Parts for your 2017 Nissan Pathfinder-Ignition coils

2017 Nissan Pathfinder Ignition Coils

Technical sources confirm ignition coils are absolutely relevant to the 2017 Nissan Pathfinder. The Nissan Factory Service Manual for the R52 series (2017 model year) and the Nissan parts catalogue specify a coil-on-plug ignition system for the VQ35DD 3.5-litre petrol V6, with one ignition coil fitted to each cylinder.

On the 2017 Pathfinder, the ignition coils are the workhorses that transform the battery’s low voltage into the high-voltage spark needed to light the air–fuel mix. With a coil perched directly on top of each spark plug, the system is clean, efficient and tightly controlled by the engine computer for smooth running and decent fuel economy.

Day to day, the coils don’t demand scheduled replacement like oil or filters. They’re generally replaced only when faulty. Still, there are a few easy wins to keep them happy: stick to the correct spark plug type and change interval (usually around 160,000 km or as the service guide states), keep the top of the engine dry, and avoid blasting water under the bonnet. A small dab of dielectric grease inside each coil boot at plug changes helps prevent tracking and moisture issues.

If the engine develops a misfire, feels down on power, or the MIL/check engine light pops up with codes like P0300–P0306, a weak or failed coil could be the culprit. A quick diagnostic approach is to read fault codes, inspect coil boots for cracking or carbon tracks, and, if safe, swap the suspect coil to another cylinder to see if the misfire follows. Also check for oil in the plug tubes from cam cover gasket leaks, as oil contamination can damage boots and cause misfires.

When replacing coils, use quality OEM-equivalent parts and new spark plugs if they’re near due. Disconnect the battery, remove the engine cover, unplug each coil connector and undo the small hold-down bolt. Refit carefully and torque fasteners correctly, coil hold-down bolts are light (about 8–9 Nm), and spark plugs should be tightened to the plug maker’s spec (typically around 18–22 Nm for the VQ35DD long-reach plugs). Clear codes and road test to confirm a clean, smooth idle and strong pull.

Left too long, a misfiring coil can wash fuel into the catalyst and shorten its life. Sorting coils promptly keeps the Pathfinder reliable for school runs and long holiday hauls alike.

• Common signs: rough idle, hesitation, poor fuel economy, MIL on with misfire codes.
• Prevention: correct plugs, dry engine bay, light dielectric grease in boots.
• Good practice: scan for codes, inspect boots, replace coils in matched quality.

Popular questions about 2017 Nissan Pathfinder ignition coils

How often should the ignition coils be replaced?

There’s no fixed interval. Coils are replaced when they fail testing or show symptoms like misfires, rough running or hard starting. Many last well past 160,000 km if the correct spark plugs are used and there’s no oil or water intrusion in the plug tubes.

If the vehicle is nearing the spark plug interval or has intermittent misfires, it’s smart to check coil health at the same time to avoid doubling up on labour.

What are the symptoms of a failing coil on a 2017 Pathfinder?

Typical signs include a shaky idle, hesitation under load, poorer fuel economy, and the check engine light with a cylinder-specific misfire code (P0301–P0306). In wet weather, a weak coil can act up more noticeably if moisture is present in the boot.

Physical inspection may show cracked boots or carbon tracking. Oil in plug wells from cam cover leaks is another red flag that can lead to repeated misfires.

Is it safe to drive with a bad ignition coil?

Short trips to a workshop are usually fine, but extended driving on a misfiring cylinder isn’t recommended. Raw fuel can overheat and damage the catalytic converter and may foul the spark plug, turning a simple fix into a bigger bill.

Best bet: get the fault scanned and the suspect coil diagnosed or replaced promptly, then clear codes and confirm the fix with a road test.