CAN COMMUNICATION â NETWORK DIAGNOSTIC FLOW CHART This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗2008 Nissan Pathfinder engine problems
moderate 38 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
38
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 38 engine complaints filed for the 2008 Nissan Pathfinder, here's the actual mileage breakdown — failures cluster heaviest at 150,000+ 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
Owners have filed 38 engine 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.
No new NHTSA engine complaint has been filed on this vehicle in over 13 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine 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.
DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗VK56 CONNECTING ROD CAP BOLT SERVICE INFORMATION SERVICE INFORMATION A change has been made to the connecting rod cap bolt service part. The new service part (B in Figure 1) is visually different, but is a direct replacement for the original equipment part. IMPORTANT: See page 2 for the procedure to inspect the cap bolt service part for excessive stretch. If replacement of a single connecting rod cap bolt is indicated for any given connecting rod, both connecting rod cap bolts of the affected connecting rod must be replaced as a set.
full bulletin at NHTSA ↗DTC P0456 CAUSED BY EVAP LEAK AT VENT CONTROL VALVE O-RING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
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 across 38 complaints is radiator breakdown that contaminates transmission fluid with engine coolant. Owners report the radiator cracks or its internal cooler lines fail, mixing the two fluid systems. The contamination ruins both the radiator and transmission.
Symptoms start with overheating, cream-colored or milky fluid appearance, and transmission slipping or jerking. Some vehicles lose all power while driving—stalling in intersections or mid-freeway. One owner's wife was disabled and nearly died when her Pathfinder lost power steering and brakes; strangers had to push the truck to safety.
Nissan dealerships acknowledge this is common knowledge among service departments. Repair costs run $2,500–$9,785 for transmission replacement, often hitting $8,000 total when both radiator and transmission need replacement. Owners report Nissan refuses warranty coverage if mileage exceeds 100,000 or the original warranty period has lapsed, despite the defect being manufacturer-designed, not owner-caused.
Secondary failures include broken metal in the rear differential, timing chain noise at 61,000 miles, and ECM malfunction. Multiple owners cite class-action lawsuits but no manufacturer recall. Several say they were never informed of the defect until it failed catastrophically.
Same Nissan Pathfinder engine reports on nearby years: 2005 · 2006 · 2007
Failure modes owners describe
Radiator failure with coolant/transmission fluid contamination
Radiator develops cracks or leaks, allowing engine coolant to mix with transmission fluid. Owners report the radiator cooler lines fail, breaching the barrier between coolant and transmission systems. This contamination destroys both radiator and transmission function.
When: Typically 44,400 to 160,000 miles; multiple reports at 65k–104k miles
Symptoms owners cite: Engine overheating, temperature gauge pegs high; Transmission slipping, jerking, hesitating, or complete loss of drive; Loud noise from engine compartment (liquids being expelled); Check engine light illuminates; Transmission fluid and coolant appear cream-colored or mixed; Vehicle loses power while driving; sudden stall in traffic or intersections; Loss of power steering and brakes when transmission fails; Difficulty shifting, gear stuck in park
Repairs/costs cited: Radiator replacement $104–$500; transmission replacement $2,500–$9,785 depending on mileage and whether dealer covers repair. Many reports cite $3,000–$8,000 total repair costs. Owners often discover metal shavings in rear differential or axle as secondary damage.
Recalls/TSBs owners mention: Nissan states defect is not covered by warranty if vehicle exceeds mileage threshold (typically 100,000 miles) or warranty period. Dealers acknowledge problem as common but refuse coverage. Some reports mention class-action lawsuits and limited recall coverage for early failures.
Transmission failure secondary to radiator contamination
Transmission fails due to coolant-contaminated fluid. Owners report transmission requires complete replacement after radiator breach. Failure occurs suddenly and without warning, creating safety hazards.
When: Typically follows radiator failure by weeks to months; reported at 80k–160k miles
Symptoms owners cite: Transmission slips, bucks, or jerks violently; Loss of all forward power or reverse; Difficulty shifting gears; rough or delayed gear changes; Vehicle stalls or enters limp mode on highway; Transmission shudders during acceleration or gear shifting
Repairs/costs cited: Transmission replacement $2,500–$9,785 depending on mileage and labor rates. Nissan warranty typically does not cover if vehicle exceeds 100,000 miles or original warranty period.
Recalls/TSBs owners mention: Nissan denies warranty coverage beyond mileage/time thresholds, stating fluid contamination is secondary damage. Dealerships acknowledge the problem as common knowledge among service departments.
Timing chain noise and premature wear
Timing chain and tensioner exhibit early failure. One owner reports timing chain replacement needed at 61,000 miles; another received a $2,300 estimate for timing chain work. Cause unclear but reported alongside other engine issues in this vehicle set.
When: 61,000 miles reported; another complaint references timing chain issue without mileage detail
Symptoms owners cite: Loud humming, whirring, or chain noise from engine; Engine rattling sounds
Repairs/costs cited: Timing chain replacement estimated at $2,300 for parts and labor by Nissan dealer.
Engine Control Module (ECM) failure
ECM malfunctions, disabling instrument cluster and warning systems. One owner received a $1,500 estimate ($1,000 parts + $500 labor). Another reports all gauges, speedometer, and warning lights stop working while driving.
When: No specific mileage reported
Symptoms owners cite: All gauges, speedometer, and warning systems stop working while driving; Cruise control malfunction causing unintended acceleration; Fuel gauge displays incorrect reading
Repairs/costs cited: ECM replacement estimate $1,000 part + $500 labor = $1,500 total.
Rear axle/differential gear damage
Broken metal pieces found in rear axle housing; gears damaged. One owner reported transmission was replaced twice before mechanics discovered rear axle failure as the root cause of persistent clunking noise.
When: Discovered after multiple transmission replacements; vehicle had unknown prior history
Symptoms owners cite: Thumping or clunking noise above 40 mph; Broken metal particles in axle housing
Repairs/costs cited: Rear axle assembly replacement estimate $3,000 for parts and labor.
Recalls/TSBs owners mention: Nissan declined to cover repair after warranty period expired, even though failure occurred during warranty period but was not diagnosed until later.
Excessive coolant consumption
Vehicle consumes excessive coolant over short time periods, indicating internal leak. One owner reported issue at 44,400 miles with only 762 miles of consumption noted.
When: 44,400 miles
Symptoms owners cite: Coolant level drops rapidly; Loud rumbling sound from engine
Recalls/TSBs owners mention: Dealer unable to diagnose root cause.
Synthesized from 38 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Radiator leaked into the transmission, both will need to be replaced $4500-4800 fix. *tr
Had engine 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 engine problem on the 2008 Nissan Pathfinder?
It's a documented issue but not catastrophic. 38 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 31 complaints that reported odometer mileage, most engine failures cluster between 86,000 and 139,000 miles, with the median around 114,000. A quarter of owners report trouble before 86,000; a quarter make it past 139,000. 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 $3,100 for engine 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 engine?
No active recalls currently cover engine 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.