P0349 Camshaft Position Sensor A Circuit Intermittent Bank 2

Definition: The P0349 code indicates that the camshaft position sensor ‘A’ circuit for bank 2 is experiencing an intermittent signal. This means that the engine control module (ECM) is detecting a problem with the electrical circuit of the camshaft position sensor, which can affect engine timing and performance.

p0349 – Camshaft Position Sensor A Circuit Intermittent Bank 2

Typical Severity: Moderate

Common Causes

P0349 – Camshaft Position Sensor A Circuit Intermittent Bank 2

• Common causes:
  1. Faulty camshaft position sensor
  2. Wiring issues such as frayed wires or poor connections
  3. Corrosion in the sensor connector
  4. Engine timing issues
  5. ECU software needs updating

 

Common Misdiagnosis

OBD2 Code: P0349

Description: Camshaft Position Sensor A Circuit Intermittent (Bank 2)

Common Misdiagnosis: Replacing the camshaft position sensor without checking for wiring issues or problems with the timing chain/belt.

 

Common Diagnostic Steps

OBD2 Code: P0349

Description: Camshaft Position Sensor A Circuit Intermittent Bank 2

• Check for any technical service bulletins (TSBs) related to the issue.
• Visually inspect the camshaft position sensor and its wiring for damage or disconnection.
• Use a scan tool to check for other codes that may indicate an underlying issue.
• Test the camshaft position sensor using a multimeter to ensure it is functioning correctly.
• Inspect the connector pins for corrosion or bent pins, ensuring a good connection.
• Check the timing chain/belt for proper alignment and wear, as misalignment can cause intermittent signals.
• If applicable, update the vehicle’s software/firmware to address known issues with sensor readings.
• If necessary, replace the camshaft position sensor with a new one and clear all codes before retesting.