Parts for your 2023 Toyota Camry-Knock sensor

2023 Toyota Camry knock sensor: what it does and how to look after it

Technical sources confirm the 2023 Toyota Camry is fitted with knock sensors, so the knocksensor is absolutely relevant on this model. Toyota’s Repair Manual (TIS) for the A25A-FKS/FXS 2.5‑litre four-cylinder and the 2GR‑FKS 3.5‑litre V6 lists “Knock Sensor (No.1/No.2)” in the Engine Control system and details “Knock Control” strategy. The Toyota Electronic Parts Catalogue also shows knock sensors for these engines, and the diagnostic section covers DTCs P0325–P0334 relating to knock sensor circuits. In short, every 2023 Camry variant relies on a knocksensor setup to protect the engine and optimise performance.

On the 2023toyotacamry, the knock sensor is a piezoelectric microphone bolted to the engine block. It listens for the unique vibration signature of detonation (pinging) and feeds that signal to the ECM. When knock is detected, the ECM trims ignition timing and fuelling to stop damage, then carefully restores advance for best efficiency. This keeps the Camry running smoothly on local 91 RON petrol while still delivering solid economy over Aussie and Kiwi kilometres.

Most 2023 Camry engines use two knock sensors: the 2.5‑litre has No.1 and No.2 positioned along the block, and the V6 uses one per bank. They’re calibrated to the engine’s acoustics, so correct torque, orientation, and harness routing matter a lot. It’s not a routine replacement item, but it deserves attention during servicing.

• What to look for at service time:
  • Check the knocksensor connectors and loom for oil contamination, brittle conduit, or chafing on brackets and the block.
  • Confirm the harness is clipped away from high-noise sources (alternator, ignition leads) to avoid false signals.
  • If the sensor’s been removed, clean the block pad to bare metal and torque the new unit exactly to Toyota spec from the Repair Manual.
• Typical fault signs:
  • Check Engine light with codes like P0325/P0327/P0330/P0332.
  • Noticeable pinging under load, flat performance, or higher fuel use as the ECM pulls timing.
• Replacement tips:
  • Use a quality, engine-specific sensor—generic items may misread vibration.
  • Never “test” by tapping the sensor, that can damage it. Use scan data and the Toyota diagnostic routine instead.
  • If a code persists, inspect earthing and shared grounds before condemning the sensor.

Handled properly, the 2023 Toyota Camry knock sensor is a quiet guardian: it protects the engine from detonation, helps the ECM keep timing right on the money, and lets drivers enjoy smooth, efficient motoring across Australia and New Zealand.

Does the 2023 Camry have one or two knock sensors?

The 2.5‑litre A25A engines use two knock sensors (No.1 and No.2) along the block, while the 3.5‑litre 2GR‑FKS V6 uses two—one per bank. This layout gives the ECM a clear read on knock across all cylinders for accurate timing control.

Which fault codes point to a bad knock sensor, and is it safe to drive?

Common codes include P0325/P0327 (sensor 1 circuit/low) and P0330/P0332 (sensor 2 circuit/low). The car may still run but with reduced performance as timing is retarded. Avoid heavy loads and get it checked promptly to prevent potential engine damage.

What fuel should be used, and does premium petrol affect the knock sensor?

The Camry is designed to run on 91 RON minimum in AU/NZ. Premium (95/98 RON) can reduce knock tendency under heavy load, but the knock sensor remains essential—its job is to continuously monitor and let the ECM fine‑tune timing, whatever fuel you choose.