SERVICE INFORMATION Replacement 5-speed rear wheel drive Automatic Transmission (A/T) assemblies and replacement control valves (valve bodies) now come with blank Transmission Control Modules (TCMs). Blank TCMs come without software and must be programmed (not reprogrammed) and then configured after they are installed. When ordering a replacement A/T or control valve, use the Nissan electronic parts information systems to obtain the correct software program part number See this bulletin for further detail.
full bulletin at NHTSA ↗2008 Nissan Pathfinder powertrain problems
moderate 133 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
133
Recalls
0
Avg fix
$2,500
1crash
When does it fail?
Of the 133 powertrain complaints filed for the 2008 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
Powertrain accounts for 41% of every owner complaint on file for this vehicle — the dominant problem area across 10 categories tracked.
Owners have filed 133 powertrain complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
IF YOU CONFIRM: A remanufactured automatic transmission supplied by ATC Drivetrain is installed in an APPLIED VEHICLE AND CONSULT-III plus (C-III plus) is not able to communicate with the TCM through Diagnosis (One System) OR C-III plus is able to communicate with the TCM, but the TCM part number?s (P/N) sixth digit is a "5", "6", or "7" (for example, 31020-7xxxx). NOTE: To determine if an applied vehicle is equipped with an ATC Drivetrain remanufactured A/T, see page 3. ACTION: Refer to the Flow Chart on page 2. See this bulletin for further detail.
full bulletin at NHTSA ↗SERVICE INFORMATION When diagnosing possible power steering gear (rack and pinion steering rack, or steering rack) leak issues, it may appear the steering rack is leaking when actually, it?s not. Use this service bulletin to help make a more accurate diagnosis of the steering rack. See this bulletin for further detail.
full bulletin at NHTSA ↗SERVICE INFORMATION If a customer describes lack of power or poor acceleration, perform the following checks before attempting any repair: * Check for stored DTCs. * Check if the driver is resting their left foot on the brake pedal while accelerating. Advise the customer not to rest their foot on the brake while accelerating. * Use CONSULT-III plus in Engine Data Monitor to check operation of the brake lamp circuit signal. Monitor the brake switch during the incident; it should be "OFF". Please see this bulletn for further details.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The dominant failure mode here is coolant seeping from the radiator's integral transmission cooler directly into the transmission fluid. Owners describe the transmission fluid turning milky white, rust-colored, or watery. The contamination destroys the transmission clutches, seals, and the transmission control module (TCM), rendering the vehicle undriveable—sometimes without warning while on the highway.
Early symptoms vary: shuddering during gear shifts (especially 1st-to-2nd), jerking, hesitation, or slipping at low or highway speeds. The check engine light comes on. The A/T ECU fuse blows repeatedly. Some vehicles shut down entirely while moving, creating serious safety hazards. Owners report being stuck in heavy traffic with children aboard, or losing power while merging on interstates.
Owners consistently state they're unaware of the problem until failure occurs. Many took their vehicles to Nissan dealers for routine service and were never told to replace the radiator preemptively. The transmission fluid contamination causes secondary damage to heater cores and heating systems, and can damage the vehicle's electrical control systems.
Repair costs run $3,000 to $6,000+. Nissan's extended warranty (from a 2012 class action settlement) covers repairs but requires owners to pay a $3,000 co-pay, and only applies to vehicles under 100,000 miles or 8 years old. Owners who exceed either limit get no help. Many also report the timing chain requiring replacement on the same vehicles—an additional $1,650–$1,800 expense.
Same Nissan Pathfinder powertrain reports on nearby years: 2005 · 2006 · 2007
Failure modes owners describe
Radiator-to-transmission coolant leak
The integral transmission cooler lines inside the radiator crack or fail, allowing engine coolant to contaminate the transmission fluid. Owners describe milky, discolored, rust-laden transmission fluid and loss of fluid viscosity. The contaminated fluid damages transmission clutches and internal seals, and can cause transmission control module (TCM) damage or electrical fuse blowouts.
When: Failures reported across mileage ranges: 60,000 to 157,500 miles. Many at 90,000–105,000 miles. Some failures early (within first 20 miles of ownership for used vehicles), others after years of service.
