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 ↗2006 Nissan Armada engine problems
severe 12 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
12
Recalls
0
Avg fix
$3,100
2fires
What stands out
Among the 9 model years of Nissan Armada in our records for engine problems, this one ranks #2 by owner-complaint volume.
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.
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 ↗OBD II EVAP Tube Warranty Enhancement The update below was sent out to Regions and Dealers in August of this year. We are re-circulating this update to make regional and dealer personnel aware that we are re-notifying customers at this time.
full bulletin at NHTSA ↗TITAN, ARMADA, NV; ENGINE OIL LEAK AT RIGHT SIDE BLOCK BALL PLUG This bulletin has been amended. The APPLIED VEHICLES section has been updated. No other changes have been made. Please discard all previous versions of this bulletin.
full bulletin at NHTSA ↗IF YOU CONFRIM An oil leak at the right side block ball plug behind the alternator. ACTION Use a punch to seat the block ball plug in the hole (refer to the Service Procedure). NOTE - Do not replace the engine block for this incident if it should occur. See this bulletin for further detail.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report two critical safety issues with 2006 Armadas. The cooling fan has caught fire in at least one case with no warning indicators—the fire destroyed the vehicle while the driver and children were inside. That owner had a June 2008 recall notice they never received.
Exhaust manifold cracking is chronic, striking vehicles in the 50,000–85,000 mile range and causing exhaust odor in the cabin and engine knock. One owner replaced the manifold, only to have it crack again within a year. Nissan extended warranty coverage to 80,000 miles on some units, but owners outside that window get no help.
Engine stalling plagues multiple Armadas, sometimes accompanied by brake warnings or check engine lights. One owner's vehicle stalled four times shortly after a recall repair was supposedly performed. Sensor replacements and ECM relay replacement have been attempted without permanently fixing the problem.
Catalytic converter chambers are also failing prematurely—one owner saw chamber one fail, get replaced at the dealership, then chamber two fail within a week. Owners consistently report Nissan denies knowledge of these issues or refuses assistance, even when defects recur after paid repairs.
Same Nissan Armada engine reports on nearby years: 2005
Failure modes owners describe
Engine fire from cooling fan defect
Cooling fan caught fire while vehicle was operating, creating a fire hazard that destroyed the vehicle. No warning lights appeared before the fire. Owners reported the defect was linked to a manufacturer recall issued in June 2008 that they were not notified about.
When: At 182,000 miles; also reported at approximately 4 years after purchase in 2010
Symptoms owners cite: Burning smell inside cabin; Smoke coming from under hood; Cooling fan visibly on fire; No warning indicator on dashboard
Repairs/costs cited: Vehicle was a total loss and destroyed by fire before any repairs could be attempted
Recalls/TSBs owners mention: NHTSA Campaign 10V517000 (Engine and Engine Cooling) and 08V284000 (Equipment); owners report not receiving recall notice and no response from Nissan regarding responsibility
Cracked exhaust manifolds
Exhaust manifolds develop cracks causing exhaust odor to enter the cabin and knocking sounds during operation. Problem surfaces in the 50,000-85,000 mile range. Nissan extended warranty coverage to 80,000 miles on some vehicles but many owners fall outside this window or are denied coverage.
When: 60,000 miles; 80,000 miles; 85,000 miles; recurring within one year after replacement
Symptoms owners cite: Knocking sounds from engine; Exhaust odor in cabin; Abnormal engine noise; Burning smell
Repairs/costs cited: Dealership replacement of exhaust manifolds; one owner reported second crack within one year of replacement; repair costs not specified by owners
Recalls/TSBs owners mention: Nissan extended warranty to 80,000 miles on some 2006 Armadas but denied coverage to owners outside that window; Nissan Consumer Affairs stated they would not confirm this as a known issue
Catalytic converter chamber failure
Catalytic converter chambers fail prematurely, triggering check engine lights. One owner experienced failure of chamber one, replacement, then failure of chamber two within one week, suggesting systemic exhaust system stress.
When: 52,580 miles
Symptoms owners cite: Check engine warning light illuminates; Possible power loss
Repairs/costs cited: Dealership diagnosis and replacement of catalytic converter; second failure occurred within one week; vehicle not repaired after second failure
Engine stalling with electrical faults
Engine stalls during operation at various speeds without warning, sometimes accompanied by brake warning indicator. Stalling recurs multiple times. One owner's vehicle stalled four times shortly after recall service was performed. Sensor replacements attempted but failures persist in some cases.
When: 55,000 miles; 85,000 miles (two occurrences); 87,700 miles; 131,000 miles; one stall occurred 10 months after recall repair
Symptoms owners cite: Engine stalls while driving; Hesitation followed by stall; Brake warning indicator illuminates; Check engine warning light illuminates; Loss of power; Difficulty restarting
Repairs/costs cited: Dealership and independent mechanic diagnosis; replacement of sensor; ECM relay replacement recommended; repairs did not permanently resolve problem in reported cases
Recalls/TSBs owners mention: NHTSA Campaign 10V517000 (Engine and Engine Cooling); some owners' VINs reported as not included in recall despite matching year/model; manufacturer offered no further assistance when informed
Synthesized from 12 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had engine trouble with your 2006 Nissan Armada?
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 2006 Nissan Armada?
It's a meaningful issue. 12 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 11 complaints that reported odometer mileage, most engine failures cluster between 60,000 and 130,000 miles, with the median around 85,000. A quarter of owners report trouble before 60,000; a quarter make it past 130,000. 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/2006/Nissan/Armada.
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.