AutoCodes – Ford – B1356 Ford

B1356 Ford Code - Ignition Run Circuit Open

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: B1356 Ford indicates Ignition Run Circuit Open.
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 10,495

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 B1356 Ford 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 B1356 Ford - Ignition Run Circuit Open - AutoCodes.com — B1356 Ford Code - Ignition Run Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1356 Ford?

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 B1356 Ford?

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 B1356 Ford 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 B1356 Ford code?

Need more information on how to fix the B1356 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1356 Ford 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 B1356 Ford Code

1. What are the common symptoms of OBDII code B1356 "Ignition Run Circuit Open" in a Ford vehicle?

- Common symptoms include difficulty starting the vehicle, intermittent stalling, and illumination of the check engine light.

2. What can cause the OBDII code B1356 in a Ford, indicating an "Ignition Run Circuit Open" issue?

- The code B1356 is typically triggered by a faulty ignition switch, damaged wiring in the ignition circuit, or a malfunctioning ignition lock cylinder.

3. How can I diagnose the OBDII code B1356 "Ignition Run Circuit Open" in my Ford vehicle?

- Diagnosing code B1356 involves checking the ignition switch for proper operation, inspecting the wiring for any damage or corrosion, and testing the ignition lock cylinder.

4. Is it safe to continue driving my Ford with the OBDII code B1356 present?

- It is not recommended to drive the vehicle with the B1356 code, as it can lead to potential safety hazards like stalling while driving.

5. Can I reset the OBDII code B1356 in my Ford without fixing the underlying issue?

- While you can clear the code temporarily, it will likely return until the root cause of the "Ignition Run Circuit Open" problem is properly addressed.

6. How much does it typically cost to repair the OBDII code B1356 in a Ford vehicle?

- The cost of repairing the B1356 code can vary depending on the exact cause of the issue, but it may involve replacing the ignition switch, repairing damaged wiring, or fixing the ignition lock cylinder.

7. Are there any DIY tips for fixing the OBDII code B1356 "Ignition Run Circuit Open" in a Ford?

- DIY tips include carefully inspecting the ignition switch and wiring for any visible damage, ensuring proper connections, and consulting the vehicle's service manual for guidance.

8. Can a faulty battery or alternator cause the OBDII code B1356 to appear in a Ford?

- While a weak battery or alternator can potentially cause electrical issues, the B1356 code specifically points to problems within the ignition circuit and is more likely related to the ignition components.

9. Will fixing the OBDII code B1356 in my Ford improve fuel efficiency or performance?

- Resolving the B1356 code is more about ensuring the proper functioning and safety of the ignition system, and it may not directly impact fuel efficiency or performance.

10. How long does it typically take to repair the OBDII code B1356 "Ignition Run Circuit Open" in a Ford at a professional auto repair shop?

- The repair time can vary based on the exact cause of the issue and the shop's workload, but fixing the B1356 code usually takes a few hours to complete.