P0349 Fault Code

Camshaft Position Sensor A Circuit Intermittent (Bank 2)

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

The P0349 fault code indicates an intermittent issue with the Camshaft Position Sensor A Circuit for Bank 2. This sensor is crucial for the engine's timing and performance, as it monitors the position of the camshaft to synchronize with the crankshaft. When the signal from this sensor is unstable or fails temporarily, it can lead to various engine performance issues.

• The sensor plays a vital role in fuel injection timing and ignition.
• Problems can arise due to wiring issues or sensor malfunctions.
• Regular diagnostics are necessary to identify the precise cause of the intermittent fault.

What are the symptoms of the P0349 code?

Common symptoms that may accompany the P0349 fault code include:

• Rough engine idle or stalling.
• Poor acceleration or engine misfires.
• Check Engine Light illumination on the dashboard.
• Reduced fuel efficiency or erratic engine performance.
• Difficulty starting the engine in some cases.

What causes the P0349 code?

Several factors may contribute to the P0349 code being triggered:

• Damaged or frayed wiring leading to bad connections.
• Faulty camshaft position sensor that requires replacement.
• Problems with the Engine Control Module (ECM) affecting signal processing.
• Oil contamination within the sensor or surrounding components.
• Engine timing issues that affect sensor readings.

How to fix P0349?

Addressing the P0349 code typically involves a systematic diagnostic process:

• Inspect the wiring and connectors for damage or corrosion and repair or replace as necessary.
• Test the camshaft position sensor with a multimeter to confirm its functionality.
• Replace the sensor if it is determined to be faulty.
• Clear the fault code and conduct a road test to ensure the issue is resolved.
• If the code persists, further inspection of the ECM may be required.