P0392 Fault Code

Camshaft Position Sensor B Circuit Low Input (Bank 2)

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

The P0392 code indicates a problem with the Camshaft Position Sensor B Circuit for Bank 2. This sensor is crucial for the engine's timing and overall performance. When the Engine Control Module (ECM) detects a low input signal from this sensor, it triggers the code.

What are the symptoms of the P0392 code?

Common symptoms that may accompany a P0392 code include:

• Rough idle
• Decreased engine performance
• Stalling or difficulty starting the engine
• Illuminated Check Engine Light
• Unusual engine noises, particularly if timing issues are present.

What causes the P0392 code?

There can be several causes for a P0392 code, including:

• Faulty Camshaft Position Sensor
• Damaged wiring or connector for the sensor
• Poor electrical connections
• A malfunctioning Engine Control Module (ECM)
• Timing chain or belt issues that affect sensor operation.

How to fix P0392?

To resolve the P0392 code, consider the following steps:

• Check the Camshaft Position Sensor and replace it if faulty.
• Inspect the wiring and connectors for damage, corrosion, or loose connections.
• Verify that the timing chain or belt is properly aligned and in good condition.
• Use an oscilloscope to monitor the signal from the sensor to ensure it falls within specifications.