Symptoms owners cite: Transmission shudders, jerks, or hesitates when shifting, especially 1st-to-2nd or 2nd-to-3rd gear; Transmission slips, loses power, or refuses to engage gears; Violent jerking, lurching, or clunking during acceleration or gear changes; Transmission overheats; Vehicle suddenly loses power or ability to accelerate on highway; Check engine light or service engine light illuminates; A/T ECU fuse repeatedly blows after replacement; Transmission control module (TCM) malfunction; Loud grinding or noise from transmission; Transmission fluid milky white, rust-colored, or smells of coolant; Vehicle will not start after shut-down, or starter relay clicks but starter does not respond; Heater blows cold air even when set to maximum heat; Engine overheating and coolant loss
Codes mentioned: P0463 - Fuel gauge sending unit malfunction (secondary complaint, separate issue), U1000 - Controller Area Network (CAN) communication line signal malfunction, P1774 - Low coast brake-fastens solenoid valve function
Repairs/costs cited: Owners report transmission rebuilds or replacements costing $3,000–$6,000+ including parts and labor. Radiator replacement required ($800–$2,900+). Some opted for aftermarket external transmission cooler to prevent recurrence. Nissan dealership estimates: $4,165–$7,000+. Transmission flush alone ($150) temporary; does not resolve underlying contamination.
Recalls/TSBs owners mention: Extended warranty program (100,000 miles / 8 years, settled October 2012 class action lawsuit). Owners who qualify must pay $3,000 co-pay. Nissan refused coverage for owners at or over mileage limits. Nissan CPO program denies fluid contamination claims citing 'no fluid warranty.' Dealers report they are aware of the issue but claim unable to mention it unless diagnostic code present. Nissan offered $500 goodwill on one $6,000+ vehicle. Some owners denied coverage under extended warranty due to ownership transfer or timing.
Timing chain noise and wear
High-pitched rattling or grinding noise from the timing chain, indicating premature wear or failure. Owners report being told by multiple Nissan dealerships that replacement is necessary. This is described as a separate known issue affecting the same model year.
When: Reported at various mileages; one owner noted issue after only 20 minutes of initial driving on a newly purchased used vehicle. Formal repair estimates issued; no specific mileage cited for onset in most cases.
Symptoms owners cite: High-pitched rattling or grinding noise from engine, especially during acceleration; Strange internal noise from engine area
Repairs/costs cited: Timing chain replacement estimate: $1,650–$1,800 (parts and labor). One owner's warranty paid ~$1,800 toward timing chain assembly replacement. Described as 'another Nissan known issue' by owners.
Recalls/TSBs owners mention: Nissan dealerships diagnosed the issue; no recall issued. Class action lawsuit mentioned; settlement details not provided in narratives. Some owners found extended warranty would cover part of cost with deductible.
Transmission electrical/control failure secondary to coolant contamination
Transmission control module (TCM) and related electrical circuits burn out or fail when contaminated coolant damages internal components. A/T ECU fuse blows repeatedly. Vehicle loses all electrical control of transmission, sometimes affecting starter relay response and engine start capability.
When: Occurs after radiator-to-transmission coolant leak is established. One case reported TCM failure immediately after driving 20 minutes home from purchase.
Symptoms owners cite: Vehicle will not start or will not respond to starter; A/T ECU fuse repeatedly blows; All dashboard lights cycle on/off erratically; Odometer and speedometer go off; Service engine light comes on; Vehicle shuts down while in motion without warning; No braking function when vehicle is off (loss of power steering/brake assist noted in one case)
Codes mentioned: U1000 - CAN communication line signal malfunction
Repairs/costs cited: TCM replacement or ECU repair required. Owners report $1,000+ diagnostic fees and thousands more in replacement parts. One owner had transmission sit in shop for over a month and purchased replacement vehicle due to extended downtime.
Recalls/TSBs owners mention: Nissan initially told owners the TCM was broken; warranty denied for those outside mileage/age limits. Some owners offered class action lawsuit claim numbers to file separately.
Fuel gauge / fuel sending unit malfunction
Fuel gauge fails to read fuel level accurately or ceases to function entirely. Owners run out of fuel unexpectedly while driving, stranding vehicles on highways and in dangerous traffic situations.
When: Reported as recurring issue (one owner mentioned running out of fuel multiple times). Diagnostic code P0463 thrown at various mileages.
