The knock sensor on a Honda Element is mounted on the engine block, typically on the side of the cylinder head. Most Elements with the 2.4L K-series engine use one sensor, while some versions may have two sensors located on opposite sides of the block, all connected to the ECU by a harness.
Typical locations on the Element's engine
On many K-series engines found in the Element, the knock sensor(s) are threaded into the engine block near the cylinder head. The exact position can vary by year and revision, but you’ll generally find the sensor screwed into the block with a small electrical connector trailing to the engine control unit. If your Element has two sensors, they are usually mounted at different points along the block to monitor detonation in multiple regions.
Commonly, you should look for a small round or rectangular sensor with a two- or three-wire harness that plugs into the engine wiring harness. The connector often clears the surrounding components more easily when the air intake and any engine covers are removed.
- One knock sensor is typical on many K-series Element engines and sits on the engine block adjacent to the cylinder head.
- If your vehicle uses two sensors, they are typically located on opposite sides of the block for broader detonation monitoring.
- The sensor wires run to the ECU/PCM via a dedicated connector, which may be tucked behind other components or under the intake manifold.
These locations are common starting points; however, exact position can vary by model year and engine revision. For a precise location, consult the service manual or your dealer.
Locating the knock sensor on your specific Element
Steps to locate
- Park on level ground and disconnect the negative battery terminal to prevent any electrical shorts while you work.
- Open the hood and remove any covers or components that block access to the engine block or the area around the cylinder head.
- Trace the electrical harness from the engine control unit (ECU/PCM) toward the engine block to locate the knock sensor(s).
- Look for a small sensor threaded into the block with a two- or three-wire connector. If you see one or two sensors at different positions on the block, you’ve found the knock sensor(s).
When removing or replacing a knock sensor, use the service manual’s torque specifications and proper sealing to avoid leaks or improper sensor readings. If you’re unsure, consult a qualified mechanic or Honda dealer.
Additional notes and verification
Testing and symptoms
Common symptoms of a failing knock sensor include the check engine light, poor fuel economy, rough idle, or ECU-dimed timing adjustments. Diagnostic trouble codes (DTCs) related to the knock sensor typically reference the KS circuit (for example, P0332 or P0333 on some models). If you suspect a sensor issue, verify wiring continuity and the sensor resistance using the factory service procedures before replacing.
Summary
The knock sensor in a Honda Element is mounted on the engine block, usually near the cylinder head, and most models use one sensor with a possible second sensor on the opposite side of the block. Exact location varies by year and engine revision, so consult the service manual for your specific model. Access and verify by tracing the ECU harness to the engine and inspecting the sensor(s) on the block. If in doubt, seek professional assistance to diagnose wiring or sensor faults.