AutoCodes – Mercury – P1703 Mercury

P1703 Mercury Code - Brake On/Off Switch Out of Self-Test Range

Quick Answer

Indicates that during the Key On Engine Off (KOEO) self-test, the Brake Pedal Position (BPD) signal was high, or during the Key ON Engine Running (KOER) self-test, the BPP signal di not cycle high and low. Common causes include Brake Pedal Position Switch harness is open or shorted, Brake Pedal Position Switch circuit poor electrical connection, Damage Brake Switch. 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: P1703 Mercury indicates Brake On/Off Switch Out of Self-Test Range.
Common causes: Common causes include Brake Pedal Position Switch harness is open or shorted, Brake Pedal Position Switch circuit poor electrical connection, Damage Brake Switch.
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 3,201

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 Aug 08, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P1703 Mercury Description

OBDII Code P1703 Mercury - Brake On/Off Switch Out of Self-Test Range - AutoCodes.com — P1703 Mercury Code - Brake On/Off Switch Out of Self-Test Range

What does this mean?

What are the Possible Causes of the DTC P1703 Mercury?

Brake Pedal Position Switch harness is open or shorted
Brake Pedal Position Switch circuit poor electrical connection
Damage Brake Switch
Misadjusted Brake Switch

How to Fix the DTC P1703 Mercury?

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 for correct function of the stop lamps, if the stop lamps are not working change the brake switch.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1703 Mercury 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.