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Parts for your 2000 Nissan Pathfinder-Throttle position sensors
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2000 Nissan Pathfinder throttle position sensor (TPS)
Yes, the 2000 Nissan Pathfinder (R50 chassis with the VG33E 3.3‑litre V6) is fitted with a throttle position sensor. This is detailed in the Nissan Factory Service Manual for the R50 (Engine Control, “Throttle Position Sensor”), which also lists related OBD‑II fault codes (P0120–P0124) and an adjustment/check procedure. The Automatic Transmission section references the TPS signal for shift control on auto models. The part is also shown in Nissan parts catalogues for the 2000 R50 throttle body assembly and covered in common service references such as Haynes/Autodata for 1998–2004 Pathfinder/Frontier/Xterra. So, it’s absolutely relevant on this model.
On this Pathfinder, the TPS lives on the side of the throttle body and tells the engine control unit exactly how far the driver’s got their foot in. That signal is used to trim fuel and ignition, smooth out tip‑in, manage idle quality, and on autos, tidy up shift timing. A crook TPS can make the car feel doughy off the mark, surge, hunt at idle, chew through fuel, or bang into gears. It’ll often light the MIL with codes like P0120 or P0122.
It’s not a regular replacement item, but it’s smart to check it during servicing—especially if the odometer’s into six figures or the throttle body’s being cleaned. Keep solvent away from the sensor, and give the connector a once‑over for green crusties or loose pins. If the unit’s been removed or replaced, it needs a quick setup: align the sensor on the throttle shaft, snug the two screws, then set closed‑throttle output to spec with a multimeter (Nissan’s FSM targets about 0.45–0.55 V at closed throttle, rising smoothly to ~4 V at wide open). On this engine the TPS assembly includes an idle switch, confirm the switch shows continuity at closed throttle and opens as the plate moves. Don’t touch the factory throttle stop screw—adjust the sensor, not the stop.
Replacement is straightforward under the bonnet with basic hand tools:
- Disconnect the battery negative (good practice when working on sensors).
- Unplug the TPS, mark its current position, remove the two screws and lift it off.
- Fit the new unit, align the tang with the throttle shaft, rotate to set voltage/idle switch per the FSM, then tighten the screws.
- Clear any fault codes and perform an idle learn if needed. A short road test should feel smooth with clean, linear throttle response and tidy shifts.
Common signs it’s on the way out:
- Flat spots, hesitation, or surging
- Unstable or high idle, poor economy
- Harsh/odd shifts on autos
- Check Engine Light with TPS‑related codes
Does a 2000 Pathfinder have a TPS and where is it?
It does. It’s mounted on the throttle body on the intake plenum, facing the front‑left of the engine bay on the VG33E. The Nissan R50 FSM shows the TPS as part of the throttle body assembly and provides test specs and a pinout for checks with a multimeter.
What symptoms point to a failing TPS on this model?
Hesitation off idle, random surging, hunting idle, poor fuel use, and on autos, abrupt or late shifts. A scan tool will often show TPS percentage jumping about, and the ECU may log P0120, P0122, P0123, or P0124. If live data isn’t smooth from closed to wide open throttle, the sensor or its wiring needs attention.
Can it be driven with a bad TPS?
It’ll usually run, but it’s not a great idea. The ECU may default to rich/limp strategies, which can foul plugs and cook fuel economy, and autos can shift harshly. Fixing it early saves headaches and keeps it driving nicely.
