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P0353 Ignition Coil C Primary/Secondary Circuit Malfunction

The OBD2 code P0353 indicates a malfunction in the ignition coil C's primary or secondary circuit, which can lead to issues with engine performance, such as misfires or difficulty starting

Definition

The OBD2 code P0353 indicates a malfunction in the ignition coil C's primary or secondary circuit, which can lead to issues with engine performance, such as misfires or difficulty starting

Common causes

  • Faulty ignition coil C
  • Damaged wiring or connectors
  • Faulty ignition control module
  • Poor ground connection
  • Short circuit in the ignition coil circuit
  • Open circuit in the ignition coil circuit
  • Faulty engine control module (ECM)
  • Corroded terminals or connectors

Common misdiagnoses

  • Faulty ignition coil
  • Bad spark plugs
  • Ignition control module failure
  • Wiring issues or shorts
  • Engine control unit (ECU) malfunction
  • Fuel system problems
  • Vacuum leaks
  • Timing issues
  • Crankshaft or camshaft position sensor failure
  • Battery or charging system 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 more context for the issue

  2. 2. Visual Inspection

    Inspect the ignition coil for physical damage, such as cracks or corrosion

  3. 3. Check the wiring and connectors leading to the ignition coil for signs of wear, fraying, or loose connections

  4. 4. Ensure that the coil is properly seated in the engine

  5. 5. Test the Ignition Coil

    Swap the ignition coil with another cylinder (if applicable) to see if the code follows the coil. If it does, the coil is likely faulty

  6. 6. Use a multimeter to test the resistance of the ignition coil. Compare the readings to the specifications in the vehicle’s service manual

  7. 7. Check the Power and Ground Supply

    Verify that the ignition coil is receiving the correct voltage. Use a multimeter to check for power at the coil connector while the ignition is on

  8. 8. Check the ground connection for the ignition coil to ensure it is secure and functioning properly

  9. 9. Inspect the ECM

    If the ignition coil and wiring are in good condition, the issue may lie with the engine control module (ECM). Check for any signs of damage or corrosion

  10. 10. Ensure that the ECM is properly programmed and functioning. This may require specialized diagnostic equipment

  11. 11. Check for Short Circuits or Open Circuits

    Use a multimeter to check for continuity in the wiring harness leading to the ignition coil. Look for any shorts to ground or open circuits

  12. 12. Examine Related Components

    Inspect other components in the ignition system, such as spark plugs and ignition wires, for wear or damage. Faulty spark plugs or wires can cause misfires and trigger the P0353 code

  13. 13. Clear the Code and Test Drive

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

  14. 14. Consult a Professional

    If the issue persists after performing these steps, it may be necessary to consult a professional mechanic for further diagnosis. By following these troubleshooting steps, you should be able to identify and resolve the issue causing the P0353 code