Parts for your 2010 Honda Cr-v-Knock sensor

2010 Honda CR‑V knock sensor — what it does and when to replace it

Yes, the 2010 Honda CR‑V definitely uses a knock sensor. Honda’s factory service information for the 2007–2011 CR‑V (PGM‑FI system) shows a piezoelectric knock sensor fitted to the K24Z engine block beneath the intake manifold, and the ECU monitors it with OBD‑II trouble codes like P0325 and P0326. So it’s absolutely relevant to this model.

On this CR‑V, the knock sensor “listens” for combustion knock (pinging) and lets the ECU trim ignition timing on the fly. That means smoother running on everyday petrol, better fuel economy over long kilometres, and crucially, protection for the engine under heavy load, hot weather, or if lower‑octane fuel sneaks into the tank. When the sensor reports knock, the ECU retards timing to keep things safe, when conditions improve, timing is advanced again for performance and efficiency.

Knock sensors aren’t a routine replacement item, but they do benefit from a bit of attention during servicing. A quick visual of the harness under the bonnet—checking the connector is snug, the wiring hasn’t rubbed through, and there’s no oil wicking into the plug—goes a long way. If the check engine light pops up with a knock sensor code, or there’s noticeable pinging under load, it’s time for proper diagnosis.

• Common signs it’s unhappy: check engine light (P0325/P0326), lacklustre power, odd rattling under load, and higher fuel use.
• Good servicing habits: use quality petrol, keep the cooling system healthy, and scan for codes if performance feels off.

When replacement is needed, the sensor is mounted on the block under the intake manifold. Access can be tight, many techs remove the intake for a clean run at it. The sensor should be installed on a clean, dry boss and tightened to the factory torque (Honda specifies roughly 27 N·m). Over‑tightening can crush the sensor, under‑tightening can make it deaf. Use an OEM or high‑quality equivalent part, clear the codes, and perform any required idle/ECU relearn. With that done, the CR‑V is back to quietly doing its thing across town and across New Zealand or Australia.

• Where is the knock sensor on a 2010 Honda CR‑V?
  It’s bolted to the engine block under the intake manifold, roughly below cylinders 2–3. Access is usually from above with the intake removed, or from underneath with the vehicle safely raised.
• What are the symptoms of a bad knock sensor on this model?
  Expect a check engine light (often P0325/P0326), reduced power as timing is pulled back, possible pinging under load, and sometimes poorer fuel economy.
• Does the knock sensor need regular maintenance?
  Not as a scheduled item. During servicing, a quick harness/connector check is smart. Replace the sensor only if it fails testing or throws persistent knock‑sensor‑related fault codes.