WOMS
P code powertrain Medium severity

P1174 Cam Sensor Fault

The OBD2 code P1174 indicates a fault related to the camshaft position sensor, typically signaling a problem with the sensor's performance or its circuit

Definition

The OBD2 code P1174 indicates a fault related to the camshaft position sensor, typically signaling a problem with the sensor's performance or its circuit

Common causes

  • Faulty camshaft position sensor
  • Wiring issues or damaged connectors
  • Timing chain or belt problems
  • Engine control module (ECM) malfunction
  • Oil contamination affecting sensor performance
  • Incorrect camshaft timing
  • Faulty crankshaft position sensor
  • Vacuum leaks affecting engine performance

Common misdiagnoses

  • Faulty crankshaft position sensor
  • Ignition system issues
  • Fuel delivery problems
  • Vacuum leaks
  • Timing belt/chain issues
  • Engine control module (ECM) faults
  • Wiring or connector issues related to the cam sensor
  • Other sensor failures (e.g., mass airflow sensor)

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 more context and help identify related issues

  2. 2. Inspect the Camshaft Position Sensor

    Visual Inspection: Check the camshaft position sensor for any visible damage, such as cracks or corrosion

  3. 3. Connector Check

    Ensure that the electrical connector is secure and free of corrosion or dirt. Clean the connector if necessary

  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 the resistance is out of range, the sensor may be faulty

  5. 5. Voltage Test

    Check the voltage supply to the sensor with the ignition on. Ensure that the sensor is receiving the correct voltage

  6. 6. Inspect Wiring and Connectors

    Check the wiring harness for any signs of wear, fraying, or damage. Look for any loose connections or broken wires that could affect the sensor's operation

  7. 7. Check Timing Alignment

    If the camshaft timing is off, it can trigger the P1174 code. Verify that the timing belt or chain is properly aligned and in good condition

  8. 8. Scan for Engine Performance Issues

    Look for symptoms such as rough idling, stalling, or poor acceleration. These can indicate broader engine performance issues that may be related to the camshaft position sensor

  9. 9. Clear the Code and Test Drive

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

  10. 10. Replace the Camshaft Position Sensor

    If all other checks are satisfactory and the code persists, consider replacing the camshaft position sensor, as it may be faulty

  11. 11. Consult a Professional

    If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic for further diagnosis and repair.Additional Tips: - Always refer to the vehicle's service manual for specific diagnostic procedures and specifications. - Ensure that you are working in a safe environment and take necessary precautions when working on the vehicle. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the P1174 code