Parts for your 2017 Honda Odyssey-Knock sensor

2017 Honda Odyssey knock sensor — what it does and when to service it

Based on Honda’s workshop manual for the 2014–2017 Odyssey (3.5‑litre V6) and Honda’s electronic parts catalogue, the 2017 Honda Odyssey is fitted with a knock sensor. These technical sources list the knock sensor as a block‑mounted component in the V‑bank area and include diagnostic procedures for related OBD‑II trouble codes, confirming it’s a relevant, OEM‑specified part on this model.

On this Odyssey, the knock sensor’s job is to “listen” for detonation (knock) and let the engine control unit trim ignition timing to keep things smooth and safe. That smarts helps protect the alloy V6 from damage, keeps torque nice and punchy when towing or climbing hills, and lets the van run happily on everyday Aussie and Kiwi petrol without fuss.

The sensor sits threaded into the engine block under the intake manifold, where it can detect vibration from both cylinder banks. It isn’t a scheduled service item like plugs or filters. Instead, good practice is to check the wiring and connector during other intake‑off jobs, keeping an eye out for brittle loom tape, oil or coolant contamination, or anything rubbing through the harness.

Replacement is usually only on condition. Telltales include a check‑engine light with codes like P0325/P0327/P0328, pinging under load, doughy performance, or higher fuel use. If it’s time to swap one, go for a genuine or quality aftermarket unit, use the correct torque on installation, and route the harness exactly as per factory to avoid false knock or repeat faults. Because access is under the manifold, many techs plan the job alongside other intake‑side work (rear bank spark plugs, PCV service, or intake cleaning) to save time and labour.

Day‑to‑day, owners can help the knock control system by using the recommended octane, keeping the cooling system healthy, and fixing any vacuum, exhaust, or intake leaks promptly. If towing caravans or loading up for family road trips, listening for rattly “pinging” under the bonnet and scanning for stored codes during regular services is a smart move.

• Common symptoms of a crook knock sensor: check‑engine light, audible pinging, sluggish acceleration, poor economy.
• Best time to inspect: whenever the intake manifold is off or at major services where access makes sense.

Popular questions

Does the 2017 Honda Odyssey actually have a knock sensor?
Yes. Honda’s workshop manual and parts listings for the 2014–2017 Odyssey V6 show a single block‑mounted knock sensor in the V‑valley. Diagnostic flowcharts also cover knock‑sensor‑related fault codes, confirming it’s standard equipment.

How often should the knock sensor be replaced?
There’s no set interval. It’s replaced only if fault codes point to it or testing finds it out of range. Many last the life of the vehicle, failures are more often due to harness damage, fluid contamination, or incorrect torque after engine work.

Is it safe to drive with a bad knock sensor?
The ECU will usually pull timing to protect the engine, so the van may feel flat and use more fuel. If real knock is occurring and the sensor can’t report it properly, long‑term engine damage is possible. Best bet: get it diagnosed and sorted promptly.