Parts for your 2020 Nissan Pathfinder-Camshaft sensor

2020 Nissan Pathfinder camshaft sensor — purpose, fitment and servicing

The 2020 Nissan Pathfinder (R52, VQ35DE 3.5L V6) absolutely uses camshaft position sensors. Nissan’s Electronic Service Manual (ESM) for the R52 details two “Camshaft Position (PHASE) Sensors,” one on each cylinder bank, with the Engine Control Module relying on their signals for sequential fuel injection and the Continuously Variable Valve Timing system. The ESM’s EC section and wiring diagrams show both sensors and related diagnostics, including DTCs P0340 and P0345 for Bank 1 and Bank 2 cam signals. That technical documentation confirms the camshaft sensor is not only fitted, but critical to how this Pathfinder runs.

On this model, the camshaft sensor keeps the engine timing sharp by telling the ECU exactly where each cam is, in real time. That lets the Pathfinder fire injectors at the right moment, trim ignition timing, and command valve timing for smooth torque and decent fuel economy. When a sensor plays up, drivers may notice hard starting, rough idle, a flat spot on acceleration, or the odd stall under the bonnet’s heat soak, with the Check Engine light and codes like P0340/P0345 chiming in.

It’s not a scheduled service item, but it does deserve a bit of love during routine maintenance. Under the bonnet, a quick look at the sensor plugs and harness for brittle insulation, oil wicking, or green crust on terminals goes a long way. Healthy engine oil matters too, sludgy oil can mess with valve timing behaviour and muddy diagnostics, even if the sensor itself is fine.

Replacement is straightforward with basic tools: disconnect the battery, unplug the connector, remove the retaining bolt, then gently twist and pull the sensor out. Lightly oil the new O-ring, seat the new unit, nip up the bolt, reconnect and clear codes. There are two sensors—one per bank—so access varies, one is usually tighter to reach. Using a quality OEM-equivalent part is wise, as cheap sensors can cause intermittent dramas that are maddening to chase.

• Common symptoms: long crank, misfire/rough idle, limp-home mode, poor fuel economy, CEL with P0340/P0345.
• Quick checks: clean/secure connectors, no oil leaks at sensor O-rings, healthy battery voltage, up-to-date oil changes.
• When to replace: only when faulty or contaminated, consider doing both if high kilometres and repeated cam signal faults persist.

Popular question: How do you know the camshaft sensor is failing on a 2020 Pathfinder?
Typical signs include long cranking when cold, stumbling idle, or sudden power loss after heat soak. The Check Engine light often sets with codes P0340 (Bank 1) or P0345 (Bank 2). Before replacing, check the connector, wiring, and oil condition, then confirm with a scan tool reading live cam/crank correlation.

Popular question: Is it safe to drive with a bad camshaft sensor?
It may still run, but performance can be patchy and fuel use can climb. In some cases it’ll stall or drop into a reduced-power strategy. Best bet is to minimise driving, pull the codes, and sort the fault promptly to avoid being stranded.

Popular question: Do both camshaft sensors need replacing at once?
Not necessarily. Replace the faulty bank first. If the vehicle has high kilometres and both banks show intermittent cam signal errors or the same age sensors, replacing them as a pair can save a second visit under the bonnet.