2018 NISSAN TITAN Complaints

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.

I tow full-time as a working nomad. My truck has gone into limp-mode (low-power mode) onto a complete loss of power. I have been stranded on 3 difference occasions. The issue first began at 75,000 miles which I have records of. After this most recent incident, I realized there was a pattern emerging. After further research, I have discovered that there is a lawsuit out for these CP4 fuel systems. I called Nissan and opened a case number. They processed and then stated that they will not assist me since I am not over 100k miles. My odometer is currently at 105K miles. I am not sure if it is safe to drive my truck and I need to relocate soon. What options do I have? Can anything be done about this? From what I am reading online, this is a $10,000 - $15,000 to fix, let alone the thousands of dollars I have already spent on varying part replacements. Nissan/Cummins designed this truck to work with the fuel being sold in Europe. The fuel in the US does not offer the lubrication required to function properly and it’s causing friction on metal which is sending metal shavings in through the fuel system. The fuel filters cannot handle the debris. The only warning signs I received from the vehicle was a dash warning stating low power / no power mode had been engaged as I lost power and had to roll to a stop on the side of the road. Thankfully I was able to get over to safety each time. Then, I stayed stranded on the side of the road (single female traveling alone with dogs) until I was able to figure things out. Nissan refused to tow or offer any support. Existing Lawsuit: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Erratic shifting. As an example, while attempting to pass at highway speeds, the transmission will not downshift responsively (or downshift to low gears/high rpm) leading driver to abandon the pass due to time lag, lack of confidence and power gain loss/stress. Other examples, this 7speed transmission will rev spike at low gears like it was slipping or confused, then it corrects itself. If you have cruise control enabled, the transmission seems to downshift on minor hill climbs, which is not something a normal driver would do. Overall, this transmission and TCM have had issues and recalls in the year prior to this model and in my opinion the flaws continue to exist and need a recall.

I am experiencing engine stalling. I have also experienced dome light flickers or not turning on on occasion along with radio and phone charge connection not always working, like a short of some sort. Also the mirror button allowing the driver and passenger side mirrors to open close sometimes fails as if wiring is OK sometimes and other times not There is not an exact date for the issues as they have occurred on and off since 2019 I did take the truck into Nissan 11/2023 as the radio blacked out and would not turn on. I was told the Main Harness had a shorted out wire and a jumper wire should be installed. Nissan installed a jumper wire for the radio. Occasional flickering lights, charging connections, mirror operations, and engine stalling still remained.

Truck died driving at highway speed, towed vehicle to Nissan dealership, and was quoted at or above 30 thousand dollars in repairs related the dreaded CP4 fuel pump system that has failed on the truck that only had 134,000 miles.

Engine failure. On rural highway with recreational traffic, engine started rattling, within 5 seconds the engine shut off, luckily I was able to get on the shoulder. My truck is currently at a repair facility 300 miles from my home. Waiting on information from shop and extended warranty company. No warning lights whatsoever.

My 2018 Nissan Titan has suffered two engine failures within two years, with fewer than 37,000 miles on the vehicle. Despite following all scheduled preventive maintenance, the engines failed catastrophically. One of these failures occurred with my family in the vehicle, placing their safety at serious risk. Details: The first engine failure happened at approximately [30,000], and the second at around [37,000], both requiring full engine replacements. These were not minor issues — they were sudden, complete losses of engine power. The second failure was especially dangerous, occurring while driving with my family onboard. Despite clear signs of a major defect or systemic issue, Nissan has refused to take responsibility, treating these catastrophic events as if they are routine, isolated failures. I followed all required maintenance schedules, and the vehicle was well cared for. Nissan’s lack of accountability is unacceptable and deeply disappointing. Based on this experience and their failure to stand behind their product, I will not purchase another Nissan vehicle and cannot recommend the brand to others. I am submitting this report to urge the NHTSA to investigate this issue as a potential safety and manufacturing defect that could affect more owners and put more families at risk.

I CANNOT MAKE CALLS ON MY HANDS FREE BECUSE THERE IS A PROBLEM WITH THE TCU. NISSAN IS AWARE OF THIS IMPORTANT SAFETY ISSUE AND THEY WANT THOUSANDS TO FIX IT. I CANNOT USE MY HANDS FREE IN MY TRUCK, I CAN HEAR THE VOICE OF OTHERS BUT THEY CANNOT HEAR ME. ITS A HUGE DISTRACTION WHEN MAKING AND RECEIVING CALLS. THIS TCU IS CAUSING THE MIC NOT TO WORK. NISSAN HAS A TECHNICAL BULLETIN ON THIS. IT IS UNDER CLASSIFICATION: EL18-006 AND REFERENCE: NTB18-023=NISSAN; MICROPHONE DOES NOT WORK

Component Turbocharger, power train Safety vehicle would not restart so was stranded on highway Unknown if others have had similar issues Components have not been examined at this time but are available Warnings, 1st check engine, 2nd power reduced, 3rd engine was dead Going uphill on the interstate, the check engine light came on. I then observed the turbo boost climbing to 30 PSI, dark smoke coming out of the exhaust, and white smoke. I was attempting to pull over while this happened. When I got to the shoulder of the road , the vehicle was disabled, and coolant was pouring out of the overflow onto the ground. The vehicle needed to be towed to Great Falls, where it is awaiting repair. Vehicle is still not running at this time

While driving my car would almost stall on the highway, if I gave it gas while merging onto the highway it doesn't respond and then almost stall, but then respond after 2 seconds when it was not as clear to merge on the highway. I have had to replace the battery twice and been stranded in the last 3 years, the engine would pretend to start but not kick over. I have seen that this is a common problem when looking into Nissan TItan Forums