Parts for your 2007 Nissan Serena-Throttle position sensors

2007 Nissan Serena throttle position sensor: what it does and how to look after it

Based on the Nissan Serena C25 Factory Service Manual (Engine Control, MR20DE) and common service info from Autodata/ALLDATA and Nissan CONSULT procedures, the 2007 Nissan Serena does use a throttle position sensor. It’s built into the electronic throttle control actuator (the throttle body) and isn’t a separate, adjustable sensor. That’s why replacement typically means swapping the complete throttle body assembly rather than a standalone TPS.

On this Serena, the throttle position sensor (TPS) tells the engine computer exactly where the throttle plate sits, so fuelling, ignition timing and idle control stay tidy. Working alongside the accelerator pedal position sensor, the TPS helps deliver smooth take-off, decent economy and proper emissions. The unit has twin signal tracks for redundancy, so if one reading goes walkabout, the ECU can fall back to a safe strategy rather than leaving the driver stranded.

There’s no set replacement interval for the TPS on a 2007 Serena, but during regular servicing it pays to:

• Inspect the throttle body and intake for carbon build-up and oil mist.
• Avoid forcing the throttle plate by hand, it can damage the motor and sensors.
• If cleaning is needed, use throttle-body-safe cleaner sparingly and keep solvent away from the motor housing and electronics.
• Check the connector and loom for corrosion or chafing, especially if the vehicle has seen a few Kiwi or Aussie coastal kilometres.

Common symptoms of a crook or confused TPS on a Serena include erratic idle, hesitation, poor fuel economy, stalling at lights, or the car dropping into limp mode. Fault codes may include P0120–P0123, P0220–P0223, or P2135. If a careful clean and wiring check don’t sort it, the fix is usually a new throttle body with gasket. After refitting or any significant cleaning, a throttle relearn is essential — perform throttle valve closed position and idle air volume learning with a suitable scan tool (CONSULT or equivalent) or the approved accelerator-pedal procedure. Skipping this can leave the idle high, low, or hunting.

As a rule of thumb, have the throttle body inspected every 20–30,000 km when the air filter’s checked. Keeping the intake clean and the battery/charging system healthy goes a long way to keeping the TPS happy on a 2007 Nissan Serena.

Popular questions

Does a 2007 Nissan Serena have a separate TPS I can replace on its own?
No — on the C25 Serena the TPS is integrated into the electronic throttle control actuator. If the sensor fails, the usual repair is to replace the entire throttle body assembly and then carry out the throttle/idle relearn.

What are the signs the TPS is playing up on a Serena?
Tell-tales include rough or hunting idle, sluggish response, stalling, poor fuel economy, or limp mode. The check engine light may show codes like P0120–P0123 or P2135. Always rule out wiring issues and throttle body carbon before committing to a new unit.

Do I need to calibrate the throttle after cleaning or replacing it?
Yes. The Serena requires throttle valve closed position and idle air volume learning after cleaning, battery disconnect, or throttle body replacement. Without relearn, the idle can be unstable and the ECU may log new faults.