AutoCodes – Lincoln – P0703 Lincoln

P0703 Lincoln Code - Brake Switch Performance

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 Lincoln indicates Brake Switch Performance.
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.

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Code Popularity 711

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 13, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0703 Lincoln Description

The Brake Pedal Position (BPP) switch is sometimes referred to as the stop lamp switch. The BPP switch provides a signal to the Powertrain Control Module (PCM) indicating the brakes are applied. The BPP switch is normally open and mounted on the brake pedal support. The Powertrain Control Module monitors the BPP switch. The Diagnostic Trouble Code (DTC) will set when the Powertrain Control Module did not receive a BPP switch input.

OBDII Code P0703 Lincoln - Brake Switch Performance - AutoCodes.com — P0703 Lincoln Code - Brake Switch Performance

What does this mean?

What are the Possible Causes of the DTC P0703 Lincoln?

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 Powertrain Control Module (PCM)

How to Fix the DTC P0703 Lincoln?

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.

What does this mean?

Code Tech Notes

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).

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0703 Lincoln 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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Need Help with the Code?

Get the P0703 Lincoln code diagnosed by a professional: Find a repair shop in your area

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 Lincoln Code

What does the OBDII code P0703 mean for my Lincoln?

P0703 indicates a problem with the brake switch performance, which is critical for the vehicle's transmission and safety systems.

What symptoms might I experience with a P0703 code?

Common symptoms include the brake lights not functioning, difficulty shifting gears, and the vehicle may enter limp mode.

What could cause the P0703 code to trigger?

Causes may include a faulty brake switch, wiring issues, a blown fuse, or problems with the transmission control module.

How can I diagnose the P0703 code?

To diagnose P0703, check the brake switch for proper operation, inspect the wiring and connectors for damage, and ensure that fuses related to the brake lights are intact.

Is it safe to drive with a P0703 code?

While it may be safe for a short distance, driving with this code can lead to issues with shifting and brake light functionality, which can be dangerous.

What are some common repairs for the P0703 code?

Common repairs include replacing the brake switch, fixing wiring faults, or addressing issues with the vehicle's transmission control module.

How can I prevent the P0703 code from occurring?

Regular maintenance, including checking and replacing worn components and ensuring electrical connections are clean and secure, can help prevent this code.

Will clearing the P0703 code fix the issue?

Clearing the code may reset the check engine light temporarily, but if the underlying issue is not fixed, the code will likely return.

Can I fix the P0703 code myself?

If you have basic automotive knowledge, you can troubleshoot and possibly replace the brake switch or check wiring. Otherwise, consulting a professional is recommended.