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P0395 Camshaft Position Sensor B Circuit High Input (Bank 2)

The OBD2 code P0395 indicates that the camshaft position sensor B circuit for bank 2 is sending a high voltage signal, which may suggest a malfunction in the sensor or its circuit

Definition

The OBD2 code P0395 indicates that the camshaft position sensor B circuit for bank 2 is sending a high voltage signal, which may suggest a malfunction in the sensor or its circuit

Common causes

  • Faulty camshaft position sensor
  • Damaged wiring or connectors
  • Poor electrical connections
  • Faulty engine control module (ECM)
  • Timing chain or belt issues
  • Oil contamination or low oil levels
  • Faulty crankshaft position sensor
  • Mechanical issues with the camshaft or timing components

Common misdiagnoses

  • Faulty camshaft position sensor
  • Faulty crankshaft position sensor
  • Wiring issues or shorts in the harness
  • Engine control module (ECM) failure
  • Timing chain or belt issues
  • Oil flow problems affecting sensor operation
  • Incorrectly installed or damaged camshaft
  • Faulty ignition system components
  • Vacuum leaks affecting engine performance
  • Fuel delivery issues

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. This can provide additional context and help identify related issues

  2. 2. Inspect the Camshaft Position Sensor

    Visual Inspection: Check the sensor for any physical damage, such as cracks or corrosion

  3. 3. Connector Check

    Ensure that the electrical connector is secure and free of corrosion or dirt. Look for bent pins or damaged wiring

  4. 4. Test the Camshaft Position Sensor

    Resistance Test: Use a multimeter to check the resistance of the sensor according to the manufacturer’s specifications. If it’s out of range, the sensor may need to be replaced

  5. 5. Voltage Test

    With the ignition on (engine off), check for the correct voltage at the sensor connector. Compare it to the specifications in the service manual

  6. 6. Inspect Wiring and Connectors

    Wiring Inspection: Look for any frayed, damaged, or shorted wires in the circuit leading to the sensor. Pay special attention to areas where the wiring may be exposed to heat or abrasion

  7. 7. Ground Check

    Ensure that the ground connection for the sensor is solid and free of corrosion

  8. 8. Check the Engine Control Module (ECM)

    ECM Functionality: In rare cases, the ECM may be faulty. Check for any software updates or recalls related to the ECM

  9. 9. Reprogramming

    If applicable, consider reprogramming or resetting the ECM

  10. 10. Inspect Timing Components

    Timing Chain/Belt: If the timing chain or belt is worn or has jumped a tooth, it can affect the camshaft position. Inspect these components for wear or damage

  11. 11. VVT System

    If your vehicle has a Variable Valve Timing (VVT) system, ensure that it is functioning correctly, as issues here can also affect camshaft position readings

  12. 12. Clear Codes and Test Drive

    After performing the above checks and repairs, clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  13. 13. Seek Professional Help

    If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic who has the tools and experience to diagnose more complex issues. By following these steps, you should be able to identify the cause of the P0395 code and take appropriate action to resolve it