P0332 Fault Code

Knock Sensor 2 Circuit Low Input (Bank 2)

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0332 fault code indicates that there is a low input signal from the knock sensor 2 in Bank 2 of the engine. The knock sensor is responsible for detecting engine knock or pinging, and it sends a signal to the engine control unit (ECU) to make adjustments to ignition timing and fuel injection. When the ECU detects a low voltage signal from the knock sensor, it triggers this fault code, indicating a potential problem affecting engine performance.

What are the symptoms of the P0332 code?

When experiencing a P0332 code, you may notice:

• Reduced engine performance or power loss.
• Knocking or pinging noises from the engine.
• Illumination of the check engine light on the dashboard.
• Noticeable decrease in fuel efficiency due to improper engine tuning.

What causes the P0332 code?

Several factors can trigger the P0332 code, including:

• A faulty knock sensor that is unable to properly send voltage signals.
• Damaged wiring or connectors in the knock sensor circuit causing poor connectivity.
• Engine misfire or abnormal combustion conditions affecting sensor readings.
• Problems with the ECU that lead to incorrect processing of the sensor signals.

How to fix P0332?

To resolve the P0332 fault code, consider the following steps:

• Inspect the knock sensor and its wiring for any signs of damage, corrosion, or disconnection.
• Test the knock sensor using a multimeter to check for proper resistance and functionality.
• Repair or replace any damaged wiring or connectors in the sensor circuit.
• If necessary, replace the knock sensor itself and reset the check engine light to see if the code returns.