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Engine-Codes – Suzuki – P0703 Suzuki

P0703 Suzuki Code - Brake Switch Circuit Malfunction

Quick Answer

The P0703 code for Suzuki vehicles indicates a Brake Switch Circuit Malfunction. Common causes include Faulty brake light switch, Damaged wiring or connectors, Misadjusted brake pedal position sensor. 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 Suzuki indicates Brake Switch Circuit Malfunction.
Common causes
Common causes include Faulty brake light switch, Damaged wiring or connectors, Misadjusted brake pedal position sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0703 Suzuki Description

The P0703 code for Suzuki vehicles indicates a Brake Switch Circuit Malfunction. This means that there is a problem with the brake light switch, which is responsible for activating the brake lights when the brake pedal is pressed. The brake light switch also plays a crucial role in disengaging the cruise control system, so a malfunction can have various consequences on the vehicle's performance.

OBDII Code P0703 Suzuki - Brake Switch Circuit Malfunction
P0703 Suzuki Code - Brake Switch Circuit Malfunction

Common Causes of P0703 Suzuki

  1. Faulty brake light switch
  2. Damaged wiring or connectors
  3. Misadjusted brake pedal position sensor
  4. Corrosion or dirt buildup affecting switch operation
  5. Electrical issues in the brake light circuit

Symptoms of P0703 Suzuki

  1. Brake lights not working properly
  2. Cruise control system not disengaging when the brake pedal is pressed
  3. Difficulty shifting out of park
  4. Check engine light illuminated
  5. ABS warning light may come on

How to Fix P0703 Suzuki

  1. Diagnose the issue by checking the brake light switch for proper operation and inspecting the wiring and connectors for any damage.
  2. Replace the brake light switch if it is found to be faulty. Adjust or replace the brake pedal position sensor if necessary.
  3. Clean any corrosion or dirt buildup that may be affecting the switch operation.
  4. Clear the diagnostic code and test the vehicle to ensure that the issue has been resolved.
  5. If the problem persists, further electrical troubleshooting may be required to identify the root cause of the malfunction.

Cost to Fix P0703 Suzuki

The cost of repairing a P0703 code can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the parts for this repair can cost between $50 and $150, while labor costs can range from $80 to $150 per hour. In total, the repair for this code could cost anywhere from $150 to $400, but prices can vary based on location and the vehicle's make and model. It's recommended to consult with a professional mechanic for a more accurate estimate based on the specific circumstances.

What does this mean?

Tech Notes for P0703 Suzuki

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 Suzuki Code

1. What are the common symptoms of OBDII code P0703 Suzuki (Brake Switch Circuit Malfunction)?

- Common symptoms include the inability to shift out of park, the brake lights not working, and the check engine light being illuminated.

2. What are the possible causes of OBDII code P0703 Suzuki?

- The possible causes include a faulty brake light switch, damaged wiring or connectors in the brake switch circuit, or a problem with the transmission range sensor.

3. How can I diagnose the Brake Switch Circuit Malfunction related to OBDII code P0703 Suzuki?

- You can start by checking the brake lights to see if they are working when the brake pedal is pressed. Then, inspect the brake light switch and related wiring for any visible damage or corrosion.

4. Can a faulty brake switch cause other issues besides triggering the OBDII code P0703?

- Yes, a faulty brake switch can also lead to issues like cruise control not working, the vehicle not starting, or the transmission not shifting correctly.

5. How can I repair a Brake Switch Circuit Malfunction causing OBDII code P0703 in my Suzuki?

- The repair typically involves replacing the faulty brake light switch or repairing any damaged wiring or connectors in the brake switch circuit.

6. Is it safe to continue driving my Suzuki with OBDII code P0703 (Brake Switch Circuit Malfunction)?

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

7. Can I reset the OBDII code P0703 in my Suzuki after fixing the Brake Switch Circuit Malfunction issue?

- Yes, after fixing the underlying issue causing the code, you can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes.

8. How much does it typically cost to repair the Brake Switch Circuit Malfunction associated with OBDII code P0703 in a Suzuki?

- The cost can vary depending on the exact cause of the issue, but replacing a brake light switch or repairing wiring usually ranges from $50 to $200.

9. Will the OBDII code P0703 Suzuki (Brake Switch Circuit Malfunction) cause the vehicle to fail an emissions test?

- Yes, having this code illuminated can cause the vehicle to fail an emissions test, as it indicates a malfunction in the brake switch circuit.

10. Are there any preventive measures I can take to avoid encountering OBDII code P0703 in my Suzuki?

- To prevent this issue, you can periodically check the functionality of your brake lights, maintain the brake system components, and address any brake-related issues promptly.

Discuss the causes and fixes for P0703 Suzuki OBDII Code

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  • I have a p0703 code on a a2006 suzuki Reno. Break lights are coming on fine. Where and how would I check the break switch connection. What other ways can I diagnose this problem.

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