Parts for your 2010 Toyota Aurion-Knock sensor

2010 Toyota Aurion Knock Sensor — What It Does and How to Look After It

Based on Toyota’s own technical literature for the GSV40-series Aurion with the 2GR‑FE 3.5‑litre V6, the 2010 model is fitted with two knock sensors (one per bank) mounted in the V of the block beneath the intake manifold. This is supported by the Toyota repair manual and EPC parts listings for the 2GR‑FE, and by standard OBD‑II diagnostics for this vehicle that include knock-sensor fault codes P0325 (Bank 1) and P0330 (Bank 2). So yes, the knock sensor is absolutely relevant and used on the 2010 Toyota Aurion.

The knock sensor’s day job is simple but critical: it listens for knock (pinging) and tells the ECU to tweak ignition timing before anything nasty happens. That smart, on-the-fly adjustment protects the engine under load, helps it run sweet on Aussie/NZ fuels, and keeps power, economy, and emissions on point. Without a healthy sensor, the ECU often plays it safe by pulling timing, which saves the motor but leaves the Aurion feeling a bit flat.

There’s no scheduled replacement interval for the knock sensors on a 2010 Aurion, they’re “fit and forget” unless there’s a fault. Tell-tales include a check engine light with P0325/P0330, sluggish performance, poor fuel use, and sometimes audible pinging under load. Because the sensors live under the intake manifold, access isn’t as simple as popping a cover—replacement is a proper workshop job.

When they do need attention, best practice is to use quality, correct-spec sensors and new intake manifold gaskets. Wiring matters just as much: the loom is shielded to prevent electrical noise, so avoid dodgy splices and make sure the routing and connectors are tidy and dry. During refit, the sensor’s seating face must be clean and the bolt tightened to the workshop manual’s torque spec—over-tightening can make the sensor “deaf,” under-tightening can make it “jumpy.” After replacement, clear codes, road test under load, and check live data if available.

• Keep cooling and intake systems in good nick, excess heat and carbon build-up can provoke knock.
• Run the recommended unleaded, the ECU can adapt, but it’s not a licence to ignore fuel quality.
• If performance drops with a CEL, scan first—wiring faults are as common as failed sensors.

Popular questions

Does the 2010 Aurion have one or two knock sensors, and where are they?
It has two—one for each cylinder bank. They’re mounted low in the V of the 2GR‑FE engine, beneath the intake manifold. That means intake removal to access them, so allow workshop time if one needs replacing.

What fault codes point to a bad knock sensor on a 2010 Aurion?
Common codes are P0325 (Knock Sensor 1, Bank 1) and P0330 (Knock Sensor 2, Bank 2). These can indicate a failed sensor, but corroded connectors or damaged shielded wiring can trigger the same codes, so proper diagnosis is key.

Is it safe to drive with a faulty knock sensor?
Short term, the ECU usually retards timing to protect the engine, so it’ll feel down on power and use more fuel. It’s not wise to keep driving under heavy load like towing or high-speed climbs—get it checked and sorted promptly.