2018 Nissan Titan: sudden loss of power

Filed Jun 17, 2026 · Engine, Transmission · OK

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.

Filed Dec 16, 2025 · Engine · ID

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).

Filed Oct 6, 2025 · Engine · MD

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.

Filed Oct 2, 2025 · Driver assistance, Fuel system · MO

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)

Filed Jul 31, 2024 · Acceleration, Electrical · FL

The vehicle has loss of power and goes into limp mode unexpectedly. It has done this numerous times on the interstate and regular roads. It is a safety hazard. This has occurred on several dates and we were lucky to be able to pull over safely. We we traveling in Georgia last month and Nissan didn't even have a qualified diesel tech with 3 hours of where we were. We have had ten of thousands of dollars of work to the truck and it still is not fixed. They replaced the computer screen, wiring harness, and I believe parts of the exhaust system. They had the truck for months.

Filed Jul 25, 2024 · Engine · SC

I was driving down the interstate and my crankshaft broke. It happened suddenly and I lost all power and luckily no one ran into the back of me as I slowed down and made my way to the shoulder. There I sat for 2 hrs waiting for the tow truck. There were no signs or warning lights prior to the engine loosing all power. Nissan inspected and has confirmed it is a broken camshaft and will not warranty it.

Filed Jul 4, 2024 · Engine · FL

While traveling at highway speed, engine suddenly started making noise, shaking, and lost power without warning or check engine light. Vehicle was towed to dealer, suspected crankshaft failure, quoted $31,000 by dealer to replace engine.

Filed Apr 19, 2024 · Engine · OH

Crankshaft failure resulting in complete engine failure. I still have both halves of the crankshaft laying on my bench. During the engine failure experience the truck lost all engine power and came to a stop alongside of interstate barrier wall. I couldn't even open my door without obstructing a lane of interstate traffic. No warning lights led up to the event or any symptoms leading to the catastrophic engine failure.

Filed Jan 11, 2024 · Electrical, Engine · TX

Traveling home from working nightshift. I fueled up my truck with diesel and started my commute home which is 85 miles to my residence from work. 60 miles into my commute without warning and no alerts my truck suddenly lost power to everything… engine, steering, acceleration, and electrical. Final able to pull off the road with difficulty steering. Came to a stop and everything shuts off. All the warning lights lit up but no exact detail to what caused it. Had it towed to service shop after failure to start and the sound it made trying to start wasn’t normal. Technicians ran my codes and found nothing that could diagnose the problem.

Filed Nov 19, 2023 · Engine, Fuel system · TX

My vehicle was driving down the highway at 70 mph when without any warning the engine shut off resulting in the loss of power steering. I had to navigate through traffic to get to the shoulder of the road. I had the vehicle towed to Nissan dealership after a couple weeks I was made aware that the engine needed to be replaced. The truck suffered. A broken crankshaft and main fuel components were replaced as well.