Engine-CodesFord – P0703 1999 Ford F150

P0703 1999 Ford F150 Code - Brake Switch Performance

Quick Answer

The P0703 diagnostic trouble code (DTC) for a 1999 Ford F150 refers to a potential issue with the Brake Switch Performance. Common causes include Faulty brake switch, Loose or damaged wiring connected to the brake switch, Corrosion or dirt buildup affecting the brake switch's performance. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0703 1999 Ford F150 indicates Brake Switch Performance.
Common causes
Common causes include Faulty brake switch, Loose or damaged wiring connected to the brake switch, Corrosion or dirt buildup affecting the brake switch's performance.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0703 1999 Ford F150 Description

The P0703 diagnostic trouble code (DTC) for a 1999 Ford F150 refers to a potential issue with the Brake Switch Performance. The brake switch is a crucial component in the vehicle's braking system, as it is responsible for detecting when the brake pedal is pressed and sending a signal to the vehicle's onboard computer. This signal is used to disengage cruise control, activate brake lights, and assist with other safety features. When the brake switch malfunctions or fails to operate correctly, it can have significant implications for the vehicle's performance and safety.

OBDII Code P0703 1999 Ford F150 - Brake Switch Performance
P0703 1999 Ford F150 Code - Brake Switch Performance

Common Causes of P0703 1999 Ford F150

  1. Faulty brake switch.
  2. Loose or damaged wiring connected to the brake switch.
  3. Corrosion or dirt buildup affecting the brake switch's performance.
  4. Malfunctioning brake pedal position sensor.
  5. Issues with the vehicle's onboard computer.

Symptoms of P0703 1999 Ford F150

  1. Cruise control not disengaging when the brake pedal is pressed.
  2. Brake lights not illuminating when the brake pedal is pressed.
  3. Difficulty shifting gears in automatic transmission vehicles.
  4. Vehicle not starting.

How to Fix P0703 1999 Ford F150

  1. Begin by locating the brake switch, typically located near the top of the brake pedal.
  2. Disconnect the wiring harness connected to the brake switch.
  3. Remove the old brake switch and replace it with a new one.
  4. Reconnect the wiring harness and ensure it is securely in place.
  5. Clear the DTC with an OBD-II scanner and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0703 1999 Ford F150

The cost of repairing a P0703 code for a 1999 Ford F150 can vary depending on the specific cause of the issue and the cost of parts and labor in your area. On average, you can expect to pay between $100 to $200 for a new brake switch, not including labor costs. The total repair cost, including parts and labor, could range from $150 to $300. However, it's essential to check with local auto repair shops for a more accurate estimate based on your location and vehicle specifications. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to inquire about these factors when obtaining a repair quote.

Tech Notes for P0703 1999 Ford F150

Check if the stop light works with when the brake pedal is depressed if the brake lights are inoperative, replace or adjust the Brake Pedal Position (BPP) Switch (Stop Lamp Switch).

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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.

Frequently Asked Questions about P0703 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P0703 in a 1999 Ford F150?

- Common symptoms include issues with the brake lights, cruise control not working, and possible problems shifting out of park.

2. What does the OBDII code P0703 Brake Switch Performance mean for a 1999 Ford F150?

- This code indicates that there is a malfunction with the brake switch, which is responsible for activating the brake lights and allowing the vehicle to shift out of park.

3. What are the possible causes of OBDII code P0703 in a 1999 Ford F150?

- The common causes of this code include a faulty brake switch, wiring issues, or a misadjusted brake switch.

4. How can I diagnose the OBDII code P0703 on my 1999 Ford F150?

- You can diagnose this code by checking the brake lights operation, testing the brake switch for continuity, and inspecting the wiring for any damage.

5. Can I still drive my 1999 Ford F150 with the OBDII code P0703 present?

- It is not recommended to drive the vehicle with this code, as it can affect the proper operation of the brake lights and potentially lead to safety issues.

6. How do I repair the OBDII code P0703 Brake Switch Performance on my 1999 Ford F150?

- The repair typically involves replacing the faulty brake switch, adjusting the switch if necessary, or repairing any damaged wiring.

7. Are there any DIY tips for fixing the OBDII code P0703 on a 1999 Ford F150?

- DIY tips include checking the brake switch adjustment, inspecting the wiring for any visible damage, and replacing the brake switch if needed.

8. Will resetting the OBDII code P0703 on my 1999 Ford F150 make it go away permanently?

- Resetting the code may clear it temporarily, but if the underlying issue with the brake switch is not addressed, the code is likely to return.

9. Can a malfunctioning brake switch cause other problems in a 1999 Ford F150 besides triggering the P0703 code?

- Yes, a malfunctioning brake switch can also affect the operation of the cruise control system and proper shifting out of park in the vehicle.

10. How much does it typically cost to repair the OBDII code P0703 Brake Switch Performance on a 1999 Ford F150?

- The cost of repair can vary depending on the root cause of the issue, but it may range from around $50 for a DIY fix to a few hundred dollars if professional help is needed.

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