2018 Nissan Titan engine problems

“Cylinder 4-5 which caused catastrophic engine failure. CP4 fuel pump. Crank shaft broken, Metal flakes in oil. Differential service. Was on the road from [XXX] to [XXX] and broke down in [XXX]. Just bought the truck from Lakeland Automall on May 8th and broke down on May 31st. Was in a bad spot to pull over and from what I have gathered we were lucky the Truck didn't catch fire. The problem has been confirmed by the Nissan dealership in [XXX] and also by an independent. As of yet it has not been inspected by the manufacturer, police or insurance representatives. My next call will be to my insurance company for inspection. I was hoping I would be able to fix it on my own by to no avail. No warning lamps or messages before. It started making clanking sounds, we pulled over and then that is when the engine light came on.”

“My crankshaft broke on the highway. I was travelling at around 70mph. No warnings were given. I lost all power and had to limp it off to the side of the road. The engine was replaced under warranty. This is an ongoing issue for 2016-2019 Nissan Titans. Folks are left with worthless vehicles because they are outside of their warranty period when it happens.”

“The contact owns a 2018 Nissan Titan. The contact stated that while driving at 40 MPH and accelerating, the vehicle shut off. The contact stated that there was an abnormal pop before the vehicle lost motive power and was pulled over to the shoulder of the roadway. The vehicle was towed to a local dealer, where it was diagnosed with a fractured crankshaft, rod bearings, and engine failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 127,000.”

“The contact owns a 2018 Nissan Titan. The contact stated that while refueling, there was an engine run-on after the vehicle was turned off. The contact determined there was a vapor lock issue and that air was entering the fuel system. The vehicle was difficult to start. There was an abnormal clicking sound coming from the vehicle. There were no warning lights illuminated. Upon research, the contact determined that the failure was like TSB: NTB19-049. The contact used a scanner and determined the failure was related to the fuel pump module. The local dealer was contacted and confirmed that parts were on back order. The contact called another local dealer, Victory Nissan Parts Center (307 Thompson Ln, Nashville, TN 37211); who confirmed that parts were backordered for approximately 6 to 8 months. The failure mileage was approximately 62,000.”

“Imminent catastrophic engine failure on 2018 Nissan Titan. The engine has developed severe cylinder wall scuffing and loss of compression (150psi vs 264psi spec) on multiple cylinders. This defect can cause loss of power and potential stalling at highway speeds, presenting a safety risk. The failure matches Nissan TSB NTB19-057 (knock/scuffing). Despite a perfect maintenance history, Nissan is denying warranty coverage by claiming there was no oil change service record because the maintenance was not done at a Nissan dealership. The local Nissan dealership confirmed the issue matches the TSB and an independent inspection confirmed the defect is mechanical (piston/cylinder clearance).”

“1. Turbo Actuator / Dealer is currently replacing the defective part. 2. When this part fails, you lose throttle control and acceleration capabilities. This part failed on me at highway speeds, and I had to drift over several lanes of high-speed traffic. I was unable to control the speed of my vehicle, with no ability to accelerate. 3. Not sure if they duplicated or are replacing the part solely by the check engine code of P00AH DTC (Check engine code). 4. It is a known issue with Nissan, and they have extended warranty coverage for 2016 and 2017 model year Titans with the diesel motor, but have refused to address it with the 2018 model, even with the same symptoms and DTC. 5.No, when the failure occurred, the check engine light came on, and the truck lost power. Occurred around September 25, 2025, mileage is 61,489. A claim was filed with Nissan North America under case # 55882533, and they have denied to cover the repair.”