Parts for your 2013 Nissan Serena-Crank angle sensor

2013 Nissan Serena crank-angle-sensor: what it does and when to sort it

Based on Nissan’s C26 Serena factory service information (EC – Engine Control System for the MR20DE) and common MR-series engine documentation, the 2013 Nissan Serena is fitted with a crank-angle-sensor (crankshaft position sensor, often labelled POS by Nissan). It’s a primary input for ignition timing, fuel injection timing, and engine start control, so it’s absolutely relevant on this model.

On the Serena’s 2.0‑litre MR20DE (including S-HYBRID variants), the crank-angle-sensor sits low on the bellhousing area, reading a toothed signal plate on the crank. The ECU uses that signal to know exactly where the pistons are, to fire the coils and injectors at the right moment, and to manage idle-stop restarts smoothly. If this sensor goes out of whack, expect hard starting, intermittent stalling, rough running, or the engine not starting at all.

Good news: the sensor isn’t a periodic replacement item. It’s serviced on condition. During routine servicing, a quick visual check is wise—look for oil contamination, damaged wiring, or a loose connector. On high‑kilometre cars, heat and vibration can make the harness brittle, so a gentle wiggle test and contact cleaner on the plug can prevent grief later on.

• Typical symptoms of a failing sensor: long crank/no start, sudden stall with no restart until cool, misfire under load, or erratic tach signal.
• Scan tool clues: stored crank sensor/correlation DTCs, or zero rpm while cranking.

Replacement is straightforward for a competent tech: disconnect the battery, unplug the sensor, remove the retaining bolt, ease the sensor out, fit the new one with a clean O‑ring, and torque the bolt to spec. The air gap isn’t adjustable—just make sure the mounting face is clean and the correct part number is used for the C26. After installation, clear fault codes and perform a short road test. On some cars, a quick idle/ECU self‑learning via a capable scan tool (Nissan CONSULT or equivalent) helps stabilise idle and restart behaviour.

Quality matters here. Cheap pattern sensors can cause phantom faults or hot‑start issues. Going with a reputable brand or genuine part, and inspecting the harness routing away from exhaust heat, will keep the Serena happy for many more kilometres.

Popular questions about the 2013 Nissan Serena crank-angle-sensor

Does the 2013 Serena use a different sensor for S‑HYBRID models?

S‑HYBRID variants still rely on the same fundamental crank-angle-sensor signal for timing and restart control. Part numbers may vary by build date, but function and location are essentially the same. Always match by VIN to be sure.

Can a bad crank-angle-sensor damage the engine?

It’s unlikely to cause mechanical damage by itself. However, it can trigger poor running or stalling that’s unsafe in traffic. Leaving it unresolved can also mask other issues and lead to unnecessary parts swapping. Prompt diagnosis and replacement is the go.

Do I need a relearn after replacing the sensor?

Often the ECU will adapt after codes are cleared and a short drive cycle. Some workshops perform an idle and timing relearn using a scan tool to speed things up and ensure crisp restarts, especially on vehicles that have had multiple related components replaced.