Parts for your 2019 Nissan Serena-Crank angle sensor

2019 Nissan Serena crank angle sensor — what it is, where it lives, and how to look after it

Based on technical sources, the 2019 Nissan Serena does use a crank angle sensor (Nissan typically calls it the Crankshaft Position Sensor, or POS). The Nissan Serena C27 service manual (Engine Control System, “Crankshaft Position Sensor [POS]”) describes the sensor’s role in detecting crank angle and engine speed for ignition and injection timing on both MR20DD and HR12DE e-POWER variants. Nissan’s electronic parts catalogue for the C27 also lists a crankshaft position sensor for these engines. Modern OBD-II/J-OBD vehicles require precise crankshaft tracking for misfire detection and timing control, which further supports its fitment.

On the 2019 Serena, the crank angle sensor is a little hero, quietly feeding the ECU exact crank angle and rpm so the engine can spark and inject at the right moment. Without it, the Serena won’t start, or it’ll stumble and stall. It reads a toothed reluctor on the crank, turning each passing tooth into a clean signal the ECU can trust.

As part of servicing of your 2019-nissan-serena crank-angle-sensor, there’s no fixed replacement interval, but a few smart checks keep it healthy:

• Inspect the sensor connector and harness routing under the bonnet and down near the transmission bellhousing for chafe, oil wicking, or corrosion.
• If there’s oil around the sensor boss, address any seepage so it doesn’t contaminate the connector.
• Use a scan tool to look for stored crank/cam correlation or misfire codes if there’s a rough idle, no-start, or random stalling.

Common clues the crank angle sensor is on the way out include extended cranking when hot, sudden cut-outs, erratic tacho readings, and a check engine light with CKP-related DTCs. Because intermittent faults are common, a heat-soak test (engine at operating temp, then restart) can be revealing.

When replacement is needed, it’s a straightforward remove-and-refit job for most techs. Disconnect the battery, unplug the sensor, swap it out, and tighten the single retaining fastener to factory torque. Don’t overtighten—the body can crack. Always fit a quality OEM-equivalent sensor and ensure the O-ring seats cleanly.

After installation, clear codes and perform any required relearn procedures with a scan tool (some Serena variants need a CKP/idle learn so the ECU can perfectly align timing again). A short road test with live data is a good idea to confirm a rock-steady rpm signal and happy starts—hot or cold. Look after the wiring, keep fluids where they belong, and the Serena’s crank angle sensor will usually run happily for hundreds of thousands of kilometres.

Popular questions

Where is the crank angle sensor on a 2019 Nissan Serena?

It’s typically mounted low on the engine block at the transmission side, reading a reluctor on the crankshaft. Access is from the engine bay or underneath, depending on tooling and the exact engine variant (MR20DD or HR12DE e-POWER).

Does the crank angle sensor need routine replacement?

No. It’s a non-service item. Replace only if it’s faulty or damaged. Regular inspections of the connector and harness during scheduled services help prevent issues.

What symptoms point to a failing crank angle sensor?

Hot no-start, sudden stalling, uneven idle, poor acceleration, and a check engine light with CKP-related codes. If these appear, a scan and basic wiring checks can quickly confirm the culprit.