P0637 Code - Power Steering Control Circuit High
Quick Answer
The P0637 diagnostic trouble code indicates that there is a high voltage condition in the power steering control circuit. Common causes include Faulty power steering control module, Damaged wiring in the power steering control circuit, Malfunctioning power steering pump. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0637 indicates Power Steering Control Circuit High.
- Common causes
- Common causes include Faulty power steering control module, Damaged wiring in the power steering control circuit, Malfunctioning power steering pump.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code P0637 Description
The P0637 diagnostic trouble code indicates that there is a high voltage condition in the power steering control circuit. This can be caused by a variety of issues related to the power steering system, such as a faulty power steering control module, damaged wiring, or a malfunctioning power steering pump. When this code is triggered, the power steering system may not function properly, leading to difficulties in steering the vehicle. This can result in increased effort required to turn the steering wheel, especially at lower speeds. Ignoring this issue can lead to further damage to the power steering components and potentially compromise the safety and drivability of the vehicle.
Common Causes of P0637
- Faulty power steering control module
- Damaged wiring in the power steering control circuit
- Malfunctioning power steering pump
- Low power steering fluid levels
- Corroded electrical connections
Symptoms of P0637
- Stiff or heavy steering
- Steering wheel vibration
- Power steering failure
- Illuminated power steering warning light on the dashboard
How to Fix P0637
- Begin by conducting a visual inspection of the power steering control module and wiring to check for any visible damage or corrosion.
- Test the power steering control module using a multimeter to determine if it is functioning correctly.
- Check the power steering pump for any signs of damage or wear, and ensure that it is operating within specifications.
- Inspect the power steering fluid level and top up if necessary, while also checking for any leaks in the system.
- Clear the diagnostic trouble code using an OBD-II scanner and monitor the power steering system for any recurring issues.
Cost to Fix P0637
The typical repair costs for addressing a P0637 code can range from $200 to $500, depending on the specific cause of the issue and the extent of repairs needed. This estimate includes the cost of parts such as a new power steering control module or pump, as well as labor charges for diagnosis and repair. It's important to note that prices can vary based on location, vehicle make and model, and the shop's labor rates. It's recommended to obtain quotes from multiple repair shops to ensure a competitive price.
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