Parts for your 2015 Nissan Pathfinder-Crank angle sensor

2015 Nissan Pathfinder crank-angle sensor (crankshaft position sensor)

For the 2015 Nissan Pathfinder (R52) the crank-angle sensor—more commonly called the crankshaft position (CKP) sensor—is absolutely fitted and relevant. Technical coverage in the Nissan Factory Service Manual (FSM) for the 2015 Pathfinder (EC – Engine Control System) details the CKP sensor as a primary engine management input. Nissan’s electronic parts catalogue also lists the CKP under base part code 23731 for this model year, and the OBD-II diagnostic set for the Pathfinder includes CKP-related fault codes (P0335–P0339). Put simply: this Pathfinder needs a working crank-angle sensor to run properly.

What does it do? The CKP sensor continually reports the crankshaft’s exact angle and rotational speed to the engine control module (ECM). That data is the heartbeat of the VQ35DE 3.5‑litre V6 (and the QR25DER hybrid engine, where fitted), allowing the ECM to time spark and fuel injection to the millisecond, sync with the cam sensors, monitor misfire, and manage idle and starting. If the CKP goes out, the engine may crank but won’t start, or it’ll stumble and stall without warning.

It isn’t a scheduled service item, but a bit of preventative thinking goes a long way:

• Watch for tell-tales: long cranking, intermittent stalling, dead tachometer signal, rough idle, or a check-engine light with codes P0335–P0339.
• Inspect the wiring and connector during services—heat, oil seepage, or chafed looms near the bellhousing area can cause intermittent faults.
• Use a scan tool to confirm live RPM during crank, no RPM often points to the CKP or its circuit.

Replacement is straightforward for most DIYers. On the VQ35DE it’s mounted low at the rear of the engine near the transmission bellhousing, access is typically from underneath after removing the splash shield. On the QR25DER hybrid it’s mounted low on the block, standard engine-safety applies—keep clear of high‑voltage orange cables even though the CKP itself is on the engine side.

1. Disconnect the negative battery terminal.
2. Unplug the sensor, remove the single retaining bolt, and gently twist the sensor free.
3. Lightly oil the new O‑ring, seat the sensor squarely, and torque the bolt to about 8.7 N·m (per Nissan FSM).
4. Reconnect, clear any codes, and road test while monitoring live data.

No programming is typically required, if idle quality is off, perform an Idle Air Volume Learn as outlined in the FSM. For reliability, choose genuine or high‑quality aftermarket sensors—signal accuracy matters.

Where is the crank-angle sensor on a 2015 Pathfinder?
On the VQ35DE V6 it’s mounted low at the rear of the engine near the transmission bellhousing, usually reached from underneath after removing the front undertray. On hybrid QR25DER models it’s fitted low on the engine block. A torch and a small 10 mm socket help a lot.

What are the common symptoms of a failing CKP sensor?
Typical signs include a no‑start or long crank, sudden stalling while driving, rough idle, erratic tachometer behaviour, poor fuel economy, and a check‑engine light. Scan tools often show codes P0335–P0339, and live data may show no RPM during cranking.

Does a new CKP sensor need programming?
Generally, no. After installing a CKP sensor on a 2015 Pathfinder, clear any fault codes and test drive. If idle is unstable, perform the Idle Air Volume Learn per the Nissan FSM. It’s good practice to check for ECM updates, but CKP replacement alone doesn’t usually require reprogramming.