According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2000 Nissan Pathfinder has 1 documented issue. No issues are rated critical, indicating generally reliable ownership. Across all issues with published estimates, repair costs range from $90 to $350. DIY maintenance guides at au7o.io.
On the 1998-2004 Nissan Pathfinder, on R50-generation Pathfinders the EVAP vacuum cut valve and its bypass solenoid are not under the hood — they sit outside on a steel bracket beneath the floor pan, just behind the driver's-side rear spring and forward of the fuel tank. Forum diagnosis of this code repeatedly puts the fault in that exposed pair: owners describe a green bypass solenoid and a white cut valve on a bracket that has spent its life in the road-salt spray thrown off the rear tire. Two things go wrong there. The solenoid's coil and its two-pin connector corrode until the ECM can no longer see a proper circuit, which is exactly what P1490 reports — the ECM is not getting the expected electrical feedback from the bypass valve driver circuit, as distinct from P1491, which is set when the valve is electrically alive but does not actually change the pressure in the tank during the leak test. The other failure is mechanical: grit and rust scale work into the valve body so the plunger sticks, or the short rubber hoses between the cut valve and bypass valve go hard and crack. Because this whole assembly only operates during the ECM's on-board EVAP diagnostic — the bypass valve is normally closed and opens only so intake manifold vacuum can be applied to the tank to check it for leaks — the driver usually notices nothing at all except the check engine light. There is no misfire, no drivability change, no fuel economy penalty. The code's real cost is a failed emissions inspection and a permanently lit MIL, and it tends to come back a few weeks after a code clear because the diagnostic only runs under a narrow set of fuel-level and drive-cycle conditions.
Failed state emissions or OBD-II readiness inspection
EVAP readiness monitor will not set to ready
Corroded connector or rusted bracket at the rear underbody solenoid
How to Fix
Diagnose the circuit before buying anything. Raise the truck, find the bracket behind the driver's rear spring, and unplug the bypass solenoid. Bench-test it the way the factory manual specifies: apply battery voltage across the two terminals and confirm air passes between ports A and B, then remove voltage and confirm it seals; the valve must switch in one second or less. If it does not click at all, or does not seal, it is bad. If it clicks correctly on the bench, the fault is upstream — check the harness for a broken or chafed wire where it runs along the frame rail, and check the connector pins for green corrosion, spread terminals, or water sitting in the shell. A surprising number of these are fixed by cleaning and re-pinning the connector and packing it with dielectric grease rather than by replacing the valve. Where the solenoid is only clogged with debris rather than electrically dead, it can be taken apart with hand tools, cleaned, and reused — forum members do this routinely because the OEM part is expensive. If replacement is warranted, the Nissan control valve assembly is the 14933-series solenoid; budget for aftermarket equivalents at a fraction of dealer price. Two practical warnings: soak the bracket bolts with penetrating oil a day ahead, because the captive hardware is usually rusted solid and snaps easily, and replace the short connecting hoses at the same time since they are cheap and are half the failures. After the repair, clear the code and drive a full EVAP-enabling cycle — roughly a quarter to three-quarter tank of fuel and a cold start followed by steady cruising — before assuming the fix took, since the monitor will not run and re-confirm the repair on a short trip.
Nissan North America, Inc. (Nissan) is recalling certain 2001-2003 Maxima, 2002-2006 Sentra, 2002-2004 Pathfinder, 2007-2011 Versa Sedan and Versa Hatchback, 2001-2004 Infiniti I30 and I35, 2002-2003 Inifiniti QX4, 2003-2008 Infiniti FX35 and FX45 and 2006-2010 M35 and M45 vehicles. The vehicles are equipped with non-desiccated, frontal passenger air bag inflators containing phase stabilized ammonium nitrate (PSAN) propellant that were used as interim remedy parts for previous Takata recalls. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.
Campaign #20V00800009/01/2020
AIR BAGS
Nissan North America, Inc. (Nissan) is recalling certain model year 2001-2003 Nissan Maxima, 2002-2004 Pathfinder, 2002-2006 Sentra, 2002-2003 Infiniti QX4 and I35, 2003 FX35 and FX45, and 2001 I30 vehicles. Upon deployment of the passenger side frontal air bag, excessive internal pressure may cause the inflator to rupture.
Campaign #15V28700015/05/2015
STEERING:COLUMN
NISSAN IS RECALLING CERTAIN MODEL YEAR 1996-2004 PATHFINDER AND MODEL YEAR 1997-2003 INFINITI QX4 VEHICLES ORIGINALLY SOLD, OR CURRENTLY REGISTERED IN, CONNECTICUT, DELAWARE, IOWA, ILLINOIS, INDIANA, MASSACHUSETTS, MAINE, MARYLAND, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WASHINGTON D.C., WEST VIRGINIA AND WISCONSIN. IN AREAS OF THE COUNTRY IN WHICH HEAVY CONCENTRATIONS OF ROAD SALT ARE USED, A MIXTURE OF SNOW/WATER AND SALT MAY ENTER AN ASSEMBLY LOCATION HOLE IN THE UPPER STRUT HOUSING, CAUSING WATER TO COLLECT AT THE MATING SURFACE OF THE STRUT HOUSING PANEL AND THE INNER HOOD LEDGE ASSEMBLY. OVER TIME, THIS
SNOW/WATER AND SALT INTRUSION MAY RESULT IN CORROSION OF THE STRUT TOWER HOUSING IN SOME SUBJECT VEHICLES.
Campaign #11V24400020/04/2011
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.
Campaign #09E01200007/04/2009
EXTERIOR LIGHTING
CERTAIN CK MOTORSPORTS COMBINATION HEADLIGHTS, CLEAR CORNER, BUMPER, AND SIDE MARKER LIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON THE PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.
What are the most common Nissan Pathfinder problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2000 Nissan Pathfinder has 1 documented issue. The documented issue is: Underbody EVAP Vacuum Cut Valve Bypass Solenoid Corrodes and Stops Switching. None are rated critical, but regular maintenance is recommended.
Is the Nissan Pathfinder reliable?
The 2000 Nissan Pathfinder has 1 known issue compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Nissan Pathfinder problems?
Repair costs for known Nissan Pathfinder issues range from $90 to $350, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 1998-2004 Nissan Pathfinder Underbody EVAP Vacuum Cut Valve Bypass Solenoid Corrodes and Stops Switching?
On R50-generation Pathfinders the EVAP vacuum cut valve and its bypass solenoid are not under the hood — they sit outside on a steel bracket beneath the floor pan, just behind the driver's-side rear spring and forward of the fuel tank. Forum diagnosis of this code repeatedly puts… 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.
