Parts for your 2006 Nissan Primera-Throttle position sensors

2006 Nissan Primera throttle position sensors — what they do and when to service them

According to Nissan’s factory Electronic Service Manual for the P12-series Primera (EC engine control section) and the Hitachi electronic throttle body specifications used on QG/QR petrol engines, the 2006 Nissan Primera does use a throttle position sensor. It’s not a separate, bolt-on switch like older cable throttles, it’s an integral dual-track sensor built into the electronic throttle control actuator (the throttle body) that the ECU monitors alongside the accelerator pedal position sensor. Related OBD-II fault coverage includes TPS circuit range/performance codes such as P0120–P0123 and P0220–P0223 noted in Nissan diagnostic charts. So yes — a TPS is absolutely relevant on a 2006 Primera, and it lives inside the throttle body assembly.

On this model, the throttle position sensors tell the ECU exactly where the throttle plate sits, so the engine can manage idle stability, acceleration, fuel economy and emissions. Because it’s a drive-by-wire setup, accurate TPS feedback is critical for smooth take-off and steady cruising. When the signals drift or go noisy, drivers may notice rough idle, a laggy pedal, cruise control dropouts, or the MIL glowing with those TPS-related codes.

As part of normal servicing, the TPS isn’t a standalone maintenance item — it’s sealed within the throttle body. However, a few smart checks help keep it happy:

• Scan for fault codes and live data. Look for dual-track agreement and a smooth 0–100% sweep with no spikes.
• Inspect the harness and connectors under the bonnet for corrosion, moisture ingress or stretched wiring near the throttle body.
• If cleaning the throttle plate for carbon build-up, don’t drown the shaft area, use throttle-safe cleaner sparingly and avoid forcing the blade open.
• After battery disconnect, throttle body replacement or a thorough clean, perform Nissan’s throttle closed-position and idle air volume learning with a scan tool (or the published pedal/ignition procedure). Skipping relearn often causes high or hunting idle.

When a TPS fault is confirmed, most 2006 Primeras require replacing the entire throttle body assembly rather than just the sensor. Use quality OE or reputable aftermarket units, fit a fresh gasket, torque evenly, and carry out the relearn. For diesels, follow the specific ESM steps for air and idle management. With good diagnostics and a careful install, the car will feel perkier and more predictable, saving fuel across those Kiwi and Aussie kilometres.

Popular questions about 2006 Nissan Primera throttle position sensors

Does the 2006 Primera actually have a TPS, or is it just the pedal sensor?
It has both. The accelerator pedal sensor tells the ECU what the driver wants, and the throttle position sensors inside the throttle body report what the throttle plate is actually doing. The ECU constantly cross-checks them.

What are the common signs the TPS is playing up on a 2006 Primera?
Expect a check engine light with codes like P0120–P0123/P0220–P0223, erratic or high idle, flat spots on acceleration, cruise control cutting out, or sudden limp mode. Live-data traces that don’t sweep smoothly are a giveaway.

Can the TPS be replaced on its own, or does the whole throttle body need swapping?
On most petrol 2006 Primeras, the TPS is part of the throttle body and isn’t serviced separately. If the sensor tracks are worn or out of range, replace the throttle body, then run the throttle/idle relearn so it behaves properly.