Parts for your 2016 Nissan Serena-Throttle position sensors

2016 Nissan Serena throttle-position-sensors

Technical service literature confirms the 2016 Nissan Serena does use throttle-position-sensors. In the Nissan Factory Service Manual for the C26-series Serena (Engine Control – Throttle Control System), the throttle control actuator (electronic throttle body) contains two built-in throttle position sensors (often called TPS1/TPS2) that report throttle plate angle to the ECM. Nissan’s FAST parts catalogue for the C26 with MR20-series engines lists the throttle body assembly with integrated sensors (the sensors aren’t sold separately). Diagnostic information in Nissan CONSULT-III Plus procedures and the ECM DTC list (codes such as P0121, P0122, P0123, P2135) further references the TPS signals on this model. So, throttle-position-sensors are absolutely relevant on a 2016 Nissan Serena.

On a 2016 Serena, the throttle-position-sensors live inside the electronic throttle body and constantly tell the engine computer exactly how far the throttle plate is open. Paired with the accelerator pedal position sensor, they let the ECM blend driver demand with engine load for smooth take-offs, steady cruising, and cleaner emissions. If the readings don’t match or wander, the ECM can drop the van into limp mode to protect the engine and driveline.

Because the TPS is integrated, it’s not a separate bolt-on part. If the sensor fails or the signals disagree, the fix is typically a complete throttle body replacement. After fitting, a throttle valve closed-position learning and idle air volume learning procedure with a scan tool (CONSULT or equivalent) is required. Skipping this step can leave the idle high, hunting, or cause sluggish throttle response.

As part of routine servicing, it’s smart to:

• Scan for stored or pending codes like P0121/P2135 and check live data for TPS1/TPS2 agreement.
• Inspect and clean the throttle bore and plate with throttle-body-safe cleaner if deposits are visible (battery disconnected, plate moved gently by hand only if the procedure allows).
• Check the throttle body and engine earths, poor grounds can mimic sensor faults.
• Ensure the battery and charging system are healthy, low voltage can trigger throttle faults.

Common clues the TPS/throttle body needs attention include erratic idle, flat spots, sudden loss of power, cruise control dropping out, or the MIL illuminating. If replacement is needed, use a quality OEM-equivalent throttle body, fit a new gasket, and avoid overtightening. After installation, complete the relearn procedures and confirm both TPS tracks rise and fall smoothly and in sync. Most workshops will knock this over in under two hours, and it’s a good opportunity to check the intake ducting and air filter so the Serena keeps pulling strongly and sipping fuel on long Kiwi and Aussie kilometres.

Does the 2016 Nissan Serena have a separate, replaceable TPS?

No. On this model the TPS is integrated into the electronic throttle body. If the sensor fails, the usual remedy is replacing the entire throttle body assembly, then performing throttle/idle relearn.

What symptoms point to a failing TPS on a 2016 Serena?

Expect erratic idle, hesitation, limp mode, poor fuel economy, or codes like P0121 or P2135. Throttle data that doesn’t track smoothly on a scan tool is another giveaway.

Is any special setup needed after throttle body replacement?

Yes. A throttle valve closed-position learning and idle air volume learning must be carried out with a capable scan tool. This ensures stable idle and correct throttle response.