According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2001 Nissan Xterra has 3 documented known issues, with 1 rated critical. The most serious is First-Generation Head Gasket Failure (3.3L V6) ($1,200-$2,500 repair). Across all issues with published estimates, repair costs range from $90 to $2,500. DIY maintenance guides at au7o.io.
On the 2000-2004 Nissan Xterra, the first-generation 3.3L V6 is prone to head gasket failure, aggravated by heat soak at the rear cylinders (5 and 6) near the firewall where the catalytic-converter heat builds up and can make rear injectors fail and those cylinders run hotter. Failures typically appear at higher mileage and result in coolant/oil mixing or coolant loss and overheating.
Coolant mixed into the oil (milky residue on dipstick/oil cap)
Overheating
White exhaust smoke / sweet coolant smell
Coolant loss without obvious external leak
Combustion gases / exhaust bubbling from the radiator with cap off
How to Fix
Replace the head gaskets (often both sides) and resurface/inspect the heads; verify cylinder heads are not warped or cracked. Address cooling-system condition and any failing rear fuel injectors at the same time. Catching coolant loss early and not driving while overheating prevents head/block damage.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Fel-Pro HS 26219 PT-1 naturally aspirated cylinder-head gasket set
On the 2000-2004 Nissan Xterra, first-generation (2000-2004) Xterras with the 3.3L VG33E/VG33ER V6 commonly crack the passenger-side (right) exhaust manifold over time due to heat cycling. A Nissan TSB acknowledged the issue. A cracked manifold produces a ticking/exhaust leak noise that is loudest on cold start, can trigger the check-engine light, and can affect downstream oxygen-sensor readings and performance.
Common Symptoms
Ticking or tapping exhaust-leak noise, loudest on cold start
Noise that quiets as the engine warms up
Exhaust smell
Reduced performance / fuel economy
Check engine light from skewed O2 sensor readings
How to Fix
Replace the cracked exhaust manifold (welding repairs typically fail and re-crack, so owners are advised to replace with a new or upgraded manifold). Replace manifold gaskets and any seized exhaust studs at the same time. Inspect both manifolds since the right side is most prone but either can crack.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Dorman 674-598 right exhaust-manifold kit
Confirm VG33E/VG33ER exhaust and emissions configuration before purchase.
On the 2000-2004 Nissan Xterra, the first-generation Xterra carries the same rear-mounted EVAP vacuum cut valve and bypass solenoid as its Frontier and Pathfinder siblings, and it fails the same way — only more often, because the Xterra's buyers actually drove them through the mud, snow and gravel the mounting location is least able to survive. The assembly is visible through the rear passenger wheel well, sitting near the fuel tank on the EVAP purge line between the tank and the charcoal canister. The vacuum cut valve blocks intake manifold vacuum from reaching the tank in normal operation; the bypass valve is a normally closed solenoid the ECM grounds to deliberately route that vacuum to the tank when it wants to run the EVAP leak test. P1490 is set on the electrical side of that: the ECM has driven the solenoid and has not seen the expected circuit response, which points at the solenoid coil, its connector, or the wire between it and the ECM. Owners report the light appearing with the truck driving completely normally, which is what makes this code frustrating — there is nothing to feel, nothing to hear, and no reason to suspect a part hanging under the back of the truck. In salt-belt trucks the connector is often full of corrosion and the bracket hardware is rusted; in trucks that see off-road use the valve body itself is packed with grit. A less common but real variant on this platform: a broken or missing exhaust tailpipe section has been known to route hot gas near the valve and heat-damage the plastic body outright, and that heat damage can extend to melted wiring.
Check engine light with no change in how the truck drives
P1490 returns after clearing
Emissions test failure or EVAP monitor not ready
Solenoid does not click when energized on the bench
Rusted bracket and corroded two-pin connector at the rear of the vehicle
How to Fix
Start under the truck at the rear passenger-side wheel well rather than in the engine bay. Disconnect the solenoid and inspect the connector — corroded, spread or backed-out pins are common and are a cheap fix. Bench-test the valve by applying battery voltage across its terminals: airflow should pass between ports A and B with voltage applied and stop cleanly when it is removed, with the transition happening in under a second. Blowing through the ports with and without power is the field version of that test. A valve that does not click, sticks partially open, or leaks with voltage removed should be replaced; a valve that clicks correctly but still sets the code means the problem lies in the harness or the ECM driver circuit, so ohm the wire from the solenoid connector back to the ECM and look for chafe points along the frame. Where the valve is merely clogged, it can be disassembled, cleaned of rust scale and debris, and reinstalled — a well-documented forum repair that saves the cost of the part. Inspect and replace the short rubber lines between the cut valve and bypass valve while access is open; they harden and split at this age and will set EVAP leak codes even after a good solenoid is fitted. Soak the bracket fasteners with penetrating oil before attempting removal. Finally, verify the exhaust behind the muffler is intact and not blowing on the valve, and check the nearby wiring for heat damage if it is not. Clear the code and complete a drive cycle with the tank between roughly a quarter and three-quarters full so the EVAP monitor can actually run and confirm the fix.
