P0637 Fault Code

Power Steering Control Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0637 code indicates that there is a problem with the Power Steering Control Circuit. This code is triggered when the power steering control module detects a signal that is higher than the expected range. A properly functioning power steering system is essential for ease of steering, especially at lower speeds.

What are the symptoms of the P0637 code?

Symptoms associated with the P0637 fault code may include:

• Increased steering effort, especially at low speeds.
• Unresponsive steering wheel.
• Warning lights on the dashboard, specifically the power steering light.
• Unusual noises when turning the steering wheel.
• In some cases, the failure of the power steering system entirely.

What causes the P0637 code?

Common causes of the P0637 code include:

• Faulty power steering control module.
• Damaged wiring or connectors in the power steering circuit.
• Issues with the power steering pump or its related components.
• Low power steering fluid levels.
• Malfunctioning electric power steering assist.

How to fix P0637?

To resolve the P0637 code, consider the following steps:

• Inspect and repair any damaged wires or connectors associated with the power steering control circuit.
• Replace the power steering control module if it is confirmed to be faulty.
• Check and refill the power steering fluid to the proper level.
• Test the power steering pump functionality to ensure it is working correctly.
• Clear the fault codes and take the vehicle for a test drive to verify whether the issue is resolved.