The P0347 Code in the OBD-II system is a valuable resource for anyone facing engine performance issues. The P0347 code is a diagnostic trouble code that appears when there’s a problem within the Camshaft Position Sensor A Circuit Low Input (Bank 2).

This code can illuminate the check engine light on your dashboard, signaling potential issues that need attention.

Know Camshaft Sensor- The camshaft sensor, also known as the camshaft position sensor (CMP), is a crucial component in a vehicle’s engine management system. It’s responsible for monitoring the position and speed of the camshaft(s) in relation to the engine’s crankshaft. This information is essential for the engine control module (ECM) to accurately determine the timing of fuel injection and ignition spark.

What does the P0347 Code mean?

The P0347 code indicates a problem with the Camshaft Position Sensor A Circuit Low Input (Bank 2) in a vehicle’s engine. This sensor helps the engine control module (ECM) monitor the position of the camshaft to control ignition timing and fuel injection. When the ECM detects an issue with the camshaft position sensor circuit, it triggers the P0347 code and illuminates the check engine light on the dashboard.

The P0347 Code OBD-II  typically signifies issues such as a faulty camshaft position sensor, wiring or connector problems, timing chain or belt issues, or malfunctions in the ECM. Diagnosing and fixing the P0347 code may involve visual inspections, testing the sensor’s functionality, examining timing components, and using scan tools to clear codes and monitor results.

Seeking professional assistance may be necessary for accurate diagnosis and repair.

Also See:-P0346 Code OBD-II: Camshaft Position Sensor A Circuit Range/Performance (Bank 2)

What does the Camshaft Position Sensor A Circuit Low Input (Bank 2) mean?

The “Camshaft Position Sensor A Circuit Low Input (Bank 2)” code indicates that Camshaft Position Sensor A Circuit Low Input (Bank 2) is reporting a voltage signal lower than expected to the engine control module (ECM). This sensor is essential for determining the camshaft’s position, which is critical for ignition timing and fuel injection.

A low input signal may result from issues like a faulty sensor, damaged wiring, or poor connections. Prompt diagnosis and resolution of the underlying cause are necessary to maintain optimal engine performance and reliability. Ignoring this issue can lead to problems such as engine misfires, decreased fuel efficiency, and potential engine damage. Therefore, it’s crucial to address the problem promptly with the help of a qualified mechanic or automotive technician.

Also See:-P0345 Code OBD-II: Camshaft Position Sensor “A” Circuit (Bank 2)

What are the Possible Causes of the P0347 Code?

The possible causes of the P0347 code include:

• Faulty camshaft position sensor.
• Wiring or connector issues in the camshaft position sensor circuit.
• Timing chain or belt problems affecting camshaft timing.
• Engine control module (ECM) malfunction.
• Poor engine mechanical condition, such as worn timing components or engine damage.
• Intermittent electrical issues, such as corrosion or loose connections.
• Faulty crankshaft position sensor (though less common).
• Other related trouble codes present in the ECM. Identifying and addressing the specific cause is essential for effectively resolving the P0347 code and ensuring proper engine performance.

Also See:-P0344 Code OBD-II: Camshaft Position Sensor “A” Circuit Intermittent (Bank 1 or Single Sensor)

What are the Common Symptoms of the P0347 Code?

Recognizing the symptoms associated with the P0347 code can help you identify the issue early on. Common symptoms include:

• Illumination of the check engine light on the dashboard.
• Engine misfiring or hesitation during acceleration.
• Rough idling or stalling while the engine is running.
• Difficulty starting the engine, especially when cold.
• Decreased fuel efficiency.
• Reduced engine performance, including power loss.
• Increased emissions from the vehicle’s exhaust.
• Rough or erratic engine operation.

Also See:-Diagnostic Trouble Code P0343:High Input Signal Detected in the Camshaft Position Sensor Circuit

How to Diagnose & Fix the P0347 Code?