NISSAN IS RECALLING CERTAIN MODEL YEAR 2002-2004 FRONTIER VEHICLES MANUFACTURED FROM JULY 9, 2001 THROUGH OCTOBER 20, 2004, AND MODEL YEAR 2002-2004, XTERRA VEHICLES MANUFACTURED FROM JULY 9, 2001, THROUGH JANUARY 6, 2005. OVER TIME CORROSION MAY FORM IN THE LOWER STEERING COLUMN JOINT AND LIMIT MOVEMENT OF THE JOINT. THE LIMITED MOVEMENT OF THIS JOINT MAY CREATE EXCESSIVE LOAD ON THE LOWER STEERING COLUMN SHAFT. IF THE VEHICLE CONTINUES TO BE DRIVEN IN THIS CONDITION, IT MAY LEAD TO CRACKING OF THE SHAFT DURING LOW SPEED MANEUVERS THAT REQUIRE LARGE STEERING INPUTS.
Campaign #10V55400011/11/2010
EQUIPMENT
CERTAIN HOPKINS AFTERMARKET TRAILER BRAKE CONTROL CONNECTION HARNESSES SOLD FOR USE ON CERTAIN MODELS OF NISSAN VEHICLES WHICH ARE LISTED ABOVE. THE INTERNAL PART NUMBERS WITHIN HOPKINS ARE: 1010476025, 1040376025, 1110476025, 1170376025, 1290376025, 1010476035, 1040376035, 1110476035, 1170376035, AND 1290376035. A WIRE MAY HAVE BEEN PLACED IN AN INCORRECT POSITION IN THE ELECTRICAL CONNECTOR HOUSING. THIS RESULTS IN AN INCORRECT ROUTING OF WIRES BETWEEN THE TRAILER BRAKE CONTROLLER AND THE TOWING VEHICLE WIRING SYSTEM.
Campaign #07E04600003/07/2007
TRAILER HITCHES
ON CERTAIN SPORT UTILITY VEHICLES, THE ACCESSORY TOW HITCH ATTACHMENT BOLTS MAY NOT HAVE BEEN TIGHTENED TO THE PROPER SPECIFICATION.
Campaign #04V58100015/12/2004
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
ON CERTAIN PICKUP TRUCKS EQUIPPED WITH SIX CYLINDER ENGINES AND SPORT UTILITY VEHICLES EQUIPPED WITH FOUR OR SIX CYLINDER ENGINES, THE FUEL PUMP TERMINAL ON THE FUEL-SENDING UNIT CAN DEVELOP A CRACK IN THE PLASTIC MOLDING. THIS CAN CAUSE THE TERMINAL STRIP TO CORRODE UNDER SOME ENVIRONMENTAL CONDITIONS.
Campaign #04V23000024/05/2004
EXTERIOR LIGHTING
SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2001 Nissan Xterra has 3 documented issues. The most frequently reported are: First-Generation Head Gasket Failure (3.3L V6), First-Generation Exhaust Manifold Cracking (3.3L V6), EVAP Vacuum Cut Valve Bypass Solenoid Fails Behind the Rear Wheel Well. Of these, 1 is rated critical and should be addressed promptly.
Is the Nissan Xterra reliable?
The 2001 Nissan Xterra has 3 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: First-Generation Head Gasket Failure (3.3L V6). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Nissan Xterra problems?
Repair costs for known Nissan Xterra issues range from $90 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, First-Generation Head Gasket Failure (3.3L V6), typically costs $1,200-$2,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2000-2004 Nissan Xterra First-Generation Head Gasket Failure (3.3L V6)?
The first-generation 3.3L V6 is prone to head gasket failure, aggravated by heat soak at the rear cylinders (5 and 6) near the firewall where the catalytic-converter heat builds up and can make rear injectors fail and those cylinders run hotter. Failures typically appear at highe… Repairs typically run $1,200-$2,500. Severity: high.
What is the 2000-2004 Nissan Xterra First-Generation Exhaust Manifold Cracking (3.3L V6)?
First-generation (2000-2004) Xterras with the 3.3L VG33E/VG33ER V6 commonly crack the passenger-side (right) exhaust manifold over time due to heat cycling. A Nissan TSB acknowledged the issue. A cracked manifold produces a ticking/exhaust leak noise that is loudest on cold start… Severity: medium.
What is the 2000-2004 Nissan Xterra EVAP Vacuum Cut Valve Bypass Solenoid Fails Behind the Rear Wheel Well?
The first-generation Xterra carries the same rear-mounted EVAP vacuum cut valve and bypass solenoid as its Frontier and Pathfinder siblings, and it fails the same way — only more often, because the Xterra's buyers actually drove them through the mud, snow and gravel the mounting… Repairs typically run $90-$350. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
