WOMS
C code chassis Medium severity

C1926 VAPS Solenoid Actuator Return Circuit Open

The OBD2 code C1926 indicates that there is an open circuit in the VAPS (Variable Assist Power Steering) solenoid actuator return circuit, which means the system is not receiving the expected electrical signal back from...

Definition

The OBD2 code C1926 indicates that there is an open circuit in the VAPS (Variable Assist Power Steering) solenoid actuator return circuit, which means the system is not receiving the expected electrical signal back from the actuator

Common causes

  • Open circuit in the wiring
  • Faulty VAPS solenoid actuator
  • Poor electrical connections or corroded terminals
  • Damaged or frayed wiring harness
  • Failed powertrain control module (PCM)
  • Grounding issues
  • Short circuit in the circuit path

Common misdiagnoses

  • Faulty VAPS solenoid actuator
  • Wiring issues or damaged connectors
  • Faulty control module
  • Incorrectly calibrated steering system
  • Power supply issues
  • Grounding problems
  • Faulty steering angle sensor

Troubleshooting steps

  1. 1. Check the Vehicle's Service Manual

    Always refer to the specific service manual for your vehicle to understand the wiring diagrams and specifications related to the VAPS system

  2. 2. Visual Inspection

  3. 3. Inspect the wiring harness and connectors associated with the VAPS solenoid actuator for any signs of damage, corrosion, or loose connections

  4. 4. Look for frayed wires, broken connectors, or any signs of wear that could lead to an open circuit

  5. 5. Check the VAPS Solenoid Actuator

  6. 6. If accessible, test the VAPS solenoid actuator for proper operation. This may involve checking the resistance of the actuator coil with a multimeter

  7. 7. Compare the resistance readings to the specifications in the service manual

  8. 8. Test the Circuit

  9. 9. Use a multimeter to check for continuity in the return circuit. Disconnect the actuator and test the wiring from the actuator connector back to the control module

  10. 10. If there is no continuity, trace the wiring for breaks or shorts

  11. 11. Inspect the Control Module

  12. 12. If the wiring and actuator are in good condition, the issue may lie with the control module. Check for any fault codes related to the control module itself

  13. 13. Ensure that the control module is receiving the correct power and ground signals

  14. 14. Check for Other Codes

  15. 15. Scan the vehicle for any additional trouble codes that may provide more context or indicate related issues

  16. 16. Clear Codes and Test Drive

  17. 17. After performing repairs or adjustments, clear the trouble codes and take the vehicle for a test drive to see if the code returns

  18. 18. Professional Diagnosis

  19. 19. If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician who has experience with your specific vehicle make and model. By following these troubleshooting steps, you should be able to identify the cause of the C1926 code and take appropriate action to resolve the issue