Error Code P0635: What It Means & What To Do?

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Is your vehicle’s power steering giving you tough time? There occur some problems with the power steering control circuit when it faces obd error code P0635. Your vehicle’s Check Engine Light also known as CEL will start flashing when it faces this error code.

Let’s have a deeper look into this problem with your vehicle’s power steering control circuit in the subsequent sections.

OBD error code P0635 indicates that there is some problem with the power steering control circuit of your vehicle. Your vehicle’s powertrain control module will detect this error code. This might become a potential host for many steering issues with your vehicle.

What causes this problem with the Power Steering Control Circuit?

• Malfunctioning power steering pressure switch
• Damaged power steering position switch
• Defective power steering control
• Faulty or lose control module ground strap
• Damaged or faulty ground wire
• Lack of steering fluid level or leak
• Problems with the connectors and fuses, such as blown out fuses, corroded connectors
• Damaged and defective related wiring systems
• Faulty powertrain control module (PCM)

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It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0635 here:

Common Symptoms

• Steering turning stiff and erratic
• Squeaky steering noises on turning
• Illumination of check engine light

Here are some ways with the help of which you will be able to correct the OBD Code P0635:

• Repair and replace the power steering pressure or position sensor
• Repair or replace ground wires or ground straps in the control module
• Repair or replace electrical components in the system
• Undergo CAN bus replacement if necessary

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Here are some steps which you should follow in order to diagnose this P0635 fault code:

• To start with the diagnosis, you will need to research the technical service bulletins, also known as the TSB’s. Make sure TSB’s are specific to your vehicle make and model. Believe us this will help you save a lot of time and help you achieve right troubleshooting goals.
• Once you get hold of the TSB’s next step is to look for the power steering fluid level and check for any leaks and damages. Keep one thing in mind that the right fluid level plays a crucial role in the circuit functioning.
• Next, check all the parts within the circuit visually to check for any wiring defects (short, open, bare wires).
• After this, next step is to check and make sure that all the connectors are operating well, i.e. they are not damaged or corroded. This will also include checking for the Controller Area Network, abbreviated as CAN for any wiring damage.

Additional Steps

Additional steps are particular to every vehicle make and model. To perform these steps you will need a digital multimeter and particular technical references for the vehicle.

Checking Voltage

Keep in mind that the voltage requirements will also vary depending upon your specific make and model year. Also, power steering controllers, pressure switches and position sensors have different voltage requirements to function efficiently. In case you discover lack of absence of power source or ground then continue your test to check the integrity of the wiring, connectors and other related components. Keep in mind that the tests should be performed while removing the power from the circuit and normal readings for the wiring and connectors. It should be 0 ohms of resistance. In case you come across resistance or no continuity, be sure that it is an indication of faulty wiring that is open or shorted and must be repaired or replaced

Common Mistakes When Diagnosing the P0635 Code

To avoid any misdiagnosis be sure of the fact that if you receive multiple trouble code then focus on the ones first that are related to CAN and after that move on to others. Also, make use of a specialized scanner to highlight the control module issues accurately and efficiently.