Parts for your 2011 Nissan Serena-Throttle position sensors

2011 Nissan Serena throttle-position-sensors (TPS)

Technical sources confirm the 2011 Nissan Serena uses throttle-position-sensors. The Nissan Serena C26 Service Manual (EC – Engine Control) specifies an electronic throttle body with dual throttle position sensors (TPS1 and TPS2) built into the throttle actuator, alongside an accelerator pedal position sensor. Nissan’s FAST parts catalogue for the C26 shows the TPS integrated with the throttle body assembly, not as a separate, serviceable sensor. This matches common drive-by-wire designs described in OEM technical literature from Nissan and industry references on electronic throttle control.

On the 2011 Serena (MR20DE and market variants of MR20DD), the throttle-position-sensors monitor the angle of the throttle plate so the engine control module can manage air flow, fuel delivery, ignition timing, idle speed and cruise functions. Because it’s a drive-by-wire setup, the ECU constantly cross-checks the dual TPS signals with the accelerator pedal position to keep things safe and smooth. If the readings don’t align, it will drop into limp mode to protect the engine and drivetrain.

Typical signs the TPS/throttle body assembly is having a moment include a rough or hunting idle, flat spots, surging, poor fuel economy, or the Serena suddenly going into reduced-power mode. Common fault codes include P0120–P0123, P0220 and P2135. On this model the TPS is part of the throttle body, so if the sensor itself fails, the usual fix is replacing the entire throttle body assembly.

Good servicing habits go a long way. Every 60–100,000 kilometres, consider a careful throttle body clean with a suitable cleaner (no harsh scraping), check the electrical connector for corrosion or loose pins, and make sure grounds and battery voltage are healthy. Never force the throttle plate open by hand—let the actuator do its job. After cleaning or replacement, carry out the throttle valve closed position and idle air volume learning procedures with a scan tool (or the manufacturer-approved manual method). Skipping this relearn can leave the idle high, low, or unstable. When fitting a new unit, use a new gasket if required, torque fasteners correctly, and check for vacuum leaks once it’s back together. Quality parts matter here, a genuine or high-grade aftermarket throttle body that meets OE specs will save headaches. With proper care and the correct relearn steps, the Serena’s drive-by-wire throttle should deliver smooth take-offs and reliable day-to-day running.

• Common clues: erratic idle, limp mode, surging, poor economy, TPS-related fault codes
• Service tips: gentle cleaning, connector checks, no forcing the plate, always perform relearn

FAQs

Does the 2011 Nissan Serena have a throttle position sensor?
Yes. The C26 Serena’s electronic throttle body contains dual throttle position sensors. They feed the ECU precise throttle angle data and are cross-checked against the accelerator pedal position for redundancy and safety.

Can the TPS be replaced separately on a 2011 Serena?
Typically, no. On this model the TPS is integrated into the throttle body assembly. If the sensor is faulty, the practical repair is to replace the whole throttle body, then perform the required relearn procedures.

Is a throttle body relearn needed after cleaning or replacement?
Absolutely. Any cleaning that meaningfully alters the throttle plate position, and all throttle body replacements, should be followed by throttle closed position and idle air volume learning. Without it, idle quality and drivability can suffer.