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P0695 Auxiliary Emission Control Circuit Short to Ground

The OBD2 code P0695 indicates a short circuit to ground in the auxiliary emission control circuit, which can affect the operation of emission control systems

Definition

The OBD2 code P0695 indicates a short circuit to ground in the auxiliary emission control circuit, which can affect the operation of emission control systems

Common causes

  • Damaged wiring or connectors
  • Short circuit in the auxiliary emission control circuit
  • Faulty auxiliary emission control module
  • Corroded connectors
  • Grounding issues
  • Malfunctioning sensors related to the emission control system

Common misdiagnoses

  • Faulty Engine Control Module (ECM)
  • Shorted wiring or connectors
  • Faulty auxiliary emission control device
  • Incorrectly diagnosed sensor issues
  • Battery or charging system problems
  • Faulty ground connections
  • Issues with the vehicle's computer programming or updates

Troubleshooting steps

  1. 1. Check the Vehicle's Battery and Charging System

  2. 2. Ensure the battery is fully charged and in good condition

  3. 3. Check the alternator and charging system for proper operation

  4. 4. Inspect Wiring and Connectors

  5. 5. Visually inspect the wiring and connectors associated with the auxiliary emission control circuit

  6. 6. Look for signs of damage, corrosion, fraying, or loose connections

  7. 7. Pay special attention to areas where the wiring may be exposed to heat or abrasion

  8. 8. Test for Shorts to Ground

  9. 9. Use a multimeter to check for continuity between the circuit and ground

  10. 10. Disconnect the battery and then check the affected circuit for any unintended connections to ground

  11. 11. Check the Auxiliary Emission Control Components

  12. 12. Identify the specific components related to the auxiliary emission control system (e.g., sensors, valves)

  13. 13. Test these components for proper operation according to the manufacturer's specifications

  14. 14. Inspect the Engine Control Module (ECM)

  15. 15. Check for any signs of damage or corrosion on the ECM connectors

  16. 16. If necessary, perform a reset of the ECM by disconnecting the battery for a few minutes

  17. 17. Scan for Additional Codes

  18. 18. Use an OBD-II scanner to check for any other trouble codes that may be present

  19. 19. Address any other codes that could be related to the P0695 code

  20. 20. Perform a Visual Inspection of the Emission Control System

  21. 21. Inspect the entire emission control system for any obvious issues, such as leaks or disconnected hoses

  22. 22. Consult Technical Service Bulletins (TSBs)

  23. 23. Check for any TSBs related to the P0695 code for your specific vehicle make and model. Manufacturers may have known fixes or updates

  24. 24. Clear the Code and Test Drive

  25. 25. After performing repairs, clear the code using an OBD-II scanner and take the vehicle for a test drive to see if the code returns

  26. 26. Seek Professional Help

  27. 27. If the issue persists after following these steps, it may be necessary to consult a professional mechanic or technician for further diagnosis. By following these steps, you should be able to identify and resolve the issue causing the P0695 code. Always refer to the vehicle's service manual for specific procedures and specifications related to your vehicle