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P0635 OBD2: Power Steering Control Circuit

P0635 OBD2: Power Steering Control Circuit

The OBD-II code P0635 refers to the Power Steering Control Circuit. This code is generally related to issues in the vehicle’s electrical system, particularly the power steering module.

What Does the P0635 Code Mean?

The P0635 code indicates that there is a malfunction in the power steering control circuit. This may result in the vehicle’s onboard computer (PCM) detecting insufficient power supply from the alternator to operate the electrical systems, which can lead to the disabling of non-essential electronics.

What Causes the P0635 Code?

Several factors can trigger the P0635 code, including:

  • Alternator failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues related to the power steering circuit

What Are the Symptoms of the P0635 Code?

Common symptoms associated with the P0635 code include:

  • Illumination of the battery/charging system warning light
  • Non-essential electronic devices being turned off, such as the radio and climate control

How Serious Is the P0635 Code?

The severity of the P0635 code is classified as moderate. While it may not pose an immediate threat to the vehicle’s safety or functionality, it is important to address it promptly to prevent further complications or damage to the electrical system.

How to Diagnose the P0635 Code

For an accurate diagnosis, it is recommended to:

  • Use a professional OBD-II scanner to confirm the P0635 code.
  • Inspect the alternator for proper functioning.
  • Examine the wiring and connectors for damage or corrosion.
  • Check the Powertrain Control Module (PCM) for any faults.

Common Repairs for the P0635 Code

Repairs may include:

  • Replacing a faulty alternator
  • Repairing or replacing damaged wiring
  • Replacing or reprogramming the Powertrain Control Module (PCM)

How Much Does It Cost to Fix the P0635 Code?

The cost to repair the P0635 code can vary widely depending on the underlying issue. On average, repairs can range from $100 to $1,000, depending on whether you need to replace the alternator or repair wiring.

Can I Fix the P0635 Code Myself?

While some basic troubleshooting can be performed at home, such as checking fuses and connections, it is advised to consult with a certified mechanic for a thorough diagnosis and repair to ensure the issue is resolved safely and effectively.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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