P0327 2021 Honda CR-V Code - Knock Sensor Circuit Low Voltage

P0327 indicates "Knock Sensor Circuit Low Voltage," meaning the knock sensor is detecting a lower-than-expected signal, which can prevent proper engine timing adjustments.

Common symptoms include reduced engine performance, poor fuel economy, the check engine light turning on, and possible engine knocking or pinging noises.

Causes can include a faulty knock sensor, damaged wiring or connectors in the knock sensor circuit, corrosion, or issues with the vehicle’s ECM (Engine Control Module).

Yes, prolonged driving with this code can lead to engine knocking, which may cause internal engine damage if not addressed promptly.

Repair steps may include inspecting and repairing damaged wiring or connectors, replacing a faulty knock sensor, or, in rare cases, reprogramming or replacing the ECM.

The cost to fix P0327 varies: replacing the knock sensor typically costs $100–$300 for parts and labor, depending on the repair facility.

You can clear the code using an OBDII scanner, but if the underlying issue remains unresolved, the code will likely return.

The knock sensor is usually located on the engine block, cylinder head, or intake manifold, often near the center of the engine.

Yes, a bad knock sensor can lead to incorrect engine timing, reduced performance, higher emissions, and possible long-term engine damage.

In most cases, reprogramming the ECM is not necessary after replacing the knock sensor, but it’s a good idea to reset the code and ensure proper sensor function.