Parts for your 2015 Honda Cr-v-Knock sensor

2015 Honda CR‑V Knock Sensor: What it does and when to replace it

Yes, the 2015 Honda CR‑V is fitted with a knock sensor, so it’s absolutely relevant to this model. Technical references that confirm this include the Honda CR‑V 2015 Service Manual (Fuel and Emissions/PGM‑FI System – Knock Sensor description, DTCs P0325/P0327/P0328), Honda technical training on PGM‑FI ignition control, and the Honda Electronic Parts Catalogue listing a “Sensor, Knock” mounted on the K24W 2.4‑litre engine block. These sources outline the sensor’s role in detecting detonation and letting the PCM trim ignition timing for performance, economy, and engine protection.

On this CR‑V, the knock sensor is a piezoelectric microphone bolted to the engine block. When it “hears” knock (pinging), the ECU retards timing cylinder‑by‑cylinder just enough to keep things smooth. That means it’ll happily run on regular unleaded across Aus and NZ while still optimising power on good fuel. It’s one of those quiet heroes that help the engine last longer and sip less.

There’s no scheduled maintenance interval for the knock sensor, it’s a replace‑on‑failure item. Typical signs it needs attention include a check engine light with codes P0325, P0327 or P0328, noticeable pinging under load, sluggish performance, or worse fuel economy because the ECU is playing it safe with retarded timing. Before blaming the sensor, a good tech will rule out poor‑quality fuel, wiring damage, or actual mechanical knock.

Replacement on the 2015 CR‑V is straightforward for a trained technician. It’s mounted to the cylinder block under the intake side. Best practice is to disconnect the battery, let the engine cool, clean the mounting pad, and torque the new sensor to the specified value (Honda service literature specifies a light, precise torque, don’t overtighten). No sealant is used. Keep the harness routed away from ignition leads and high‑heat spots, then clear DTCs and complete any required idle/PCM relearn.

As part of servicing, the workshop should:

• Scan for related DTCs and live knock retard values.
• Visually check the sensor connector and loom for chafing or oil ingress.
• Verify correct torque if the sensor’s been touched during other engine work.
• Advise the owner about fuel quality and any audible pinging.

Sticking with a quality OEM‑equivalent sensor keeps the ECU’s ears sharp, which means better driveability, fewer headaches, and a healthier K24W under the bonnet.

FAQs

Does the 2015 Honda CR‑V have a knock sensor?
Yes. Honda’s 2015 CR‑V (K24W 2.4‑litre) uses a block‑mounted knock sensor that feeds the ECU so it can adjust ignition timing to prevent detonation and protect the engine.

What are the symptoms of a bad knock sensor on a 2015 CR‑V?
Common signs are a check engine light with codes like P0325/P0327/P0328, reduced power, poorer fuel economy, or audible pinging under load. Wiring damage or low‑grade fuel can mimic the same issues, so proper diagnosis matters.

How much does knock sensor replacement cost on a 2015 CR‑V?
Parts are typically modest in price, and labour is usually about an hour depending on access and workshop rates. Expect a reasonable total, with extra time if wiring repairs or diagnostic work are needed.