Parts for your 2014 Nissan Navara-Throttle position sensors

2014 Nissan Navara throttle position sensors (TPS)

Based on technical references – including the Nissan Navara D40 Engine Control (EC) service manual sections for YD25DDTi and QR25DE engines, Nissan CONSULT procedures for Throttle Valve Closed Position and Idle Air Volume Learning, and common Bosch EDC16/EDC17 diesel control documentation – the 2014 Nissan Navara does use a throttle position sensor. It’s not a separate old‑school potentiometer on a cable throttle, it’s built into the electronic throttle body (petrol) or the throttle control valve used for EGR/shut‑down management (diesel). Many workshop guides (e.g., Gregory’s/Haynes for Navara/Pathfinder 2005–2014) describe the TPS as integral to the throttle actuator assembly.

On a 2014 Navara, the TPS tells the engine computer exactly where the throttle plate sits. In the petrol QR25DE, it works with the electronic throttle motor to deliver smooth response and proper idle. In the YD25DDTi diesel, the “throttle” isn’t for power like a petrol, it’s there to manage EGR flow and ensure a soft, no‑shake engine shut‑down. Either way, the TPS is the ECU’s eyes on the throttle plate position under the bonnet.

As part of routine servicing, it’s smart to check the throttle body/valve and its connector. For diesels, soot can gum up the throttle plate and skew the TPS reading, a careful clean of the bore and plate every 60–80,000 kilometres helps. On petrol models, light deposits can also affect idle quality. Use throttle‑safe cleaner, don’t force the butterfly by hand, and refit any gasket or O‑ring properly.

If the TPS or throttle unit has been removed or replaced, a relearn is often needed so the ECU knows the true closed position. Workshops typically use CONSULT or an equivalent scan tool to perform Throttle Valve Closed Position Learning and, where applicable, Idle Air Volume Learning. Low battery voltage can upset these procedures, so a healthy battery or a support charger is a good shout.

• Common signs it’s playing up:
  • Sluggish or jumpy throttle response, poor fuel economy
  • Uneven idle, stalling on start or a rough shut‑down (diesel)
  • Limp mode or engine light with codes like P0120–P0124/P0220 range/track faults
• Quick checks under the bonnet:
  • Inspect the throttle/valve plug for moisture, oil, or heat damage
  • Verify grounds and battery condition before condemning the sensor
  • After cleaning or replacement, carry out the proper relearn with a scan tool

Replacement generally means swapping the complete throttle body/valve assembly because the TPS is integrated. Use quality parts, keep the mating surfaces clean, and don’t skip the relearn – that’s what gets the Navara idling sweet and driving right.

Popular questions about 2014 Nissan Navara throttle position sensors

Does a 2014 Navara diesel actually have a TPS?
Yes. While diesels don’t use a throttle for power control, the YD25DDTi uses an electronic throttle/air control valve for EGR and smooth shut‑down. Its position sensor is read by the ECU just like a traditional TPS, and it’s part of the same assembly.

Do I need to calibrate anything after replacing or cleaning the throttle body?
Usually, yes. A throttle closed‑position and, where required, idle learn should be performed with a suitable scan tool. Skipping this step can leave the ute with a high or unstable idle, poor response, or a lingering fault code.

What are the go‑to servicing tips for the Navara’s TPS/throttle unit?
Keep the connector clean and clipped, check for harness chafing near the EGR/throttle area, clean soot from diesel throttle plates periodically, and avoid forcing the plate by hand. After work is done, do the relearn and clear any stored fault codes.