Parts for your 2007 Nissan X-trail-Throttle position sensors

2007 Nissan X‑Trail throttle position sensors (TPS)

Per Nissan factory service manuals for both late T30 and early T31 X‑Trail models (EC section: Electric Throttle Control System) and Nissan’s electronic parts catalogue, the 2007 Nissan X‑Trail does use throttle position sensors. They’re part of the electronic throttle body (drive‑by‑wire) and provide dual, redundant feedback to the engine control module. That applies whether the vehicle runs the QR25DE or MR20DE petrol, or the diesel variants offered in this model year.

On this X‑Trail, the TPS tracks the angle of the throttle plate so the ECU knows exactly how much air the engine’s getting. That lets it tidy up fuelling, ignition timing and idle control, and it also feeds into cruise control, traction/ESP logic and, where applicable, auto transmission shift strategy. Because it’s a drive‑by‑wire setup, there are usually two TPS circuits built into the throttle body for safety, plus a separate accelerator pedal position sensor on the pedal.

As part of regular servicing, the TPS itself isn’t a wear item, but it does live on the throttle body where grime and oil vapour can build up. A sensible approach is:

• Inspect connectors and loom for corrosion or chafing at major services (look for green crust on pins, brittle insulation).
• Clean the throttle body bore and plate every 60–100,000 km with throttle‑safe cleaner. Don’t drown the shaft area, avoid forcing the plate by hand.
• After cleaning or replacing the throttle body/TPS, carry out the throttle closed‑position learn and idle air volume learn. Many variants can do this with a capable scan tool, some allow a pedal/key “timed” procedure. Skipping this can leave a high or unstable idle.

Typical warning signs of TPS or throttle body issues are rough idle, flat spots on take‑off, erratic revs, cruise dropping out, or limp‑home. Common fault codes include P0121–P0123 and P2135. Before throwing parts at it, rule out intake air leaks and check battery/charging health—low system voltage plays havoc with throttle electronics.

If replacement is needed, note that on most 2007 X‑Trail engines the TPS is integrated into the electronic throttle body and isn’t serviced separately. Fit a quality throttle body assembly with a new gasket, torque the fasteners evenly, then perform the required relearn procedures. Where a standalone TPS is fitted (some early builds/markets), it’s non‑adjustable—install and confirm readings with live data rather than trying to “set” it by ear. A quick road test and scan for pending codes rounds out the job under the bonnet.

Popular questions

Does a 2007 X‑Trail have a separate TPS, or is it built into the throttle body?

Most 2007 X‑Trail engines use an electronic throttle body with the TPS built in, along with a separate accelerator pedal position sensor. In those cases, you replace the whole throttle body if the TPS fails. Some early builds/markets may show a serviceable TPS, but it’s far less common.

What are the signs a TPS is failing on a 2007 X‑Trail?

Look for hesitation, surging at steady speed, a hunting or high idle, cruise control cutting out, and the MIL on. Scan tool codes like P0121–P0123 or P2135 are frequent. Always inspect wiring and clean the throttle body before condemning the sensor.

Do relearn procedures need to be done after cleaning or replacing the throttle body?

Yes. After cleaning or replacement, perform the throttle closed‑position learn and idle air volume learn. A good scan tool makes this quick, some variants allow a timed pedal/key method. Skipping this step can leave the idle unstable or too high.