Transmission failed at intersection leaving vehicle unable to move. Problem was caused by radiator fluid mixing with transmission fluid. I contacted Nissan about the issue and they denied any claim for repairs. Nissan has known about the issue and settled the claims for a small number of people. They made it basically impossible to recover any damages because they require a deductible of…
2005 Nissan Pathfinder powertrain problems
moderate 369 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
369
Recalls
0
Avg fix
$2,500
5crashes
4fires
When does it fail?
Of the 369 powertrain complaints filed for the 2005 Nissan Pathfinder, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 19 model years of Nissan Pathfinder we track for powertrain problems, this one carries the most owner complaints on file — 369.
Powertrain accounts for 35% of every owner complaint on file for this vehicle — the dominant problem area across 11 categories tracked.
The failure pattern owners describe
Buyer takeaway: The 2005 Pathfinder is prone to radiator-to-transmission coolant contamination that destroys both components, typically between 50,000 and 150,000 miles, often after Nissan's extended 80,000-mile warranty expires. Repair costs $3,500–$7,000, and Nissan has consistently denied or minimized warranty coverage despite acknowledging the defect; some owners report recurrent failure shortly after repair.
Owners report coolant from the radiator leaking into the transmission, causing catastrophic failure of both components. The failure typically occurs between 50,000 and 150,000 miles, though many happen well after the original 60,000-mile powertrain warranty expires. Early signs include loss of cabin heat, transmission slipping or hesitation during acceleration, rough or hard shifting, vibration or shuddering between gears, and service engine lights. As contamination worsens, transmissions lose power entirely—some vehicles won't exceed 20–25 mph or can't engage reverse. Multiple owners report sudden failures while driving on highways or in heavy traffic, creating serious safety hazards. Dealers consistently confirm coolant in transmission fluid (appearing milky white or cream-colored) and radiator fluid in coolant. Nissan extended the drivetrain warranty to 80,000 miles on known affected vehicles, but most failures occur after that threshold. Owners report repair costs ranging from $3,500 to $7,000 for radiator and transmission replacement. Several mention Nissan denied or delayed warranty coverage despite acknowledging the defect. A few owners whose vehicles were repaired have experienced recurrent transmission failure shortly after. One owner reported the vehicle catching fire after catastrophic transmission failure and overheating.
Same Nissan Pathfinder powertrain reports on nearby years: 2006 · 2007 · 2008
Failure modes owners describe
Radiator-to-transmission coolant leak causing transmission failure
Radiator develops internal cracks or leaks, allowing engine coolant to migrate into the transmission cooler system and contaminate transmission fluid. The mixture destroys transmission components including torque converter, seals, and valves, rendering the transmission inoperable. Also damages radiator.
When: Typically 50,000–150,000 miles; many occur after 80,000 miles when extended warranty expires
Symptoms owners cite: Loss of cabin heat while idle; Transmission slipping or hesitation during acceleration; Rough, hard, or jerky shifts between gears; Vibration or shuddering at 45–65 mph; Service engine light or check engine codes (P1754, P1759, P1764, P0102, P0744, P1746); Transmission won't engage gears or engage only briefly; Vehicle unable to exceed 20–25 mph or stalls on highway; High engine revs but no power delivery; Milky white or cream-colored fluid in radiator or transmission; Burning smell from transmission; Vehicle suddenly loses all power while driving
Codes mentioned: P1754, P1759, P1764, P0102, P0744, P1746
Repairs/costs cited: Radiator replacement, transmission rebuild or replacement, coolant and transmission fluid flush (often flushed multiple times). Repair costs cited: $3,500–$7,000. One mechanic installed external transmission oil cooler to bypass radiator. Some owners report recurrent failure within months or 500–5,000 miles after repair.
Recalls/TSBs owners mention: Nissan extended drivetrain warranty to 80,000 miles (or 8 years, whichever comes first) with no customer co-pay; 80,000–90,000 miles with $2,500 co-pay; 90,000–100,000 miles with $3,000 co-pay. Class action settlement (Case No. 10-CV-07493) referenced by owners. Nissan denied coverage for most failures occurring after 80,000 miles and refused assistance based on vehicle mileage or customer 'loyalty.' One owner's vehicle was excluded from warranty extension for unexplained reasons. Multiple dealers confirmed awareness of the issue but claimed Nissan would not reimburse repairs.
Transmission failure with subsequent fire
Contaminated transmission overheats catastrophically, resulting in thermal event and vehicle fire.
When: Recurrent; owner reported initial failure in 2009, symptoms returned in 2014 (93,000 miles) after earlier radiator replacement and transmission flush
Symptoms owners cite: Shudder when shifting; Transmission slip during acceleration; Thick black smoke from beneath vehicle; Flames visible under running boards; Complete vehicle destruction within minutes
Repairs/costs cited: Vehicle completely destroyed by fire; no repair attempted. Original repair (2009) cost ~$2,500 for radiator replacement and transmission flush.
Recalls/TSBs owners mention: Dealership showed no assistance; owner states 'the dealership could care less.'
Synthesized from 369 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 8 most recent
Over heats, coolent leaked into transmission causing transmission to go out
Transmission failure just bought truck for about 3 months for daughter never drove it first putting on the highway truck stop moving in the middle of traffic in the fast lane cause two accident get it pull home then found out its the transmission an alot of people having the same problem once it cools off it will drive till the transmission gets hot then it stops working again
Transmission radiator ruptured. Coolant flooded transmission and destroyed transmission. This ruptured occurred while vehicle was in motion traveling on interstate.
I own a 2005 Nissan pathfinder. The engine coolant contaminated the transmission fluid because an internal piece broke. The only reason I noticed any issue is the reverse gear began to have trouble engaging. After visiting two mechanics, I had to replace the entire radiator/coolant system and put in a new transmission. Although Nissan has acknowledged this is a common issue, they refused to…
Tl* the contact owns a 2005 Nissan pathfinder. The contact stated that while driving at approximately 20 MPH, the vehicle stalled without warning. The vehicle was restarted after several attempts. The failure recurred multiple times. The vehicle was towed to a dealer where it was diagnosed that the transmission needed to be replaced. The vehicle was repaired but the failure recurred. The…
The transmission in the 2005 Nissan pathfinder slips and jerks while driving at highway speeds. The slippage can cause the vehicle to rapidly decelerate in traffic increasing the likelihood of an accident. The rapid jerking of the vehicle can cause the vehicle to loose control on its own or frighten or disorient the driver causing the driver to loose control of the vehicle.
Vibration from rear wheel begins at 40 MPH and increases with vehicle speed. Tires and u joints have been replaced - problem persists. Identical to transmission/radiator issues described in several consumer forums. I am reluctant to drive this vehicle, especially on the highway. *tr
Had powertrain trouble with your 2005 Nissan Pathfinder?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2005 Nissan Pathfinder?
It's a documented issue but not catastrophic. 369 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Across the 343 complaints that reported odometer mileage, most powertrain failures cluster between 85,208 and 122,000 miles, with the median around 102,000. A quarter of owners report trouble before 85,208; a quarter make it past 122,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2005/Nissan/Pathfinder.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.