I have a 1996 Q45 with a code P0325 (knock sensor mulfunction). I had both knock sensors and the harness connecting the sensors to ECM replaced and erased the code.

Mar 30, 2024 · The OBDII trouble code P0325 - Knock Sensor Malfunction (Sensor 1, Bank 1) indicates an issue with the knock sensor in the engine. The knock sensor is essentially a microphone that is …

The P0325 code indicates a problem with the Knock Sensor Circuit in Bank 1 of the engine. The knock sensor is responsible for detecting abnormal vibrations or knocking in the engine, which can be …

Learn about the P0325 trouble code, its causes like faulty knock sensors or wiring issues, and how to fix it with AutoZone.

Oct 28, 2020 · If it doesn’t see a corresponding knock signal, it sets a P0325. Or, the ECM may supply a bias voltage to the knock sensor and check for a voltage drop on the circuit. As mentioned above, …

Oct 5, 2021 · Advance Auto Parts looks at OBD-II trouble code P0325: Knock Sensor Circuit Malfunction. We'll cover what it means, symptoms, and common fixes.

Mar 16, 2022 · Check engine light code P0325 means Knock Sensor 1 Circuit Malfunction (Bank 1). Find out how to fix it in this article!

Nov 5, 2025 · When the EOBD/OBD-II error P0325 (Knock Sensor 1 Circuit Malfunction – Bank 1) is triggered, it means the ECM has received no signal or detected an unexpected voltage from the …

Code P0325 indicates that the readings from the #1 Knock Sensor circuit are too low, too high, erratic or in some way outside of its operational window and malfunctioning.

Dec 16, 2024 · Here's everything you need to know to understand the check engine error code P0325, which is triggered when the engine control module detects an abnormal signal or lack of signal a …