Engine-CodesKIA – P0703 KIA

P0703 KIA Code - Stop Lamp Switch System Malfunction

Quick Answer

The P0703 code for KIA vehicles indicates a malfunction in the Stop Lamp Switch System. Common causes include Faulty Stop Lamp Switch, Wiring or electrical connection issues, Corrosion or damage to the switch components. 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 KIA indicates Stop Lamp Switch System Malfunction.
Common causes
Common causes include Faulty Stop Lamp Switch, Wiring or electrical connection issues, Corrosion or damage to the switch components.
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 08, 2024
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Code P0703 KIA Description

The P0703 code for KIA vehicles indicates a malfunction in the Stop Lamp Switch System. This switch is a crucial component in the vehicle's braking system, as it informs the vehicle's onboard computer when the brake pedal is pressed, allowing the brake lights to illuminate. When this switch malfunctions, it can lead to a variety of issues that affect the vehicle's performance, safety, and overall functionality.

OBDII Code P0703 KIA - Stop Lamp Switch System Malfunction
P0703 KIA Code - Stop Lamp Switch System Malfunction

Common Causes of P0703 KIA

  1. Faulty Stop Lamp Switch.
  2. Wiring or electrical connection issues.
  3. Corrosion or damage to the switch components.
  4. Malfunctioning brake light bulbs.
  5. Issues with the vehicle's onboard computer.

Symptoms of P0703 KIA

  1. Brake lights not illuminating when the brake pedal is pressed.
  2. Difficulty shifting out of park.
  3. Cruise control not working properly.
  4. Check Engine Light illuminated on the dashboard.
  5. Vehicle may not start or may stall unexpectedly.

How to Fix P0703 KIA

  1. Begin by locating the Stop Lamp Switch, usually located near the brake pedal assembly.
  2. Disconnect the electrical connector from the switch.
  3. Remove the old switch and replace it with a new one.
  4. Reconnect the electrical connector.
  5. Test the brake lights and other affected systems to ensure proper functionality.

Cost to Fix P0703 KIA

The cost of repairing a Stop Lamp Switch System malfunction can vary depending on the make and model of the vehicle, as well as the location and labor rates of the auto repair shop. On average, the parts for this repair may range from $50 to $100, while labor costs can add another $50 to $100. Overall, the total repair cost could range from $100 to $200. It is recommended to obtain a specific quote from a trusted auto repair shop to get an accurate estimate for this repair.

Tech Notes for P0703 KIA

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.

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