2006 Nissan Frontier Engine and Engine Cooling Problems

Source: NHTSA · Updated Oct 9, 2026 · 74 complaints analyzed

Owners have filed 74 complaints with NHTSA about engine and engine cooling problems on the 2006 Nissan Frontier, 12% of all complaints for this model year. Half of the reports with a mileage happened before 92,000 miles. The words owners use most often: “transmission radiator” (16% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Transmission radiator: mentioned in 12 of 74 complaints (16%)
  • Timing chain: mentioned in 10 of 74 complaints (14%)
  • Coolant leaked: mentioned in 6 of 74 complaints (8%)
  • Class action: mentioned in 6 of 74 complaints (8%)

At what mileage do engine and engine cooling problems happen?

Based on 66 complaints that reported the odometer reading.

Under 10k miles3 · 5%
10k–25k miles2 · 3%
25k–50k miles2 · 3%
50k–75k miles7 · 11%
75k–100k miles28 · 42%
100k–150k miles19 · 29%
150k+ miles5 · 8%

How serious are the reports?

Of 74 complaints, 1 mention a crash, 1 a fire.

Nissan Frontier engine and engine cooling complaints by model year

Peak: 2005, with 106 complaints
1998: 101998101999: 101999102000: 9200092001: 222001222002: 112002112003: 4200342004: 3200432005: 10620051062006: 742006742007: 622007622008: 9200892010: 2201022011: 2201122012: 120121

n = 325 complaints · Source: NHTSA

Model yearEngine and Engine Cooling complaintsShare of that yearMedian miles
2012 Frontier11%179,002
2011 Frontier23%160,000
2010 Frontier23%44,880
2008 Frontier97%87,390
2007 Frontier6212%100,500
2006 Frontier7412%92,000
2005 Frontier10620%95,997
2004 Frontier35%39,000
2003 Frontier45%16,000
2002 Frontier119%35,365
2001 Frontier2216%52,500
2000 Frontier95%85,000
1999 Frontier1013%60,078
1998 Frontier108%97,500

When owners reported it

Peak: 2013, with 19 complaints
2008: 2200822009: 1200912010: 7201072011: 122011122012: 6201262013: 192013192014: 182014182015: 3201532016: 2201622017: 1201712018: 1201812024: 1202412026: 120261

n = 74 complaints · Source: NHTSA

Related recalls (1)

Engine and engine coolingOct 28, 2010 · NHTSA campaign 10V517000 · 747,480 vehicles

Problem: Nissan is recalling certain model year 2004-2006 armada, titan, infiniti qx56 and model year 2005-2006 frontier, pathfinder and xterra vehicles. The intelligent power distribution module (ipdm) assembly contains an engine control module (ecm) relay that has a diode for electrical current noise reduction. The ecm relay may allow silicon vapor to form and, over time, the silicon evaporates from the diode molding which causes silicon oxide to develop on the ecm relay contact due to arcing.

Risk: This could cause engine stalling increasing the risk of a crash.

Fix: Dealers will replace the ecm relay inside the ipdm assembly. This service will be performed free of charge. The safety recall began on december 6, 2010. Owners may contact nissan at 1-800-647-7261.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

See attached document for complaint.

Received Apr 1, 2026 · NHTSA complaint 11728571

The contact owns a 2006 Nissan Frontier. The contact stated that the vehicle was leaking oil. The contact stated that the check engine warning light was illuminated. The contact drove the vehicle to a local dealer who diagnosed that the valve cover gasket needed to be replaced. Additionally, the…

Received Feb 12, 2024 · NHTSA complaint 11571478

Tl* the contact owns a 2006 nissan frontier. The contact stated that the radiator cracked, which caused transmission fluid and radiator coolant to mix together. The failure eventually caused the transmission to fail. The vehicle was towed to banister nissan of norfolk (1250 n military hwy, norfolk…

Received Nov 20, 2018 · NHTSA complaint 11152898
Nissan Frontier
Nissan_Frontier_(D41)_Pro-4X at Automesse Ludwigsburg 2022. Representative photo; appearance varies by model year. Photo: Alexander Migl, CC BY-SA 4.0, via Wikimedia Commons.

Frequently asked questions

Do all 2006 Nissan Frontiers have engine and engine cooling problems?

No. NHTSA has 74 owner complaints about engine and engine cooling for the 2006 Nissan Frontier (12% of the 617 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the 2006 Nissan Frontier engine and engine cooling?

Yes: 1 safety recall list engine and engine cooling. Check your VIN on NHTSA.gov to see whether the fix was done on your car.

At what mileage do engine and engine cooling problems start?

The median reported mileage is 92,000 miles: half of the reports with a mileage came before that.

What do owners say about engine and engine cooling problems on the 2006 Nissan Frontier?

The most frequent phrase is “transmission radiator”, in 12 of 74 complaints, followed by “timing chain” (10).

Other 2006 Nissan Frontier problems

See all 2006 Nissan Frontier problems or engine and engine cooling problems across all Frontier years.