P0325 Honda Hr-V
Knock Sensor 1 Circuit Malfunction (Bank 1) · Powertrain Code · Medium · Repair: Moderate
What is P0325?
The knock sensor 1 on bank 1 is not functioning properly. The ECM cannot detect engine knock/detonation.
When the Honda Hr-V triggers code P0325 (knock sensor 1 circuit malfunction (bank 1)), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Honda Hr-V.
This repair is rated moderate, meaning some experience and specialty tools required.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Honda Hr-V.
Common Causes on Honda Hr-V
- Failed knock sensor (heat-degraded over time)
- Corroded knock sensor wiring connector
- Loose knock sensor mounting bolt (must be torqued to spec)
- Engine block crack or coolant leak near knock sensor (rare)
Symptoms
- Check Engine Light on
- Reduced engine performance (PCM retards timing as precaution)
- Slightly lower fuel economy
- Engine may feel sluggish on acceleration
Notes for Honda Hr-V
Knock sensor replacement requires removing the intake manifold on most Honda 4-cylinder engines — budget 2-3 hours for the job.