P0325 on a Honda CR-V
P0325 means knock Sensor 1 Circuit Malfunction (Bank 1). On the CR-V, a few causes come up far more than others.
What P0325 usually means on a CR-V
P0325 means the CR-V's knock sensor circuit has failed, so the ECU cannot hear detonation and retards timing as a precaution. You may notice slightly less power or worse economy while it is active. On Honda engines the sensor, connector, or wiring is the usual fault. It is generally a reliability nuisance rather than an emergency.
Most common causes on the CR-V
- Failed knock sensor
The sensor fails with age and heat, opening the circuit.
- Harness or connector damage
The knock-sensor wiring near the block chafes or corrodes.
- Poor ground or ECU connection
A degraded ground mimics a bad sensor.
What P0325 costs to fix on a CR-V
The knock sensor can sit beneath the intake on some CR-V engines, so labor may exceed the modest part cost. Inspect the connector and wiring first - a cheap step - before buying a sensor. Where the intake must come off, budget for the added access.
Year, engine and mileage change the answer. Start a case and Redline weighs these causes against what your car shows, then names the check that would settle it.
Other codes on the Honda CR-V
Related symptoms
Honda CR-V problems & recalls by year
Based on widely reported patterns for this model; individual causes vary by year, engine and history. Generic P0325 behavior is covered on the main P0325 page. Confirm with a scan tool before buying parts.
P0325 on your CR-V?
Every problem becomes a Case. Tell Redline what your CR-V is doing: it shows what the evidence supports, what’s still missing, and what to check next, before you approve a repair.
“Inner pad ~1 mm. Outer pad 3 mm.”
Next: check the slide pins move freely before buying parts.