2017 Hyundai Sonata: fuel pump failure

Filed Aug 19, 2025 · Engine, Fuel system · AZ

My 2017 Hyundai Sonata Limited check engine light came on at approximately 103,000 miles of use. This happened last week. The code it was pointing to was a faulty Fuel Pressure Sensor. Could also be combined with faulty fuel pump, but the primary code indicates the sensor. I will be taking it in to the Hyundai dealership shortly. The main reason I’m reporting this is because of my previous experience owning a 2011 Hyundai Santa Fe that had to have the engine replaced three times all under warranty. There ended up being a class action lawsuit because of several owners experiencing the same proglem. While this may not be the same case, I am Leary of engine problems like this. I take very good care of my cars with regular maintenance, so I’m reporting this just in case others are experiencing the same problem.

Filed Aug 25, 2024 · Engine · CA

I had the engine replaced in Feb of 2024 which was covered by the engine replacement recall. In May of 2024 I started having issues with my check engine light flashing on then off. The engine will lose power briefly during this time and the engine shakes. It feels like you are going to lose control of the vehicle when this happens. This has happened approximately 3 times at freeway speeds and a total of approximately 15 times total. I have taken it to the dealership 3 times for this issue. They made us pay for spark plugs that were fine when the engine was replaced (3800 miles was driven between the engine replacement and this issue starting). The dealership has now had the vehicle since the middle of May said they can’t recreate the problem but are saying it is a fuel pump. This was also fine when the checked it when the engine was replaced.

Filed Jan 12, 2024 · Fuel system · OR

High pressure fuel pump defective. Code p016b. Dealer replaced high pressure pump, gasket, bolt. Sonata has 43265 miles and 80 months.

Filed Dec 18, 2023 · Engine · FL

On February 27, 2023 we went to the Hyundai Dealer because our engine was leaking oil and we were told by Pep Boys that the Rear Main Seal was leaking. The Dealership scheduled us a service appointment three wks later, on March 23, 2023, when they replaced the valve cover gasket and the high pressure fuel pump gasket. On Jul 15, 2023, 2.5 months later, we return to dealership because our engine was leaking oil again and had leaked into the spark plugs tubes. They replaced the valve cover gasket again. Two weeks later on July 28, 2023, we went to the Dealership because the engine light turned on and the engine was misfiring while driving. They did nothing but added 3 quarts of oil because our oil was low despite us changing our oil 1 month prior (June 28, 2023). On September 25th, we returned to the dealership because our engine light turned on and our engine was violently shaking while making noise. At this point, we were frustrated and did not feel safe driving the car. We pleaded with the Service Manager to replace the engine from all the issues we have been experiencing including having to constantly add oil or change oil every 2.5 months. They held on to our car for 1 wk and gave us a rental. After inspecting our vehicle they replied that there was no engine issue detected so the Manufacturer will not replace the engine under the warranty. They only replaced the spark plugs and charged us with the service, parts & rental costs. It is now Monday, Dec 18, 2023, 1 wk before Christmas, and our engine light turned on once again while driving with our toddler in the vehicle. The engine not only misfired but did not allow us to accelerate beyond 30mph during high traffic hours on a road with a 50mph limit. The next service appointment available is 10 dys away, Dec 28, 2023, and they are asking us ~$400 to service the car. We feel helpless with the dealership/manufacturer, they are refusing to replace the engine. We fear that they are waiting for the warranty to expire.

Filed Feb 22, 2018 · Engine, Transmission · 9,000 miles · FL

My car has been hesitating and cuts off while driving. Whether I go 25 miles per hour or 70 my car continues to hesitate. When it hesitates I can rev the car with the accelerator to the floor but my car wont engage. I have to take my foot off the accelerator and hope my car re-engages or my engine will cut off and I have to restart it. I have had my car in the shop 5 times. 0n 11/22 orlando hyundai replaced low pressure fuel pump. On 12/18 per the tech line says high resistance injector harness and fuel rail high pressure sensor needed replacing. On 12/23 the PCM has intermittent internal open circuit. The PCM was replaced and fuel line. 1/12-1/23/18 replace control harness and crank sensor. I placed my car into lemon law. I received a letter from hyundai to bring my car in today 2/22 I was asked if I had any other problems and told them my car hesitated at odometer reading 10022 miles they check my car and was told my car has no issues found. John mc my service advisor drove my car with me in it he says he knows there is a problem and it hesitated on him and say but we don't know how to fix it. He said today we didn't recreate the issue so we believe your car is fixed. This car is a safety issue. This is the same problem I had with a 2015 sonata. I traded that in for a elantra that was way to small for me and I traded for this 2017 sonata. This car is a major safety issue. Not sure what to do. Hyundai needs to find out what wrong with this car so when this problem arises to another hyundai a solution can be found. Just give me a new sonata and I would be happy, I bought my car with 6 miles on it do the right thing hyundai. It's awful scary at 70 MPH to have this hesitation begin. What does it take for hyundai to do something (have an accident?)

Filed Sep 21, 2017 · Electrical, Engine · 3,400 miles · NV · crash

On saturday 9/16/17 I was at a stop light sitting still when my car stalled and went dead. I looked at the dashboard and saw the engine light was on. The brake was frozen and before I could restart the car it rolled into the vehicle in front of me. There no damage to her jeep. However my car hit the spare tire and rack on the back of her trunk, causing damage to the hood of my car, the grill and lower bumper. We did not exchange information, as she did not have damage to her car, so she left the scene. I drove the car home (2 miles from my house) and called the dealership. They told me to bring the car in. I brought it in the same day. Raymond, the service agent came outside to survey the damage and I told him what happened. He went to talk to the service manager and later came out and said they will take the car and put it on the machine to get a diagnostic reading to see why the car stalled. They gave me a loaner car and I left. On monday, 9/19/17, I returned to the dealership after I got off work and was told by raymond that they could not find anything wrong thus far. He said he wanted to keep the car another day or two to take it for a drive and try to see if it would stall again. I agreed and asked raymond to also check the fuel injectors, fuel pump, fuel regulator, as my friend who is a car mechanic suggested to me that this can cause a car to stall also. He said okay. On today, wednesday 9/21/17, raymond called me and said they took the car out for a drive and it did not stall, nor could they get a reading that anything was wrong when they put it on the machine. He said he could not understand why the car would stall. I asked for a diagnostic report and he said he could only give me a copy of the service ticket. I am afraid that this car could stall again and what if it happens while driving -- it could be much worst damage and bodily harm. Please help!

Filed Mar 10, 2017 · Fuel system · 300 miles · FL

Tl* the contact owns a 2017 hyundai sonata. While driving approximately 45 MPH, the vehicle shut down without warning. The vehicle was taken to a dealer where it was diagnosed that the vehicle was operating as designed. The failure recurred with a loud noise and the vehicle was taken back to the dealer. The contact was given a loaner vehicle. The dealer diagnosed and replaced the fuel pump. The manufacturer was made aware of the failure and promised to have an agent call the contact. The failure mileage was approximately 300. Updated 08/22/2017