Notes: The 2005-2007 Pathfinder appears to have a widespread defect where coolant leaks into the transmission, causing transmission failure around 90,000 miles. Repair costs are typically upwards of $3,500.

According to the New York Times & a class action lawsuit, the defect actually extends through 2010 model year. More info here.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
95,564 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Nissan Pathfinder engine problems

engine problem

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2006 Nissan Pathfinder Owner Comments (Page 2 of 7)

« Read the previous 20 complaints

problem #116

Oct 012013

Pathfinder 6-cyl

  • 104,252 miles


The radiator cracked and the transmission oil mixed with the cooling. This resulted in the damaging of the transmission and we had to replace the radiator.

- Albemarle, NC, USA

problem #115

Jun 232014

Pathfinder 6-cyl

  • 86,000 miles
My radiator is evidently cracked, leaking coolant into my transmission, causing failure to shift. My vehicle began losing power. At one point, I attempted to accelerate through an intersection from a stand-still as the traffic light turned green. I was nearly rear-ended by the vehicle behind me as my vehicle was not moving, like being stuck in neutral.

- Omaha, NE, USA

problem #114

Jun 192014


  • 146,000 miles
Fluid from radiator leaked into transmission, completely burned out.

- Arlington, TX, USA

problem #113

Jun 202014

Pathfinder 6-cyl

  • 87,000 miles


Have a 2006 Nissan Pathfinder le and noticed the transmission was starting to make a rumble strip noise around 45 mph. Did some research and discovered that Nissan had a defective radiator which caused anti-freeze to leak into the transmission through coolant line. Knowing that the radiators were defective why wasn't Nissan ordered to recall them. It is a safety hazard if you are traveling on the highway and your transmission fails!!! I now have to pay $2500 to pay for a known defect to have radiator and transmission replace.

- Hummelstown, PA, USA

problem #112

Aug 292013


  • 89,000 miles
Vehicle started making a whining noise coming from the engine area that increases with rpms and was taken to dealer and said to be faulty timing chain tensioner. Was manufactured with plastic parts for this model had price quoted to approx $3000 to repair!

- Chillicothe, OH, USA

problem #111

May 272014

Pathfinder 6-cyl

  • 125,000 miles
Same issue as all others, drive a 2006 Nissan Pathfinder and was happy until 125tsd miles never a big repair. Now I have the same issue faulty radiator kills silent the transmission. Did visit the dealer for every service even as the problem starts little by little. First a unpleasant shifting, dealer recommends a transmission flush before the official service interval, done. After we are still not happy as we can tell the transmission shifts different as we did know it from before. See the Nissan dealer again, they write the order with the customer complaint, "customer complains about transmission problems". written statement of the dealer, transmission checked no issues found. Some miles later, total fall out of the transmission special the tcu. Good customer will not see now dealer again but a lawyer.

- Simpsonville, SC, USA

problem #110

Apr 032014

Pathfinder 6-cyl

  • 103,000 miles


Engine coolant hose ruptured into the transmission fluid. First noticed it when the engine was running hot. Found out this is a factory defect.

- Cut Off, LA, USA

problem #109

Jun 062014

Pathfinder 6-cyl

  • 80,743 miles
Had issue with transmission.brought to mechanic and found out that radiator was cracked and ruined transmission. Was told by mechanic that this was common with this vehicle.went in internet and found all kinds of info about same problem. I feel if I was notified from Nissan earlier I would not have to pay for extended warranty 2500.00.would have been free for under 80,000 car has 80,743 miles.not happy with Nissan, will not ever buy another.

- Ocean View, NJ, USA

problem #108

Jul 192013

Pathfinder 6-cyl

  • 150,000 miles
Coolant leaking into transmission causing failure and slippage. When coming to abrupt stops transmission "jerks" and "bucks" also, upon accelerating, transmission slips and is unable to accelerate properly. Safety issue with proper driving capability.

- Greentown, PA, USA

problem #107

Apr 012014

Pathfinder 6-cyl

  • 80,900 miles
Radiator developed a crack which leaked into transmission - both had to be replaced. We were told, due to a class action settlement in 2013, we were responsible for a deductible of $2,500 since our vehicle started problem after 80,000 and past March 1, 2014. Did not realize this problem until we took vehicle in, by that time mid April 2014 and at 81,990. This should be a recall.

