AutoCodes – Hyundai – P0703 Hyundai

P0703 Hyundai Code - Stop Lamp Switch System Malfunction

Quick Answer

The Brake Pedal Position (BPP) switch is sometimes referred to as the stop lamp switch. Common causes include Faulty Brake Pedal Position (BPP) Switch (Stop Lamp Switch), Misadjusted Brake Pedal Position Switch, Brake Pedal Position Switch harness is open or shorted. 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 Hyundai indicates Stop Lamp Switch System Malfunction.
Common causes
Common causes include Faulty Brake Pedal Position (BPP) Switch (Stop Lamp Switch), Misadjusted Brake Pedal Position Switch, Brake Pedal Position Switch harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 15,532
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 13, 2020
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Code P0703 Hyundai Description

The Brake Pedal Position (BPP) switch is sometimes referred to as the stop lamp switch. The BPP switch provides a signal to the Engine Control Module (ECM) indicating the brakes are applied. The BPP switch is normally open and mounted on the brake pedal support. The Engine Control Module monitors the BPP switch. The Diagnostic Trouble Code (DTC) will set when the Engine Control Module did not receive a BPP switch input.
OBDII Code P0703 Hyundai - Stop Lamp Switch System Malfunction - AutoCodes.com
P0703 Hyundai Code - Stop Lamp Switch System Malfunction

What are the Possible Causes of the DTC P0703 Hyundai?

  • Faulty Brake Pedal Position (BPP) Switch (Stop Lamp Switch)
  • Misadjusted Brake Pedal Position Switch
  • Brake Pedal Position Switch harness is open or shorted
  • Brake Pedal Position Switch circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0703 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0703 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 Hyundai Code

1. What does the OBDII code P0703 mean on a Hyundai?

P0703 indicates a malfunction in the Stop Lamp Switch circuit, which can affect the vehicle's ability to detect brake pedal application.

2. What are the common symptoms of a P0703 code in a Hyundai?

Symptoms may include non-functional brake lights, difficulty shifting out of park, cruise control not working, or the Check Engine Light being illuminated.

3. What causes the P0703 code to appear on a Hyundai?

Common causes include a faulty stop lamp switch, damaged wiring or connectors in the stop lamp circuit, or issues with the vehicle's brake pedal assembly.

4. Can a faulty stop lamp switch cause other problems besides the P0703 code?

Yes, a faulty stop lamp switch can also disable cruise control, prevent the transmission from shifting properly, and cause safety issues due to non-functional brake lights.

5. How do I diagnose the P0703 code on my Hyundai?

Start by inspecting the brake lights for proper operation, check the stop lamp switch for damage or failure, and test the wiring and connectors for continuity or corrosion.

6. Can I drive my Hyundai with the P0703 code?

It's not recommended, as malfunctioning brake lights pose a safety risk, and transmission or cruise control issues may affect drivability.

7. How do I fix the P0703 code on a Hyundai?

The most common fix is replacing the faulty stop lamp switch, but you should also inspect and repair any damaged wiring or loose connections in the circuit.

8. How much does it cost to fix the P0703 code on a Hyundai?

Replacing the stop lamp switch typically costs between $50 and $150, including parts and labor. Additional wiring repairs may increase the cost.

9. Can a bad stop lamp switch trigger other OBDII codes?

Yes, a faulty stop lamp switch may also trigger codes related to the transmission, brake system, or cruise control.

10. How can I prevent the P0703 code from recurring on my Hyundai?

Regularly inspect the stop lamp switch and its wiring during routine maintenance, and address any signs of wear, corrosion, or damage promptly.

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