Parts for your 2014 Toyota Camry-Knock sensor

2014 Toyota Camry knock sensor — what it does and when to replace it

Based on technical sources — including Toyota’s service information for the 2014 Camry (Engine/Hybrid System: Knock Sensor diagnostics and wiring), the Toyota Electronic Parts Catalog for engines 2AR-FE (2.5L), 2AR-FXE (Hybrid 2.5L) and 2GR-FE (3.5L V6), and factory diagnostic coverage for DTCs P0325/P0330 — the 2014 Toyota Camry is fitted with knock sensor hardware. The four‑cylinder engines use one knock sensor on the block, while the V6 uses two (one per bank) via a sub‑harness.

For this Camry, the knock sensor is a quiet workhorse. It “listens” for detonation (knock) in the cylinders and feeds that signal to the engine ECU. When the ECU detects knock, it trims ignition timing just enough to protect the engine, then nudges timing forward again to keep performance and fuel economy on point. That’s why the car runs smoothly on everyday Aussie and Kiwi petrol, even with variations in RON and driving conditions.

There’s no routine servicing item just for the knock sensor on a 2014 Camry. It’s generally a fit‑and‑forget part until a fault pops up — think a check engine light with codes like P0325 (sensor circuit) or P0330 (V6 second sensor), rough running, flat performance, or unusually high fuel use. If any of that shows up, proper diagnosis is the go: confirm the code, inspect the connector and loom under the inlet manifold area (heat and vibration live here), and verify the sensor signal before calling it a dud.

If replacement is needed, it’s smart to use a genuine‑spec sensor so the frequency response matches Toyota’s calibration. On the I4, the sensor is mounted to the block below the intake, on the V6 there are two under the manifold with a sub‑harness. A few practical tips make life easier:

• Disconnect the battery and let the engine cool — access is cramped and hot.
• Remove the intake components carefully and label vac lines and connectors.
• Clean the mounting pad on the block and torque the new sensor to factory spec — over‑ or under‑torque can skew readings.
• Route the harness exactly as per the clips to avoid false knock from wire vibration.
• Clear codes, then road‑test through a few load/gear conditions so the ECU relearns spark advance.

Day to day, quality petrol, keeping the cooling system healthy, and fixing intake leaks quickly all help the knock sensor and ECU keep the Camry running sweet as.

Popular questions about 2014 Toyota Camry knock sensors

Does the 2014 Camry have one or two knock sensors?
The 2.5‑litre four‑cylinder (2AR‑FE) and Hybrid (2AR‑FXE) use a single knock sensor on the engine block. The 3.5‑litre V6 (2GR‑FE) uses two sensors, one per cylinder bank, connected via a sub‑harness beneath the intake manifold.

What symptoms point to a bad knock sensor on a 2014 Camry?
Common signs include a check engine light with P0325 or P0330, sluggish acceleration, pinging under load, and poorer fuel economy. Sometimes the ECU pulls timing so effectively that the car just feels flat rather than noisy. Always check the wiring and connectors before condemning the sensor.

Is the knock sensor a regular service item?
No — Toyota doesn’t list it as scheduled maintenance. It’s replaced only when diagnostics confirm a fault. Using the correct torque on installation and keeping the wiring secure are the big reliability factors after replacement.