Code Definition

P0330 — Knock Sensor 2 Circuit Malfunction (Bank 2)

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0330

P0330 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0330 is stored, the module has detected a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0330 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0330 code is set when the Engine Control Module (ECM) detects a malfunction in the circuit of Knock Sensor 2 on Bank 2. This sensor monitors for knock or pinging in the engine, which are types of abnormal combustion that can damage the engine. A circuit malfunction may be due to an improper signal from the sensor, possibly indicating a complete loss of signal, short circuit, or a signal that is outside the expected range. Such malfunctions can hinder the ECM's ability to accurately adjust engine timing and protect the engine from damage due to knocking.

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