AutoCodes – Generic – B1357

B1357 Code - Ignition Run Circuit Short To Battery

Quick Answer

The Ignition Switch RUN circuit provides greater than 10 volts through the circuits to the Smart Junction Box (SJB) when the key is in the RUN position. Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch circuit poor electrical connection. 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: B1357 indicates Ignition Run Circuit Short To Battery.
Common causes: Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch circuit poor electrical connection.
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 6,057

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1357 Description

The Ignition Switch RUN circuit provides greater than 10 volts through the circuits to the Smart Junction Box (SJB) when the key is in the RUN position. The OBDII sets when the Ignition Switch signal is not factory specifications.

OBDII Code B1357 - Ignition Run Circuit Short To Battery - AutoCodes.com — B1357 Code - Ignition Run Circuit Short To Battery

What does this mean?

What are the Possible Causes of the DTC B1357?

Faulty Ignition Switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Smart Junction Box (SJB)

How to Fix the DTC B1357?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1357 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.

Need more information about the B1357 code?

Need more information on how to fix the B1357 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1357 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1357 Ford — Ignition Run Circuit Short To Battery
B1357 Lincoln — Ignition Run Circuit Short To Battery
B1357 Mercury — Ignition Run Circuit Short To Battery

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 B1357 Code

1. What are the common symptoms of OBDII code B1357, Ignition Run Circuit Short To Battery?

- Common symptoms include difficulty starting the vehicle, engine stalling, and potential issues with the ignition system.

2. What are the possible causes of OBDII code B1357?

- Causes of B1357 can include a short circuit in the ignition run circuit, faulty ignition switch, damaged wiring, or a malfunctioning ignition control module.

3. How can I diagnose the Ignition Run Circuit Short To Battery issue?

- Diagnosing this issue typically involves using a diagnostic scanner to retrieve the specific OBDII code, checking the wiring and connectors related to the ignition system, and testing the ignition switch for proper functionality.

4. Can I drive my vehicle with OBDII code B1357 active?

- It is not recommended to drive your vehicle with an active B1357 code, as it can lead to potential safety hazards and further damage to the ignition system.

5. What are the repair options for OBDII code B1357?

- Repair options may include repairing or replacing damaged wiring, replacing the ignition switch or ignition control module, and clearing the code with a diagnostic scanner.

6. How much does it typically cost to repair OBDII code B1357?

- The cost of repairing B1357 can vary depending on the specific issue causing the code, but it is advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.

7. Are there any preventive measures to avoid OBDII code B1357 in the future?

- To prevent B1357, it's important to maintain your vehicle's ignition system regularly, address any electrical issues promptly, and avoid overloading the electrical circuits.

8. How serious is OBDII code B1357, Ignition Run Circuit Short To Battery?

- Ignoring OBDII code B1357 can lead to potential safety risks, such as engine stalling while driving, so it is essential to address the issue promptly.

9. Can a DIY enthusiast fix OBDII code B1357 at home?

- While some individuals with automotive repair experience may be able to address B1357 at home, it is recommended to seek professional help to ensure proper diagnosis and repair.

10. How long does it take to repair OBDII code B1357?

- The repair time for B1357 can vary depending on the extent of the issue and the availability of parts, but it typically takes a few hours to a day to complete the repair.