2017 Nissan Pathfinder engine problems

“SLUDGE IN ENGINE- UNDER 100,000 MILES We had been keeping up with all recommended services, and it is cosmetically perfect, but the car is now a total loss. A Check Engine light came on, and we began to notice a tremor/shake and took it to Southern Team Nissan. The Nissan dealer diagnosed sludge in the engine and said it would need a total engine replacement. The Nissan dealer advised that the cost of that would be more than the car was worth. After they pulled the pan to check if there was definitely sludge, the car then shook so badly that it felt unsafe to drive. Research shows that this is a known issue, with many cases of documented VQ35DD sludge problems. We see many listed cases on this website under complaints for 2017 Nissan Pathfinders.”

“The contact owns a 2017 Nissan Pathfinder. The contact stated that while driving in a parking lot at unknown speeds, the vehicle began jerking and stalled. The battery had become inoperable. The TPMS message was displayed. The failure was linked to Technical Service Bulletin: NTB15-015h. The local dealer was called and informed the contact that the failure was related to the CVT transmission and confirmed there was no coverage for the repair of the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 100,000.”

“Engine failure in my vehicle equipped with the VQ35DD engine, which I believe is the result of a widespread and well-documented design defect involving internal sludge buildup. I have owned this vehicle for over five years and have followed the recommended routine maintenance schedule, including on-time oil changes using high-quality oil. At no point during any inspection, service, or maintenance appointment was I informed of any sludge buildup or concerns with the engine. Only after a serious mechanical failure did the Nissan servicing dealership claim the engine was full of sludge, subsequently recommending an engine replacement. Despite my diligence in maintaining the vehicle, I am now facing an engine replacement that was entirely unexpected and has created a safety risk due to loss of motive power. This could have resulted in a serious accident, and I believe this issue merits urgent and transparent attention. Upon researching this issue, I found dozens of similar complaints from other owners with VQ35DD engines, many of whom reported premature engine failure, sludge accumulation, and PCV system defects—despite maintaining their vehicles properly. This…”

“As I was driving my 2017 Nissan Pathfinder, when the vehicle suddenly accelerated to a high rate of speed and the gas pedal became stuck. I tried to press on the brake as much as possible but the vehicle was not successfully able to be stopped which caused a terrible motor vehicle accident.”

“PCV Valve hose clogging rendering system useless and resulting in sludge buildup in engine. The sludge buildup causes issues with timing chain lubrication and ultimately destroys the guides causing excessive engine rattling, aluminum flakes in the engine. Causes loss of power, numerous different engine codes, and ultimately catastrophic failure of engine. Hise collapses within itself and prevents proper crankcase ventilation. See attached pictures.”

“The Check Engine light turned on and took it to dealership on 12/14/24 and they stated that Throttle chamber may have issues. Used scanner and code P0101- Mass Air Flow Sensor Circuit was read on scanner. Vehicle struggles to get air flow into engine causes speed to struggle when trying to accelerate.”