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P codepowertrainMedium severity

P1368Ignition Spare

The OBD2 code P1368 indicates a problem with the ignition system, specifically related to the ignition spare or backup system, which may affect engine performance or starting

Definition

The OBD2 code P1368 indicates a problem with the ignition system, specifically related to the ignition spare or backup system, which may affect engine performance or starting

Common causes

  • Faulty ignition coil
  • Bad spark plugs
  • Ignition control module failure
  • Wiring issues or shorts in the ignition system
  • Faulty crankshaft or camshaft position sensors
  • Timing belt or chain issues
  • Engine control module (ECM) malfunction
  • Fuel delivery problems

Common misdiagnoses

  • Faulty ignition coil
  • Bad spark plugs
  • Incorrect timing
  • Faulty camshaft or crankshaft position sensors
  • Wiring issues or shorts
  • Engine control module (ECM) problems
  • Fuel delivery issues
  • Vacuum leaks

Troubleshooting steps

  1. 1.Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. Addressing all related codes can help pinpoint the issue

  2. 2.Inspect Ignition Components

  3. 3.Spark Plugs

    Check the condition of the spark plugs. Worn or fouled plugs can cause ignition issues

  4. 4.Ignition Coils

    Inspect the ignition coils for signs of damage or wear. Test their resistance and functionality

  5. 5.Wiring and Connectors

    Look for damaged wiring, loose connections, or corrosion in the ignition system wiring and connectors

  6. 6.Examine the Timing System

  7. 7.Timing Belt/Chain

    Ensure that the timing belt or chain is in good condition and properly aligned. A misaligned timing can lead to ignition timing issues

  8. 8.Camshaft and Crankshaft Sensors

    Check the sensors for proper operation. Faulty sensors can lead to incorrect timing signals

  9. 9.Test the Ignition Control Module (ICM)

    If your vehicle is equipped with an ignition control module, test it for proper operation. A malfunctioning ICM can cause ignition problems

  10. 10.Check Fuel System

    Ensure that the fuel system is functioning correctly. A lack of fuel or improper fuel delivery can mimic ignition issues

  11. 11.Inspect the Battery and Charging System

    A weak battery or charging system can lead to poor ignition performance. Check the battery voltage and the alternator's output

  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.Consult Repair Manual

    If the issue persists, refer to the vehicle's repair manual for specific diagnostic procedures related to the P1368 code

  14. 14.Seek Professional Help

    If you are unable to diagnose or fix the issue, consider taking the vehicle to a qualified mechanic or automotive technician for further diagnosis. By following these steps, you should be able to identify and resolve the issue related to the P1368 code