WOMS
B code body Medium severity

B2252 Parklamp Output Relay Dirver Short to Battery

The OBD2 code B2252 indicates a malfunction in the park lamp output relay driver, specifically that there is a short circuit to the battery, which can cause the park lamps to remain on or not function properly

Definition

The OBD2 code B2252 indicates a malfunction in the park lamp output relay driver, specifically that there is a short circuit to the battery, which can cause the park lamps to remain on or not function properly

Common causes

  • Shorted wiring or connectors
  • Faulty park lamp output relay
  • Malfunctioning body control module (BCM)
  • Corroded or damaged electrical connections
  • Incorrectly installed aftermarket accessories
  • Grounding issues
  • Faulty park lamp bulbs or sockets

Common misdiagnoses

  • Faulty park lamp bulbs
  • Defective park lamp switch
  • Wiring harness issues
  • Shorted wiring or connectors
  • Malfunctioning body control module (BCM)
  • Incorrectly installed aftermarket lighting
  • Grounding issues
  • Faulty relay or fuse
  • Other electrical component failures in the lighting circuit

Troubleshooting steps

  1. 1. Understand the Code

    B2252 typically indicates that the park lamp output relay driver circuit is shorted to battery voltage. This could be due to a wiring issue, a faulty relay, or a problem with the control module

  2. 2. Visual Inspection

    Wiring and Connectors: Inspect the wiring harness and connectors related to the park lamp circuit for any signs of damage, corrosion, or loose connections

  3. 3. Relay Condition

    Check the park lamp relay for any physical damage or signs of overheating

  4. 4. Check the Relay

    Test the Relay: Remove the park lamp relay and test it using a multimeter. Check for continuity and ensure it operates correctly when energized

  5. 5. Replace if Necessary

    If the relay is faulty, replace it and clear the code to see if it returns

  6. 6. Inspect the Circuit

    Continuity Test: Use a multimeter to check for continuity in the park lamp circuit. Look for any shorts to ground or battery voltage

  7. 7. Resistance Check

    Measure the resistance in the circuit to ensure it is within specifications. A low resistance reading may indicate a short

  8. 8. Check the Control Module

    Scan Tool: Use an OBD-II scanner to check for any additional codes that may provide more context

  9. 9. Module Functionality

    If the relay and wiring are intact, the issue may lie within the control module. Check for software updates or known issues with the module

  10. 10. Inspect Related Components

    Park Lamps: Check the park lamps themselves for any issues. A shorted bulb can sometimes cause this code

  11. 11. Fuses

    Inspect the fuses related to the park lamp circuit. A blown fuse may indicate a short somewhere in the circuit

  12. 12. Clear Codes and Test Drive

    After performing the above checks and repairs, clear the trouble codes using a scan tool

  13. 13. Take the vehicle for a test drive to see if the code returns

  14. 14. Professional Help

    If you are unable to resolve the issue after these steps, consider seeking help from a professional mechanic or automotive technician who has experience with electrical systems. By following these steps, you should be able to identify and resolve the issue related to the B2252 code. Always ensure safety precautions are taken when working with electrical systems in vehicles