P0329 Knock Sensor 1 Circuit Input Intermittent Bank 2 or Single Sensor

Definition: The P0329 code indicates that the knock sensor circuit for bank 2 (or a single sensor in some configurations) has an intermittent input signal. This means that the signal from the knock sensor is not consistent, which can affect engine performance and emissions.

p0329 – Knock Sensor 1 Circuit Input Intermittent Bank 2 or Single Sensor: Moderate

Common Causes

p0329 – Knock Sensor 1 Circuit Input Intermittent Bank 2 or Single Sensor

Common causes:

• Faulty knock sensor
• Wiring issues such as frayed wires or poor connections
• Corrosion in the sensor connector
• Engine mechanical problems causing vibrations that trigger false knock sensor readings

 

Common Misdiagnosis

OBD2 Code: P0329

Description: Knock Sensor 1 Circuit Input Intermittent Bank 2 or Single Sensor

Common Misdiagnosis: Replacing the knock sensor without checking for wiring issues or engine mechanical problems.

 

Common Diagnostic Steps

OBD2 Code: P0329

Description: Knock Sensor 1 Circuit Input Intermittent (Bank 2 or Single Sensor)

• Inspect the knock sensor wiring and connectors for damage or corrosion.
• Check for proper connection of the knock sensor harness to the engine control module (ECM).
• Test the knock sensor using a multimeter to ensure it is functioning correctly.
• Verify that there are no exhaust leaks near the knock sensor, as this can affect its readings.
• Examine the engine’s timing and fuel mixture settings to ensure they are within specifications.
• If applicable, update the vehicle’s ECM software to address known issues with false knock sensor codes.
• Replace the knock sensor if it is found to be faulty after testing.