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P1651 Ford Code - Power Steering Pressure Switch Input Malfunction

Quick Answer

The P1651 Ford code indicates a malfunction in the power steering pressure switch input. Common causes include Faulty power steering pressure switch: The switch itself may be defective and require replacement, Wiring issues: Damaged or corroded wiring connections can disrupt the signal between the pressure switch and ECM, Low power steering fluid: Insufficient fluid levels can affect the pressure readings in the system. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P1651 Ford indicates Power Steering Pressure Switch Input Malfunction.
Common causes
Common causes include Faulty power steering pressure switch: The switch itself may be defective and require replacement, Wiring issues: Damaged or corroded wiring connections can disrupt the signal between the pressure switch and ECM, Low power steering fluid: Insufficient fluid levels can affect the pressure readings in the system.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1651 Ford Description

The P1651 Ford code indicates a malfunction in the power steering pressure switch input. This switch is located in the power steering system and is responsible for monitoring the pressure of the power steering fluid. When the switch detects a problem with the pressure, it sends a signal to the engine control module (ECM), triggering the P1651 diagnostic trouble code (DTC).

OBDII Code P1651 Ford - Power Steering Pressure Switch Input Malfunction
P1651 Ford Code - Power Steering Pressure Switch Input Malfunction

Common Causes of P1651 Ford

  1. Faulty power steering pressure switch: The switch itself may be defective and require replacement.
  2. Wiring issues: Damaged or corroded wiring connections can disrupt the signal between the pressure switch and ECM.
  3. Low power steering fluid: Insufficient fluid levels can affect the pressure readings in the system.
  4. Power steering pump failure: A failing power steering pump can impact the pressure switch's operation.
  5. ECM malfunction: A problem with the engine control module can also trigger this code.

Symptoms of P1651 Ford

  1. Stiff or difficult steering: The power steering system may not provide the expected assistance, making it harder to turn the steering wheel.
  2. Whining noise: A whining noise coming from the power steering system could indicate a problem with the pressure switch.
  3. Power steering warning light: The vehicle's dashboard may illuminate a warning light indicating a power steering issue.
  4. Fluid leaks: A leaking power steering system could be a sign of a malfunctioning pressure switch.

How to Fix P1651 Ford

  1. Diagnose the issue: Use a scan tool to retrieve the trouble codes and perform a visual inspection of the power steering pressure switch and related components.
  2. Replace the power steering pressure switch: If the switch is found to be faulty, replace it with a new one following the manufacturer's recommendations.
  3. Check wiring connections: Inspect the wiring harness for any damage or corrosion and repair or replace as needed.
  4. Verify power steering fluid levels: Ensure the power steering fluid is at the correct level and top up if necessary.
  5. Clear the trouble codes: Once the repair is completed, clear the DTCs and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P1651 Ford

The typical repair costs for addressing a power steering pressure switch input malfunction can range from $150 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary depending on factors such as location, vehicle make and model, and engine type. It is advisable to inquire about local rates to get a more accurate estimate for this repair. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more affordable prices.

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Information for Specific Ford Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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