Parts for your 2001 Nissan Bluebird-Throttle position sensors

2001 Nissan Bluebird throttle-position-sensors

Technical references including the Nissan factory service manuals for the 2000–2001 Bluebird/Bluebird Sylphy (U14/G10 platforms with SR20DE and QG18DE engines), the Nissan FAST parts catalogue, and Autodata confirm that the 2001 Nissan Bluebird is fitted with a throttle-position-sensor (TPS) on the throttle body. On cable-throttle versions it’s a combined closed-throttle switch and sensor, on variants with electronic throttle control, dual throttle-position-sensors are integrated for redundancy. So throttle-position-sensors are absolutely relevant to this model.

On a 2001 Bluebird, the throttle-position-sensor tells the engine control unit exactly how far the throttle plate is opened. That signal is used to fine‑tune fuel delivery, ignition timing and idle speed, and it even influences automatic transmission shift behaviour. Get a clean, smooth TPS signal and the car feels crisp and predictable, get a flaky one and it can hesitate, hunt at idle or chew through petrol.

As part of routine servicing, it’s smart to give the throttle body and TPS some attention. Under the bonnet, inspect the TPS connector for greenish corrosion or loose pins, and make sure the wiring loom isn’t rubbing on anything sharp. A careful throttle body clean (throttle-safe cleaner only) can prevent sticky plates that throw the TPS reading off. With a scan tool, watch the throttle percentage rise smoothly from closed to wide open with no drop-outs. If using a multimeter on cable-throttle cars, expect roughly 0.4–0.6 V at closed throttle rising steadily to about 4.0–4.5 V at wide open, check your specific engine’s FSM spec.

• Common signs of TPS trouble: flat spots on take-off, erratic idle, poor fuel economy, harsh or late shifts (auto), and a check engine light (codes like P0120–P0123, P0220).
• Replacement tips: use a quality OEM-equivalent sensor, mark the original position, and don’t over-tighten the small mounting screws.
• Calibration/relearn: after fitting, perform throttle closed-position and idle/air volume learning. This can be done with a capable scan tool, some engines allow a pedal procedure. Follow the Nissan FSM steps.

There’s no set replacement interval for throttle-position-sensors, they’re replaced on condition. If the sweep isn’t smooth, the resistance track is worn, or relearn won’t stabilise the idle, it’s time. A well-fitted, correctly learned TPS brings the Bluebird back to its easy-going, reliable best on Kiwi and Aussie roads.

FAQs

Where is the throttle-position-sensor on a 2001 Nissan Bluebird?
It’s mounted on the throttle body. On cable-throttle SR/QG engines it sits on the side of the throttle shaft with a two- or three-bolt flange and a keyed spindle. On variants with electronic throttle, the TPS elements are integrated into the throttle body assembly, sometimes as dual sensors for safety.

Does a new TPS need calibration or relearning?
Yes. After replacement, the ECU needs to know the exact closed and open positions. Perform throttle closed-position learning and idle/air volume learning using a scan tool or the approved pedal sequence (if supported). Skipping this can leave the idle high or unstable.

What fault codes point to a TPS issue on a 2001 Bluebird?
Typical codes include P0120–P0123 (TPS circuit range/performance/high/low) and P0220 series on dual-sensor setups. If these appear with symptoms like hesitation or harsh shifts, check the connector, wiring and sensor sweep before condemning other parts.