Parts for your 2014 Toyota Crown-Knock sensor

2014 Toyota Crown knock sensor

Yes, the 2014 Toyota Crown is fitted with knock sensor(s). Toyota service literature for the S210-series Crown (GRS210/211/214, AWS210) shows dedicated knock sensor circuits and diagnostics across the engines used in this model range, including 4GR‑FSE 2.5L V6, 2GR‑FSE 3.5L V6, and the hybrid’s 2AR‑FSE 2.5L four-cylinder. Technical references include: Toyota Crown GRS210/AWS210 Repair Manual, Engine Control (EM) – Knock Sensor description and DTCs P0327/P0328/P0332/P0333, Toyota Electrical Wiring Diagram 2013–2015 Crown – Knock Sensor circuit, Toyota EPC listings showing knock sensor(s) for the above engines.

The knock sensor on a 2014 Toyota Crown quietly keeps the engine sweet. It listens for knock (also called pinging) and lets the ECU trim ignition timing and, if needed, fuelling to protect the engine while keeping it responsive and efficient on Aussie and Kiwi fuel. Whether it’s the smooth 4GR/2GR V6 or the 2AR hybrid mill, the Crown relies on one or two piezoelectric sensors bolted to the block to detect vibration signatures of abnormal combustion.

When a knock sensor ages, gets contaminated, or its wiring goes brittle, the ECU often plays it safe with retarded timing. That can mean lazy performance, heavier fuel use, and a glowing MIL with codes like P0327 or P0333. Left unfixed, genuine knock under load can escalate into piston and bearing damage, so it’s worth sorting sooner rather than later.

As part of routine servicing, the knock sensor isn’t a scheduled replacement item, but it does benefit from a quick once-over whenever the intake is off or coils/plugs are being done. A smart approach on a Crown looks like this:

• Scan for stored knock-sensor codes after any pinging complaint, rough running, or poor economy.
• Inspect the connector for oil ingress or corrosion and ensure the harness is clipped away from ignition leads and hot spots.
• If removed, refit to a clean, dry block surface and torque to the workshop manual spec, don’t use sealant or thread tape and keep the sensor’s locating orientation correct.
• Use quality OEM-equivalent parts, cheap copies can be overly sensitive or deaf, causing false timing pulls or missed knock.

Replacement time varies by engine: on some V6 layouts it’s straightforward, on others the intake manifold needs to come off. Budget around 1–3 hours. If the Crown’s a hybrid, standard 12V battery disconnection and basic safety are sufficient for knock sensor work, as the sensor sits on the engine block, not within high-voltage components.

Bottom line: a healthy knock sensor helps the Crown run crisp, protect itself under our varied fuel and climate conditions, and deliver the smoothness owners expect.

Popular questions

Does the 2014 Toyota Crown have a knock sensor?
It does. All 2014 Crown engines (V6 and hybrid four-cylinder) use one or two knock sensors so the ECU can detect and control combustion knock. The system is part of Toyota’s standard engine management on the S210 series.

What are the symptoms of a bad knock sensor on a 2014 Crown?
Common signs include a check engine light, sluggish performance, higher fuel consumption, and sometimes audible pinging under load. Scan tools often show codes like P0327 or P0333. If the ECU pulls timing to protect the engine, the car can feel flat even though it still starts and idles fine.

Should the knock sensor be replaced as preventive maintenance?
Not usually. It’s a monitor-and-repair item. Inspect the connector and wiring during major services, and replace the sensor if fault codes, testing, or physical damage point to it. Always refit with the correct torque and orientation.