AutoCodes – Lincoln – B1356 Lincoln

B1356 Lincoln 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 Lincoln 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 844

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

What does this mean?

What are the Possible Causes of the DTC B1356 Lincoln?

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 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1356 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 more information on how to fix the B1356 Lincoln code? Get Access to Factory Service Manuals

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Get the B1356 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 B1356 Lincoln Code

1. What does the OBDII code B1356 mean on a Lincoln?

B1356 indicates an open circuit in the ignition "Run" circuit, which means the vehicle's electrical system is not detecting proper continuity when the ignition is in the "Run" position.

2. What are common symptoms of the B1356 code on a Lincoln?

Symptoms may include the engine not starting, stalling after starting, inoperative accessories in the "Run" position, or dashboard warning lights staying on.

3. What causes the B1356 code to appear?

Common causes include a damaged ignition switch, a broken or disconnected wire in the ignition "Run" circuit, or a faulty electrical connector.

4. How can I diagnose the B1356 code on my Lincoln?

Start by inspecting the ignition switch, checking for damaged wiring, testing circuit continuity with a multimeter, and verifying connections at the ignition switch and related components.

5. Can I still drive my Lincoln with a B1356 code?

Driving may not be possible if the ignition "Run" circuit is open, as the vehicle may fail to start or stall unexpectedly.

6. How do I fix the B1356 code on a Lincoln?

Repairs might include replacing the ignition switch, repairing or replacing damaged wiring, or reconnecting loose electrical connectors in the ignition circuit.

7. How much does it cost to fix the B1356 code on a Lincoln?

Repair costs vary depending on the issue but typically range from $100 to $300 for parts and labor, depending on whether the ignition switch or wiring repair is needed.

8. Can a blown fuse cause the B1356 code?

Yes, a blown fuse in the ignition circuit can potentially cause this code. Check the fuse box for any blown fuses related to the ignition system.

9. What tools do I need to troubleshoot the B1356 code?

You'll need a multimeter to check circuit continuity, a wiring diagram for the ignition system, and possibly a scan tool to clear the code after repairs.

10. Will disconnecting the battery clear the B1356 code?

Disconnecting the battery may temporarily clear the code, but it will likely return if the underlying problem in the ignition "Run" circuit is not resolved.