Parts for your 2009 Nissan Dualis-Camshaft sensor

2009 Nissan Dualis camshaft sensor — purpose, care and replacement

Yes, the 2009 Nissan Dualis (J10) uses a camshaft position sensor. Technical sources confirming fitment include the Nissan J10 Series Service Manual (EC section, Camshaft Position Sensor [PHASE]), Nissan FAST/parts catalogue listings (e.g., cam sensor p/n commonly referenced for MR20DE petrol), and mainstream service data and aftermarket catalogues (Autodata, Bosch, NTK) that all specify a camshaft sensor for the MR20DE 2.0‑litre petrol and the common diesel variants used in this model year.

On this Dualis, the camshaft sensor keeps the engine management in sync by telling the ECU exactly where the intake cam is in its rotation. That timing signal lets the ECU fire the injectors sequentially, manage ignition timing, and control the variable valve timing system so it pulls smoothly, starts cleanly and sips fuel the way it should. If the signal goes missing or drifts, the ECU can fall back to a guess-and-go strategy using the crank sensor, which usually means hard starting, rough idle, flat spots and a glowing check engine light (often codes like P0340/P0345).

• Common symptoms: long crank or no start when hot, uneven idle, hesitant acceleration, poorer fuel economy, and intermittent stalling.
• Usual causes: internal sensor failure, heat-soaked electronics, oil contamination inside the connector, or a rubbed/oxidised harness near the cam cover.

There’s no scheduled replacement interval for the camshaft sensor on a 2009 Dualis, so it’s generally a “replace on fault” part. As part of regular servicing, it’s smart to do a quick visual under the bonnet: check the sensor’s connector at the cylinder head (timing chain end on the MR20DE), make sure the wiring isn’t chafed, and that there’s no oil weeping into the plug. Keeping the connector clean and seated firmly can prevent heaps of intermittent grief.

1. If replacement is needed, switch the ignition off and let the engine cool.
2. Unclip the electrical connector and remove the single retaining bolt.
3. Twist and withdraw the sensor, wipe the bore, lightly oil the O‑ring on the new unit, and refit.
4. Reattach the connector, clear fault codes, and road test. A short idle run helps the ECU relearn cam/crank correlation.

Go for a quality OEM or reputable brand sensor, cheapies can introduce jitter in the signal and bring the light back on. If faults persist, rule out wiring and the crankshaft sensor before blaming the ECU. For exact bolt torque and diagnostic flow, consult the Nissan J10 Service Manual used by Aussie and Kiwi workshops.

Does a 2009 Nissan Dualis have one or two camshaft sensors?

Most 2009 Dualis models with the MR20DE petrol use a single camshaft position sensor on the intake cam (Nissan calls it the PHASE sensor). Diesel variants also typically use one. Always check the engine code and service data for your specific vehicle to be sure.

Is it safe to keep driving with a faulty camshaft sensor?

It’ll often run, but starting can be hit‑and‑miss and stalling can happen at awkward times. Short trips to the workshop are usually fine, but for safety and to avoid catalyst damage from misfires, it’s best to fix it sooner rather than later.

Will a bad camshaft sensor damage the engine?

The sensor itself won’t hurt the engine, but the poor running it causes can. Extended misfiring and rich running can overheat the catalytic converter and foul plugs. Sorting the sensor and any wiring issues early is the smart move.