Parts for your 2016 Toyota Hilux-Knock sensor

2016 Toyota Hilux knock sensor — what’s fitted and what to know

Technical sources indicate the 2016 Hilux does use a knock sensor on its petrol variants and does not use a knock sensor on its diesel variants. This is confirmed by Toyota’s N80 Hilux repair manual and Electrical Wiring Diagram for 2015–2020 (which show knock sensor circuits and DTCs such as P0325/P0327/P0330 for 2TR‑FE 2.7L and 1GR‑FE 4.0L petrol engines), and by the Toyota parts catalogue listings (knock sensor assemblies are catalogued for the petrol engines, not for the 1GD‑FTV 2.8L or 2GD‑FTV 2.4L diesels). Toyota diagnostic literature for the GD diesels has no knock sensor inputs shown.

Why diesels miss out: diesel combustion is managed by injection timing and rail pressure rather than spark, and typical petrol-style detonation sensing isn’t required. The GD‑series diesels rely on crank/cam position, fuel pressure, boost, and EGR feedback. Given the higher mechanical noise floor of a diesel, a conventional piezo knock sensor wouldn’t provide clean, useful data in this application.

For petrol 2016 Hilux models, the knock sensor is a quiet achiever. Bolted to the engine block (two sensors on the 1GR‑FE V6, one on the 2TR‑FE 4‑cyl), it “listens” for abnormal combustion and lets the ECU trim ignition timing to keep things smooth and protect the engine. It helps maintain power on our varied Aussie and Kiwi fuels, improves economy, and prevents pinging on hot days or under heavy loads like towing the boat or tradie gear.

It’s not a scheduled replacement item, but it’s smart to include a quick check during servicing. Signs it’s not happy include a lit MIL, sluggish performance, higher fuel use, or rattly pinging under load. Common fault codes are P0325, P0327, and P0330. If those pop up, a tech should inspect the harness and connector (heat and oil can make them brittle), verify proper sensor mounting, and check for intake leaks or carbon build‑up that may cause knock. The sensor must be torqued to the factory spec and mounted cleanly on the block—too loose, too tight, or dirty mating surfaces can throw off readings.

Replacement is straightforward for a trained mechanic but can be fiddly due to access (often under the intake). Genuine‑quality parts are recommended. Clear the codes, run a road test, and confirm knock correction activity with a scan tool. Look after it, and the knock sensor quietly keeps the petrol Hilux running sweet across thousands of kilometres.

• Best practice: inspect wiring and connectors at major services.
• Use proper torque and a clean mounting pad on refit.
• Address pinging or knock codes early to avoid engine damage.

Popular questions

Does a 2016 Hilux diesel have a knock sensor?
No. The 1GD‑FTV 2.8L and 2GD‑FTV 2.4L diesels don’t use a knock sensor. Toyota’s wiring diagrams and repair info show no knock sensor circuit on these engines. Diesel combustion is controlled by injection strategy, so a petrol‑style knock sensor isn’t required.

What are the symptoms of a bad knock sensor on a 2016 Hilux petrol?
Drivers might notice a check engine light, reduced power, flat spots, heavier fuel use, or audible pinging under load. Scan tools often reveal P0325, P0327, or P0330. A good inspection will also check the loom and connector near the intake for heat or oil damage.

Can you keep driving with a knock sensor fault?
The ECU usually dials back ignition timing to protect the engine, so it’ll run, but it may be gutless and thirsty. It’s best to sort it promptly—continued driving with real knock can harm the engine, and leaving a wiring or mounting issue unattended can cause misdiagnosis later.