The knock sensor on a Honda Accord is mounted to the engine block or cylinder head, typically on the side of the block near the intake manifold. The exact location varies by engine type and model year, so consult your service manual for the precise spot.
This article explains where to look for the knock sensor across common Accord engines, with practical cues for four‑cylinder and V6 configurations, plus tips to confirm the exact location for your year.
Engine variants and typical locations
Guidance by engine family helps you identify the right area on your specific Accord. The knock sensor is a small, threaded sensor connected to a wiring harness, and access may require removing some components.
Four-cylinder (K-series) engines
Most Accord four-cylinder engines use a single knock sensor mounted directly into the engine block or on the cylinder head surface. It is typically located on the side of the block toward the front passenger side or behind the intake manifold; the wiring harness runs to the sensor from the top or side of the engine. Access might require removing the intake plenum or air duct.
- Location: Side of the engine block near the cylinder head, commonly beneath or adjacent to the valve cover.
- How to spot: A small cylindrical sensor screwed into the metal with a multi-pin or two-pin electrical connector.
Concluding: For most four-cylinder Accords, expect a single knock sensor on the block or cylinder head that may be obscured by hoses or the intake manifold.
V6 and larger engines
On V6 configurations (older generations), there are typically two knock sensors, one on each bank of cylinders. They are mounted on the engine block near the cylinder heads, usually toward the rear of the engine. Access may require removing some hoses or the intake manifold to reach the sensors.
- Location: On the engine block near the cylinder heads; one sensor often sits toward the firewall side of each bank.
- Access: May require lifting components or removing the intake to reach both sensors.
Concluding: V6 models commonly have two knock sensors; verify with your engine code and service manual for exact placement.
Verifying the exact location for your Accord
Because Honda has updated layouts across generations, the precise knock sensor position varies by engine family and year. Obtain your engine code from the under-hood label or owner's manual to pull the proper diagram from Honda's service site or a repair manual. A quick visual search for a small, threaded sensor with a single or dual-pin connector on the engine block is usually enough to confirm the unit you’re looking for.
- Check engine code (for example K24A, K20C, J35A) in the service manual or label under the hood.
- Look near the side of the engine block behind the exhaust manifold or near the timing cover.
Concluding: The VIN-specific diagram is the most reliable way to locate the knock sensor precisely for your Accord.
Summary
The knock sensor is mounted on the engine block or cylinder head and is usually found along the side of the engine near the intake manifold or timing cover. Exact placement depends on engine type and model year: four-cylinder K-series engines typically have a single sensor on the block, while V6 variants may use two sensors. Always consult your engine code and a repair manual for the precise location and access steps for your specific Honda Accord.