Parts for your 2016 Nissan X-trail-Camshaft sensor

2016 Nissan X‑Trail camshaft sensor: what it does and how to look after it

Yes, the 2016 Nissan X‑Trail runs a camshaft position sensor. This isn’t a guess: the Nissan T32 X‑TRAIL Electronic Service Manual (EC and EM sections) specifies a camshaft position (CMP) signal for fuel injection timing, ignition timing and CVTC/variable valve timing control. Nissan’s FAST parts catalogue also lists CMP sensor part numbers for 2016 X‑Trail engines, including the MR20DD 2.0 petrol, QR25DE 2.5 petrol and the R9M 1.6 diesel. Those technical sources make it clear the sensor is fitted and essential.

The camshaft sensor tells the engine computer exactly where the camshaft is in its rotation. Paired with the crank sensor, it lets the ECU fire the injectors and spark at the perfect moment, keeps cold starts tidy, and allows the variable valve timing system to do its thing. When it’s healthy, owners get smooth idle, decent fuel economy and clean emissions, when it’s grumpy, there’s rough running, hard starting and warning lights.

It’s not a scheduled replacement item, but it does deserve attention during servicing. Under the bonnet, a quick visual check at major services (say every 60,000–80,000 km) is smart: look for brittle wiring, oil wicking into the connector, or a cracked sensor body. If the MIL is on, scan for codes like P0340/P0341/P0345/P0346 and check live data for cam/crank synchronisation before throwing parts at it.

• Typical symptoms of a failing CMP: long crank or no‑start, sudden stalling, poor throttle response, misfires, limp mode, and a fuel economy hit.
• Simple care tips: keep the connector clean and seated, clip the loom so it can’t chafe, and fix any rocker cover oil leaks early.

Replacement on the X‑Trail is straightforward for a competent DIYer: disconnect the battery, remove the engine cover, unplug the sensor, take out the hold‑down bolt, and withdraw the sensor. A light smear of clean engine oil on the new O‑ring helps it seat without tearing. Refit, tighten the fastener to spec (snug, not gorilla), reconnect and clear codes. Many scan tools can perform a cam/crank relearn, it’s good practice after replacement. Stick with a genuine or high‑quality aftermarket sensor to avoid intermittent faults that cheap copies can introduce.

If in doubt, a technician can confirm CMP operation with an oscilloscope and verify valve timing and VVT control are behaving under load.

Where is the camshaft sensor on a 2016 Nissan X‑Trail?

On the petrol MR20DD/QR25DE engines, the camshaft sensor is typically mounted at the timing chain end of the cylinder head, near the top front under the engine cover. On the 1.6 dCi (R9M) diesel, it’s commonly at the rear of the head, closer to the firewall. Access may vary slightly by market and engine cover style.

What are the common symptoms and fault codes?

Owners usually notice long cranking, rough idle, random stalling, lack of power and a check‑engine light. Common OBD‑II codes include P0340/P0341 (camshaft position circuit/performance) and, where multiple sensors are used, P0345/P0346 for the other bank or cam. A scan tool showing unstable cam/crank sync is another giveaway.

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

Not really. It may keep running for a while, but it can stall without warning and run rich or oddly, which isn’t great for the catalytic converter (or DPF on diesels). Best to diagnose and replace promptly to avoid a roadside drama.