Symptoms owners cite: Fuel gauge does not indicate fuel level correctly; Fuel gauge fails completely; Vehicle stalls or shuts down due to fuel exhaustion with no warning; Gauge sensor warning light illuminates; Vehicle will not pass inspection due to gauge malfunction
Codes mentioned: P0463 - Fuel gauge sending unit malfunction
Repairs/costs cited: One owner paid $600 for fuel pump/gauge repair. Costs not consistently reported across narratives. One owner states this is a separate recall issue from radiator/transmission problem.
Recalls/TSBs owners mention: Recall issued for some vehicles, but many owners' VINs not included in recall list. Service representatives reportedly claim certain VINs are not in recall databases despite identical symptoms. Nissan dealership service unable or unwilling to proactively mention issue.
Heating system malfunction secondary to coolant contamination
Heater blows cold air despite thermostat set to maximum heat. Caused by coolant mixing with transmission fluid, affecting heater core flow or contaminating coolant system.
When: Occurs concurrent with or shortly after radiator-to-transmission leak is discovered. One owner reported onset during long road trip.
Symptoms owners cite: Heater blows cold air even when set to warmest setting; Heater blows cold in rear seats consistently; Heater becomes intermittently unreliable; requires gas pedal depression to heat air; Heater hose ruptures or becomes weak due to fluid contamination
Repairs/costs cited: Heater hose replacement noted in one case as 'beyond repair.' Requires coolant system flush and possible heater core replacement. Cost not separately itemized in most narratives; included in overall radiator/transmission repair bills.
Recalls/TSBs owners mention: Nissan service department diagnostics unable to locate problem in some cases. Owners report being told 'nothing is wrong with this system' despite repeated symptoms and service visits.
Synthesized from 133 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 10 most recent
Transmisson inner cooler tank in radiator leaks , getting water in transmisson. Ruining transmission /computer etc. Had to be rebuit. Nissan wanted over $5,ooo. Got it repaired at other shop over $3,000 with still having to get it programmed at Nissan. Poor design and faulty tanks in radiator. I had shop place external transmisson radiator and new radiator to never let this happen again.…
At just over 100k miles (101406) my radiator leaked into the transmission and ruined the transmission. Nissan will not cover the repair at all because I am 1406 out of the class action settlement. Speaking with the local dealer they said there was nothing I could have done from the service side to prevent it.
Car began experiencing difficulty shifting. Repair shop reports transmission fluid and coolant intermixing, requiring replacement of both the radiator and the transmission.
Radiator leaked and mixed with transmission. Transmission oil looks like strawberry milkshake. Gears now grind when shifting during normal driving.
Transmission was slipping in first gear. Has when into limp mode many times. Have had the fluid change a couple times. Once it was slipping in the middle of a busy intersection. Had it remove and rebuilt. Antifreeze was found in the transmission. How many reports before they recall these vehicles.
Tl* the contact owns a 2008 Nissan pathfinder. The contact stated that the transmission failed to function properly. The gears were slipping and not changing normally. An independent mechanic flushed the transmission, which provided a temporary remedy. A second independent mechanic diagnosed the transmission failure and installed a rebuilt transmission. The vehicle was repaired. A dealer was not…
Strawberry milkshake-like fluid leaking from the radiator infiltrated the transmission, causing catatrophic failure of the transmission. This problem was widely publicized in other states but not california. I was almost involved in an accident because of the car's failure to accelerate while entering onto the freeway. Shame on Nissan not to extend warnings nationwide.
The transmission started slipping and the radiator fluid is mixing with the transmission fluid. The transmission was replaced once, and now the transmission needs to be replaced again.
My raditor leaked and had to be replaced. They flushed the transmission and a week later I need a new transmission.
Tl* the contact owns a 2008 Nissan pathfinder. While accelerating, the vehicle made a vibrating motion. Also, while driving approximately 40 MPH, the vehicle stalled. The failure recurred multiple times. The vehicle was taken to a dealer where it was diagnosed that the radiator was leaking onto the transmission and the transmission needed to be replaced. The vehicle was not repaired. The…
Had powertrain trouble with your 2008 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 2008 Nissan Pathfinder?
It's a documented issue but not catastrophic. 133 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 119 complaints that reported odometer mileage, most powertrain failures cluster between 97,697 and 138,000 miles, with the median around 113,000. A quarter of owners report trouble before 97,697; a quarter make it past 138,000. 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/2008/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.