AutoCodes – Generic – B1358

B1358 Code - Ignition Run Circuit Short To Ground

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: B1358 indicates Ignition Run Circuit Short To Ground.
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 6,351

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 B1358 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 B1358 - Ignition Run Circuit Short To Ground - AutoCodes.com — B1358 Code - Ignition Run Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1358?

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 B1358?

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 B1358 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 B1358 code?

Need more information on how to fix the B1358 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1358 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1358 Ford — Ignition Run Circuit Short To Ground
B1358 Lincoln — Ignition Run Circuit Short To Ground
B1358 Mercury — Ignition Run Circuit Short To Ground

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 B1358 Code

What does OBDII code B1358 mean?

OBDII code B1358 indicates an "Ignition Run Circuit Short To Ground," which signifies that there is a short circuit in the ignition run circuit, potentially affecting the vehicle's electrical systems.

What are common symptoms of code B1358?

Common symptoms may include the engine not starting, dashboard warning lights illuminating, or intermittent electrical issues in various systems, such as the radio or lights.

What could cause the B1358 code to trigger?

Causes may include damaged wiring or connectors in the ignition circuit, a faulty ignition switch, or issues with related components like fuses or relays.

How can I diagnose the B1358 code?

To diagnose B1358, visually inspect the ignition wiring for damage, check the ignition switch for proper function, and use a multimeter to test for continuity in the circuit.

What repairs are typically needed for B1358?

Repairs can involve replacing damaged wiring, fixing or replacing the ignition switch, or addressing any faulty connectors or components in the ignition circuit.

Can I drive my vehicle with the B1358 code?

While you may be able to drive the vehicle, it is not recommended, as the code indicates a potential electrical issue that could lead to starting problems or other electrical failures.

Is B1358 a serious code that requires immediate attention?

Yes, B1358 is considered serious as it can prevent the vehicle from starting and affect other electrical systems, so it should be diagnosed and repaired promptly.

Will clearing the B1358 code fix the problem?

Clearing the code will not fix the underlying issue. It is essential to diagnose and repair the cause of the code before clearing it to ensure the problem does not return.

Are there any specific tools needed to troubleshoot B1358?

Basic tools required include a multimeter for electrical testing, a scan tool to read and clear codes, and basic hand tools for accessing and repairing wiring or components.