Proper diagnosis is key to effectively addressing the P0347 code. Here’s a step-by-step guide to diagnosing the issue:

• Inspect the Camshaft Position Sensor (CMP) and Wiring: Begin by locating the camshaft position sensor for Bank 1 Sensor 2 in your vehicle’s engine. Inspect the sensor and its wiring harness for any visible damage, corrosion, or loose connections.
• Test Camshaft Position Sensor: Use a multimeter or scan tool to test the camshaft position sensor’s output signals. Verify that the sensor is generating the expected signals during engine operation.
• Check Wiring and Connectors: Inspect the wiring and connectors associated with the camshaft position sensor for any damage, corrosion, or loose connections. Repair or replace any damaged components as necessary.
• Inspect Timing Components: Check the timing chain or belt and related components for wear, damage, or misalignment. Ensure proper timing according to the manufacturer’s specifications.
• Test ECM Functionality: If other causes are ruled out, consider testing or replacing the engine control module (ECM) if it’s malfunctioning.
• Clear Codes and Test: Use an OBD-II scan tool to clear the trouble codes stored in the ECM’s memory. Test drive the vehicle to confirm that the issue has been resolved and the code does not reappear.

Fixing the P0347 Code

Once the issue has been diagnosed, it’s time to address the problem and fix the P0347 code. Depending on the underlying cause, the necessary repairs or replacements may include:

• Replacing the camshaft position sensor.
• Repairing or replacing damaged wiring or connectors.
• Addressing timing chain or belt problems.
• Testing or replacing the engine control module (ECM).

Also See:-Diagnostic Trouble Code P0342: Camshaft Position Sensor Circuit Low Input

What is the Cost of Diagnosing the P0347 Code?

The cost of diagnosing the P0347 code can vary depending on several factors. If you choose to diagnose the issue yourself, the cost may be minimal, limited to purchasing or renting an OBD-II scan tool or multimeter for testing. However, if you opt to have a professional mechanic or automotive technician diagnose the problem, the cost typically involves labor charges for the diagnostic procedure. These charges can vary depending on the mechanic’s hourly rate and the complexity of the diagnostic process.

If the diagnostic procedure requires specialized equipment or tools, there may be additional charges associated with their use. Once the issue is diagnosed, the cost of fixing the problem will depend on the specific cause of the P0347 code and the necessary repairs or parts replacement. It’s advisable to obtain a written estimate from the mechanic or repair shop before proceeding with any diagnostic or repair work to ensure transparency and avoid unexpected costs.

Also See:-Diagnostic Trouble Code P0341: Camshaft Position Sensor “A” Circuit Range/Performance

Understanding Problems in Fixing the P0347 Code

Fixing the P0347 code can present several challenges due to potential underlying issues within the camshaft position sensor circuit for Bank 1 Sensor 2. Common problems associated with this code include a faulty camshaft position sensor, wiring or connector issues, timing chain or belt problems, or malfunctions in the engine control module (ECM).

Diagnosing the exact cause of the P0347 code may require thorough inspections, testing the sensor’s functionality, examining timing components, and using scan tools to clear codes and monitor results.

Addressing certain issues, such as timing chain or belt problems, may necessitate more extensive repairs or component replacement. It’s essential to accurately identify the underlying cause to ensure effective resolution of the P0347 code and prevent further issues with engine performance and reliability.

Seeking professional assistance from a qualified mechanic or automotive technician may be necessary, especially if you’re unfamiliar with diagnosing or fixing complex engine problems.

Also See:-P0340 Code Error: Camshaft Position Sensor “A” Circuit

Conclusion

Dealing with the P0347 code requires thorough diagnosis and addressing of potential underlying issues within the camshaft position sensor circuit for Bank 1 Sensor 2. From faulty sensors and wiring issues to timing chain or belt problems and ECM malfunctions, there’s a range of factors that could contribute to this trouble code.

By accurately identifying the root cause and implementing the necessary repairs or replacements, it’s possible to effectively resolve the P0347 code and ensure optimal engine performance and reliability. Prompt action is key to preventing further complications and potential damage to the vehicle. Whether tackling the issue independently or seeking assistance from a qualified mechanic, addressing the P0347 code promptly is essential for maintaining a smooth-running vehicle and peace of mind on the road.