- West Columbia, SC, USA

problem #106

Mar 242014

Pathfinder 6-cyl

  • 70,000 miles


Corrosion in radiator parts allowed coolant to contaminate transmission fluid resulting in failure of transmission.

- Edmonds, WA, USA

problem #105

May 062014

Pathfinder 6-cyl

  • 102,000 miles
Service engine light is staying on. Took to dealer and ses code read catalytic converter needs to be replace. Did some research online and looks like this is a common problem 02 sensor does not report airflow. $1200 dealer repair. Not sure why there hasn't been a recall.

- Laguna Niguel, CA, USA

problem #104

May 012014

Pathfinder 6-cyl

  • 107,864 miles
Tried to sell the car and the buyer pointed out that the radiator must of cracked and mixed with the transmission fluid. He did not buy the car and now I am being told that I have to replace the transmission and the radiator. Apparently this is a huge problem on these cars and they need to fix this. Very upset and will never buy a Nissan again.

- Warren, MI, USA

problem #103

Apr 212014


  • 11,100 miles
Car started rumbling very erratically at high speed. Had I not had good grip on wheel it would of been bad for my family or others. Glad it didn't fail completely leaving me powerless on highway. I believe this will result in deaths or serious accidents. Not to mention thousands in repairs. Had radiator replaced last year due till same problem. Something needs to be done. This always happens right outside if the extended warranty.

- Chester, VA, USA

problem #102

Apr 182014

Pathfinder 6-cyl

  • 100,102 miles
I was driving yesterday night when my car started jerking and stopped suddenly on the highway, thankfully the cars behind me were able to stop avoiding a crash because there was lots of traffic, but otherwise, this would have been a fatal crash. The car would not move for several minutes, people had to help push it off the highway. Then after a while it started moving again. I was able to drive the car, jerking all the way back to my house. I had previously noticed a jerking whenever I am accelerating or decelerating, I took it to the dealership and they informed me that it was an issue with the transmission of Pathfinders owing to a defect in manufacture that causes radiator fluid to mix with coolant affecting the transmission. They flushed the transmission but the jerking continued. I was searching the internet on this and saw many complaint on this. This issue need to be resolved. I am glad I was spared but life's are being put in danger.

- Chicago, IL, USA

problem #101

Jan 082013

Pathfinder 6-cyl

  • 92,000 miles
My radiator failed and possibly leaked radiator fluid into my transmission, via an internal radiator cooler. This is a widely known problem with this model and year. Involving a class action lawsuit. My mechanic caught this problem early enough that my transmission wasn't completely destroyed. The resulting repair was $900 plus $200 for a transmission flush as a safeguard to possible radiator fluid that may have gotten into the transmission. I was outside of the mileage extension for warranty and since my transmission wasn't destroyed I didn't qualify for any help from the class action lawsuit. The repairs on this vehicle are staggering I currently have a fuel sending unit issue that is the subject of a recall but my vehicle is outside of the warranty extension. This is a poorly made vehicle that has cost me thousands in repairs. Nissan needs to be held accountable. Nissan will not take responsibility and keeps telling me to go to a dealer to get my vehicle repaired. So frustrating.

- North Berwick Me, ME, USA

problem #100

Mar 142014

Pathfinder 6-cyl

  • 76,535 miles
Fluid from radiator leaked into transmission which destroyed both.

- Billings, MT, USA

problem #99

Feb 012014

Pathfinder 6-cyl

  • Automatic transmission
  • miles
Auto transmission/radiator.

- Houston, TX, USA

problem #98

Mar 032014

Pathfinder 6-cyl

  • 175,000 miles
Sudden jerking in vehicle when traveling at highway speeds. The problem has been diagnosed as a failed transmission cooler which allows coolant to mix with the transmission fluid, causing internal damage to the components.

- West Gardiner, ME, USA

problem #97

Jan 232014

Pathfinder 6-cyl

  • 150,000 miles
While driving transmission began shifting erratically. After stopping at a traffic light the vehicle would not accelerate above 20 mph. While attempting to get the vehicle home smoke was noticed coming from the transmission. Inspection verified transmission fluid was contaminated with coolant.

- Kingsland, GA, USA

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