Parts for your 2012 Nissan Dualis-Crank angle sensor

2012 Nissan Dualis crank-angle sensor: what it does and how to look after it

Yes, this model uses a crank-angle sensor. Technical sources including the Nissan J10 Factory Service Manual (Engine Control, “CKP sensor (POS)”), the Nissan FAST parts catalogue (typical part numbers in this family include 23731-EN20A/EN21A), and mainstream workshop databases confirm the 2012 Nissan Dualis (J10, commonly with the MR20DE 2.0L petrol engine) is fitted with a crankshaft position sensor—often called a crank-angle sensor in aftermarket circles.

On the 2012 Dualis, the crank-angle sensor feeds the ECU the exact crank position and engine speed, so the car can fire the spark and inject fuel at the right moment. It works in tandem with the camshaft sensor to nail timing and smooth running from cold idle to highway cruising. It’s a magnetic/Hall-effect pickup reading a toothed target on the crank, usually mounted low at the back of the engine on the gearbox bellhousing.

This isn’t a routine “service item”, but a healthy sensor is crucial. When they go off, they can cause intermittent stalling, hard starting, misfires, rough idle, or a dead no-start. The ECU often logs faults such as P0335 if the signal drops out. Before replacing, it’s smart to inspect the connector and loom for oil intrusion, corrosion, or a bruised wire—especially where the harness passes near the bellhousing.

Replacement is straightforward for a competent home mechanic. Disconnect the battery, raise the vehicle safely, locate the sensor (one small retaining bolt), unplug, swap the O-ring if supplied, and install the new unit snugly—don’t overtighten. Clear fault codes and perform a brief road test. Many shops will also run a quick idle/trim relearn with a scan tool after battery disconnect to keep it sweet.

• Common symptoms: long crank, random stall, tach drop-out, poor fuel economy, stored P0335/P0339.
• Good practice: keep the area clean and dry, fix any oil leaks that could wick into the plug, and use quality OEM-equivalent sensors.
• When to replace: on confirmed faults or signal dropout—there’s no set kilometre interval.

For the 2012 Dualis owner who wants fuss-free motoring, treating the crank-angle sensor and its wiring with a bit of respect pays off—spot issues early, and replacement is quick, affordable, and restores rock-solid reliability.

Is a crank-angle sensor the same as a crankshaft position sensor on a 2012 Dualis?

Yes. Nissan’s factory literature calls it the CKP sensor (POS), while many parts catalogues and techs refer to it as a crank-angle sensor. Same part, same job—reporting crank position and speed to the ECU for precise ignition and fuel timing.

Where is the crank-angle sensor located on the 2012 Nissan Dualis?

It’s typically mounted low on the engine, facing the flywheel/flexplate at the gearbox bellhousing. Access is usually from underneath. Look for a small two-pin (or three-pin) sensor held in with a single bolt and a sealed O-ring, with the harness routed along the back of the engine.

Do these sensors need regular servicing or calibration?

No scheduled servicing is required. Replace only if faulty. After replacement or a battery disconnect, a quick code clear and a brief drive cycle will usually do. Some workshops may run an idle/learn procedure with a scan tool for best results, but it’s not a big drama on most Dualis setups.