Parts for your 2008 Nissan X-trail-Crank angle sensor

2008 Nissan X‑Trail crank angle sensor: what it does and how to look after it

Technical sources confirm the 2008 Nissan X‑Trail (T31) is fitted with a crank angle sensor, more commonly listed in Nissan documentation as the crankshaft position sensor. The Nissan X‑TRAIL T31 Service Manual (Engine Control section for MR20DE petrol and M9R diesel) describes the sensor’s role and related fault codes (e.g., P0335/P0336). Nissan’s FAST parts catalogue also lists a crankshaft position sensor for 2008 T31 variants, and independent references such as Autodata and workshop manuals align with this. These sources make it clear the sensor is a core input to the engine control module, not an optional extra.

On the 2008 X‑Trail, the crank angle sensor (aka crankshaft position sensor) is the timing heartbeat for the engine computer. Mounted at the engine block to read a toothed wheel on the crank or flywheel, it tells the ECM exactly where each piston is and how fast the crank is spinning. That info is used to fire the coils and injectors spot‑on, coordinate variable valve timing where fitted, and keep tabs on misfires and stalling. If the signal drops out, the engine may crank but not start, or cut out under way.

It isn’t a scheduled replacement item, but it deserves a quick look during routine servicing. Under the bonnet, trace the loom down toward the bellhousing area, on MR20DE petrol it’s typically low on the block near the transmission, and on M9R diesel it reads the flywheel at the rear of the engine. Make sure the connector is clean and latched, the wiring isn’t chafing on brackets, and there’s no oil weeping down onto the sensor body. Grime and oil contamination can upset the signal on magnetic‑type sensors.

• Common signs it’s crook: long cranking (often worse when hot), random stalling, rough idle, dead or jumpy tacho, and a Check Engine lamp with codes like P0335/P0336.
• Replacement tips: disconnect the battery, gain access from underneath, unplug the connector, remove the small retaining bolt, twist and withdraw the sensor, lightly oil the new O‑ring, seat it squarely, and tighten the bolt to the factory spec (usually a light torque). Route the loom away from heat and sharp edges.
• After fitment: clear any codes and, if available, run a crankshaft position or idle air volume learn with a scan tool. Many ECUs relearn with a short, steady drive and a proper idle period.

Use genuine or reputable aftermarket parts, bargain sensors often give weak or noisy signals. If the old sensor tip shows metal fuzz, consider inspecting for debris or reluctor damage, especially on high‑kilometre diesels. Folding this quick check into 10–15,000 km services in Australia and New Zealand can help dodge a no‑start drama at the servo or in the driveway.

Does a 2008 Nissan X‑Trail have a crank angle sensor, and where is it?

Yes. All 2008 T31 X‑Trail engines (MR20DE petrol and M9R diesel) use a crank angle/position sensor as a primary ECM input. It’s typically mounted low on the engine near the gearbox bellhousing, reading a toothed wheel on the crank or flywheel. Access is often easiest from underneath with the splash shield off.

What are the usual symptoms or fault codes for a failing crank angle sensor on this model?

Hard starting (hot or cold), random stalling, rough idle, loss of power, and a dead or flickering tacho are common. The ECM may log P0335 (crank sensor circuit) or P0336 (range/performance). Wiring damage or oil contamination at the connector can mimic a failed sensor, so visual checks matter.

Can it be driven with a dodgy crank angle sensor?

Sometimes it’ll run intermittently, but it can also stall without warning or refuse to restart. That’s unsafe and can leave the driver stranded. If those symptoms appear, it’s best to diagnose promptly, repair any wiring issues, and replace the sensor if it’s out of spec—then clear codes and perform a relearn if needed.