced or confirmed by a dealer or independent service center? No, I have not yet taken the car to a dealer or independent service center. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No, the vehicle or component has not been inspected by anyone other than myself. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No, there were no warning lamps, messages or other symptoms of the problem prior to the failure. The check engine light seems to come and go. I am requesting that the federal safety agency investigate this safety problem. I am also requesting that Hyundai Motor America recall all 2016 Hyundai Elantras that may be affected by this problem. Thank you for your time and attention to this matter.

Filed Feb 23, 2023 · Engine · TN

No mechanical issues . Left work one morning driving to work . Made it home turned the car off .and the car never cranked back up . Sent to shop for assessment says the motor . I have routine maintenance done . No check engine light appeared . Car had been jerking on and off