Parts for your 2010 Nissan Serena-Throttle position sensors

2010 Nissan Serena throttle position sensor (TPS)

Based on technical sources including the Nissan Serena C25/C26 factory service manual (EC section) and Nissan FAST parts catalog, the 2010 Nissan Serena uses an electronic throttle body with an integrated, dual-track throttle position sensor. It’s part of the throttle actuator control assembly and isn’t serviced separately from the throttle body. That means if the TPS fails, the fix is to replace the complete throttle body assembly and carry out the required throttle/idle relearn.

The TPS tells the engine control module exactly how far the throttle plate is open. On the Serena’s drive-by-wire setup (common on MR20DE-powered models seen in AU/NZ and JDM imports), the ECU pairs TPS feedback with the accelerator pedal position (APP) sensor to deliver smooth, safe control of engine torque.

• Optimises fuelling and ignition for crisp response and good economy
• Manages idle speed and air-con load compensation
• Coordinates transmission shift timing and torque reduction
• Supports cruise control and stability/traction systems

There’s no routine replacement interval for the TPS, but the throttle body deserves periodic attention. A light clean of the throttle bore and plate every 60,000–100,000 kilometres (or when idle is rough) helps keep readings stable. Use a throttle-body-safe cleaner, keep liquid away from the actuator/motor housing, and never force the plate open—use the linkage only. After cleaning or a flat battery, perform a throttle closed-position and idle air volume learn, a capable scan tool is easiest, but the Nissan manual pedal procedure can also work.

Symptoms that point to TPS or throttle body issues include erratic idle, flat spots, sudden limp mode, poor fuel use, and fault codes such as P0120/P0121/P0122/P0123, P0220, P2101–P2103, or P2135. Because the Serena’s TPS is built in, replacement means fitting a new or quality remanufactured throttle body, installing a fresh gasket, torquing evenly, checking the harness/earths, and completing the relearn. If symptoms persist, test the APP sensor and inspect for intake leaks.

A well-maintained throttle body keeps the Serena driving smoothly around town and on long family trips. Keep the intake clean, fix vacuum leaks promptly, and use good fuel—small habits that save big hassles later.

Does the 2010 Serena have a separate TPS I can swap?

No. The TPS is integrated into the electronic throttle body. If the sensor fails, replace the throttle body assembly and carry out the relearn procedures.

What fault codes suggest a TPS/throttle body problem on a 2010 Serena?

Common ones include P0120–P0124, P0220, P2101–P2103, and P2135. You may also see idle control or airflow correlation codes after cleaning if a relearn wasn’t completed.

Do I need to do a relearn after cleaning or replacing the throttle body?

Yes. Perform the throttle closed-position learn and idle air volume learn. A scan tool is simplest, but the Nissan manual sequence can be used. Skipping this step can leave an unstable idle or limp mode.