What P0325 means
Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
Common causes (general)
Before spending money on parts, verify the code with a scan tool and read freeze frame data. Freeze frame captures every sensor value at the moment the code set — this is often enough to figure out the root cause without further testing.
Manufacturer-specific descriptions
Different manufacturers use this code for slightly different failure modes. Here's what your specific make means by P0325:
| BMW | Knock Sensor 1 Circuit |
| FORD | Knock Sensor 1 Circuit Malfunction |
| HONDA | Knock Sensor Circuit Malfunction |
| MITSUBISHI | Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor); Detonation sensor |
| NISSAN | Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor) |
| VOLKSWAGEN | PCM Knock Sensor Circuit |
Read this code on your own car
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