OBD codes / P0325 / Honda CR-V
P0325 on a Honda CR-V
Knock Sensor 1 Circuit Malfunction (Bank 1)
K24 and 1.5T CR-V.
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 likely causes on this model
- 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 it costs 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. Get a diagnosis for your CR-V — it weighs these causes against your exact configuration and real complaint data.
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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.