The P0635: Power Steering Control Circuit code indicates a problem with the power steering control circuit. This could be caused by a faulty power steering control circuit, wiring issues, or a malfunctioning power steering control unit. If left unresolved, it can affect the operation of the power steering system, leading to reduced steering assist.
P0635 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0635: Power Steering Control Circuit |
| Is it serious? | Yes, it can affect steering assist, making it difficult to steer the vehicle. |
| Possible causes | – Faulty power steering control circuit – Wiring issue – Faulty power steering control unit |
| How to diagnose? | – Test power steering control circuit – Inspect wiring and connectors – Replace power steering control unit if necessary |
P0635 Meaning
The P0635 code signifies that there is a fault in the power steering control circuit. This circuit controls the power steering system’s electrical components, and a malfunction could result in a loss of power steering assist, making steering more difficult, especially at lower speeds.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional codes related to the power steering system or electrical issues. | OBD-II Scanner |
| Test the Power Steering Control Circuit | Use a multimeter to check the voltage in the power steering control circuit and ensure the proper signals are being sent. | Multimeter |
| Inspect Wiring and Connectors | Inspect the wiring and connectors related to the power steering control circuit for damage, loose connections, or corrosion. | Flashlight, Multimeter |
| Test the Power Steering Control Unit | Test the power steering control unit to ensure it is functioning correctly and processing signals properly. | Diagnostic Tool, Multimeter |
| Replace the Power Steering Control Unit if Necessary | If the control unit is faulty and not repairable, replace it to restore proper steering functionality. | Replacement Parts, Tools |
| Clear the Code and Test | After repairs, clear the code using an OBD-II scanner and test the vehicle to ensure the power steering system is operating correctly. | OBD-II Scanner, Vehicle Manual |
Free PDF: How to choose OBD2 scanner
I’ve made you a free PDF to choose the OBD2 scanner in 5 minutes.
✅ Which OBD2 scanner is best?
✅ Which type should you get (DIY, Pro, Hobby)
✅ What is the best scanner for the exact brand/feature (e.g best for BMW)
✅ How to get a Bi-Directional tool for as cheap as $40
✅ Discount coupons for scanners
PDF is 100% free and it is designed to help you pick a scanner in less than a few minutes! Not a boring 50-page guide.
Just tell me where to send it.
