Parts for your 2015 Nissan Navara-Ignition coils

2015 Nissan Navara ignition coils — are they actually used?

For Australia and New Zealand–delivered 2015 Nissan Navara models (D23 NP300), ignition coils aren’t fitted or required. Technical references including the Nissan D23/NP300 service manual for the YS23DDT/DDTT engines (diesel), the Nissan Electronic Parts Catalogue for D23 diesel variants, and local 2015 specification brochures confirm these vehicles were launched here with 2.3‑litre turbo‑diesel engines only, which do not employ spark ignition or coil packs. Instead, they use compression ignition and a glow plug system for cold starts.

Why no coils? Diesel engines ignite fuel by the heat of compression rather than a spark. The YS23 engines feature high compression ratios and rely on glow plugs to pre‑heat the combustion chambers when it’s cold. The diesel engine control system, wiring diagrams, and component lists in the factory service manual show glow plugs and glow controllers, but no coil‑on‑plug modules or high‑tension ignition components. That’s why “ignition coils” aren’t a service item on AU/NZ 2015 Navara diesels.

What should owners focus on instead? On these diesels, it’s worth keeping the glow plug system healthy and following the maintenance schedule for fuel filtration, air filtration, injector cleanliness, and EGR/DPF health. Hard starting when cold, uneven idle just after start, or white smoke on a cold morning can point to tired glow plugs or a control issue. A proper scan and resistance check of the plugs and the glow controller is the right next step.

There are 2015 Navaras in other markets (and a few private imports locally) with the QR25DE 2.5‑litre petrol engine. Those petrol variants do use coil‑on‑plug ignition coils, as detailed in the D23 service manual’s petrol engine section and reflected in parts listings for the QR25DE. If someone’s Navara is a petrol import, coils become relevant and the typical misfire symptoms apply.

• How to tell what you’ve got: check the engine code on the build plate or rego papers. YS23 = diesel (no coils). QR25DE = petrol (has coils).
• Petrol import coil symptoms: rough idle, misfire under load, hard starts, higher fuel use, and stored misfire codes.
• Diesel equivalents to “ignition” maintenance: glow plugs, battery condition, and good-quality diesel with timely filter changes.

FAQs

Does a 2015 Nissan Navara in Australia or New Zealand have ignition coils?
Generally, no. Local 2015 Navaras are D23 NP300 diesels (YS23DDT/DDTT) that use compression ignition and glow plugs, not spark ignition. Factory service information and local spec sheets list no ignition coils for these models.

How do I know if my 2015 Navara needs ignition coils replaced?
Only relevant if it’s a petrol QR25DE import. Signs include misfires, rough idle, stumbling under load, and misfire fault codes. If it’s a YS23 diesel, there are no coils—check glow plugs and the fuel/air systems instead.

What should I service instead of ignition coils on a diesel 2015 Navara?
Stick to the maintenance schedule for fuel and air filters, keep the battery strong, and have the glow plugs and their controller tested if cold starts are sluggish. Clean injectors and healthy EGR/DPF systems also keep the YS23 running sweet.