2020 Nissan Pathfinder engine problems

Filed Sep 18, 2026 · Engine · HI

Just bought this used car this summer and worked for about 2 months then had to repair a Failing Radiator/Condenser Cooling Fan Assembly. Seems like the same class action issue from the previous versions. Hoping this can be another recall. It seems like the same defective part that was used.

Filed Jul 26, 2026 · Electrical, Engine · FL

The car stalled three times and died in active traffic. The breakdown was so hazardous that the police department had to intervene and push the car out of the road and had to tow the car more than 3 times and was at the Nissan Dealership for over one week. I paid Nissan dealership $5,000 to repair this specific, life-threatening defect, but the car returned to me unfixed.The vehicle is unsafe and has been sitting parked at my house for 3 months because I cannot safely drive it. It keeps stalling, dying in traffic and making a loud grind noise. I need help.

Filed Jul 17, 2026 · Engine · WA

After only 110,000 miles, my local Nissan service center (Advantage Nissan, 5101 Auto Center Blvd, Bremerton, WA 98312) states that the timing chain is loose. The repair estimate is in excess of $6000. The expense is because it requires removal of the engine to effect repairs. Research reveals that timing chain issues at 100000+ miles are common for this vehicle. It is the expectation that the timing chain system last the lifespan of the vehicle. The result is that owners pay more than half of the original price simply for maintenance because of Nissan's choice to use substandard parts in a critical system, a fact they learned with earlier models where timing chain issues and recalls occured. I'm retired and can't afford to maintain this vehicle by spending $6000 every 100000 miles.

Filed May 28, 2026 · Engine · LA

The vehicle has developed a persistent and progressively worsening rattling noise from the engine during cold starts, along with intermittent rough operation. The symptoms are consistent with a malfunction or defect in the engine timing chain system, including possible timing chain stretch, timing chain tensioner failure, or related internal engine components. This condition presents a serious safety concern because the timing chain controls engine valve timing. A failure or severe degradation of this system could result in sudden engine stalling or complete engine failure while driving, increasing the risk of a crash without warning, particularly in traffic or at highway speeds. The issue began as an intermittent startup rattle and has steadily progressed in frequency and severity. No consistent warning lights were present in the early stages, which may delay driver awareness of an impending failure condition. The vehicle has been inspected by a dealership service department, and the concern was acknowledged, but no repair or corrective action has been performed. The condition remains unresolved and continues to progress. Based on owner reports and service feedback for similar vehicles equipped with this engine, this issue appears to reflect a potential widespread defect pattern affecting the timing chain and/or tensioner system in this engine family, rather than an isolated incident. Multiple reports describe similar symptoms occurring around similar mileage ranges, suggesting a possible systemic reliability defect. The vehicle is currently still operable but is operating with a known and worsening engine defect that could result in catastrophic engine failure without warning.

Filed Mar 29, 2026 · Acceleration, Engine · IL

While driving, the vehicle experienced sudden and complete loss of throttle response, resulting in little to no acceleration. This occurred in active traffic and created a dangerous situation where the vehicle could not maintain speed or safely move out of traffic. The vehicle has been serviced multiple times by Nissan of Kenosha, including a full transmission replacement under warranty. Despite these repairs, the same throttle failure has occurred repeatedly, including within hours of being returned as “repaired.” Most recently, the throttle failed again while driving on a public street, and I was only able to move the vehicle into a driveway with minimal acceleration. The vehicle is currently not drivable and remains unsafe to operate. The dealership has not resolved the issue and has released the vehicle multiple times in an unsafe condition. This is an ongoing safety defect involving loss of acceleration and vehicle control.

Filed Mar 8, 2026 · Engine · IN

I own a 2020 Nissan Pathfinder with approximately 55,000 miles. The vehicle repeatedly failed Indiana emissions testing because the oxygen sensor monitor would not set to “ready,” despite multiple complete drive cycles and no check‑engine light or stored fault codes. A local shop performed diagnostics and found no issues. They reported that another 2020 Pathfinder came in the following week with the exact same problem. My vehicle was ultimately sent to a Nissan dealership, where they determined the upstream oxygen sensor had failed in a way that prevented the ECM from running the emissions monitor, yet did not trigger any diagnostic trouble codes. The repair required full sensor replacement at a cost of $1,450, not covered under warranty. The failure mode is concerning because: • The vehicle gives no warning to the driver. • The ECM blocks emissions readiness indefinitely. • The issue appears to be occurring in multiple 2020 Pathfinders. • Owners cannot legally renew registration without passing emissions. This may indicate a defective oxygen sensor or ECM logic issue affecting 2020 Pathfinders. I am filing this complaint so the federal safety agency can track the pattern and determine whether a broader defect investigation is warranted. Vehicle Details: • Year/Make/Model: 2020 Nissan Pathfinder • Mileage at failure: ~55,000 • No warning lights, no stored codes • Emissions monitor would not complete • Dealer confirmed sensor failure and replaced part Safety Concern: A failed emissions component that does not trigger a fault code may indicate a defect in the emissions control system or ECM logic. The lack of diagnostic warnings prevents owners from knowing there is a problem until the vehicle fails emissions testing.

Filed Feb 1, 2026 · Engine, Suspension · IL

On April 7, 2025, the dealership attempted to sell me a vehicle that was experiencing an engine condition running too lean. I declined that vehicle due to safety concerns. On April 8, 2025, the salesperson contacted me again and stated that a different vehicle had been located that would meet my needs. At that time, I was nine months pregnant and urgently needed a vehicle with third-row seating for my children. The dealership was aware of my condition and urgency. I took delivery of the vehicle that day. Unexpectedly, I went into labor the following day and gave birth shortly after. Because of childbirth and medical recovery, I did not immediately operate the vehicle extensively or discover the safety issues. After being discharged from the hospital, around April 11, 2025, I began using the vehicle and discovered serious mechanical problems that made the vehicle unsafe to operate. The vehicle exhibited engine-related issues and a major suspension defect that affected vehicle stability and safe operation. The vehicle was returned to the dealership, where repairs were performed and parts were ordered, confirming that the defects existed prior to or at the time of delivery. Despite the vehicle being driven a significant distance immediately before sale, the dealership did not perform a basic oil change or standard post-delivery inspection. Operating a vehicle under these conditions raises concerns for engine reliability, overheating, and failure. The suspension defect created risk of loss of control, and the engine condition created risk of drivability issues. These conditions posed a safety risk to the driver and passengers, including a newborn child. The vehicle remains available for inspection if requested.

Filed Dec 3, 2025 · Engine · NE

My 202 pathfinder started misfiring with sever knocking, Nissan said there is metal saving in my oil which is caused because of the long block engine failure and timing chain loosening. I had my oil changes done every 4K, and I also had the fluids flushed twice in 5 years because of excessive build up. How does this happen.

Filed Sep 12, 2025 · Electrical, Engine · FL

Electrical issues with my car including AC. Timing belt chain went and gasket covers. Continuous issue with this vehicle.

Filed Dec 16, 2023 · Engine, Fuel system · FL

There's been a loss of power when accelerating, engine has made an odd noise during startup and occasionally a knocking noise when driven longer than a 10 mins. Dealership said there's metal in the oil pan. I saw an article today that said only nissan three and four cylinder vehicles have these issues but my pathfinder has the same problems.