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Engine-Codes – Generic – B1356

B1356 Code - Ignition Run Circuit Open

Quick Answer

The B1356 code indicates that there is an issue with the ignition run circuit being open, which means that there is a break in the circuit preventing the ignition system from functioning properly. Common causes include Faulty ignition switch, Damaged wiring in the ignition run circuit, Loose or corroded electrical connections. 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 indicates Ignition Run Circuit Open.
Common causes
Common causes include Faulty ignition switch, Damaged wiring in the ignition run circuit, Loose or corroded electrical connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 25, 2024
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Code B1356 Description

The B1356 code indicates that there is an issue with the ignition run circuit being open, which means that there is a break in the circuit preventing the ignition system from functioning properly. This can lead to the vehicle not starting, stalling unexpectedly, or experiencing rough idling. The ignition run circuit is crucial for providing power to the ignition system, which is responsible for starting the engine and keeping it running smoothly. If left unresolved, this issue can potentially lead to more severe problems with the vehicle's overall performance.

OBDII Code B1356 - Ignition Run Circuit Open
B1356 Code - Ignition Run Circuit Open

Common Causes of B1356

  1. Faulty ignition switch
  2. Damaged wiring in the ignition run circuit
  3. Loose or corroded electrical connections
  4. Defective ignition control module
  5. Blown fuse related to the ignition system

Symptoms of B1356

  1. Engine not starting or difficulty starting
  2. Stalling or rough idling
  3. Loss of power while driving
  4. Check engine light illuminated
  5. Inconsistent or erratic engine performance

How to Fix B1356

  1. Begin by checking the ignition switch and wiring for any visible damage or wear. Replace any components that are faulty.
  2. Inspect and tighten any loose electrical connections in the ignition run circuit.
  3. Test the ignition control module to see if it is functioning properly. Replace if necessary.
  4. Check and replace any blown fuses related to the ignition system.
  5. Clear the diagnostic trouble codes from the vehicle's computer and test to ensure the issue has been resolved.

Cost to Fix B1356

The typical repair costs for addressing an ignition run circuit open issue can range from $100 to $500, depending on the specific cause of the problem and the parts needed for replacement. It's important to note that labor rates can vary greatly depending on the location and type of repair shop. It is recommended to obtain quotes from multiple auto repair shops to get a more accurate estimate for your specific situation.

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Code B1356 Information for Specific Makes

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 Code

1. What does the OBDII code B1356 mean?

The B1356 code indicates an "Ignition Run Circuit Open," meaning there is an issue with the circuit that powers the ignition system in the "run" position.

2. What are the common symptoms of code B1356?

Symptoms may include the engine not starting, stalling after starting, electrical components failing to operate, or the ignition switch feeling loose or unresponsive.

3. What causes the B1356 code to appear?

Possible causes include a faulty ignition switch, damaged wiring in the ignition circuit, a blown fuse, or a malfunctioning ignition relay.

4. Can a bad ignition switch trigger the B1356 code?

Yes, a worn or defective ignition switch is one of the most common causes of the B1356 code.

5. How can you diagnose code B1356?

Use a multimeter to check for continuity in the ignition circuit, inspect the ignition switch for damage or wear, and check fuses and relays for proper operation.

6. Is it safe to drive with a B1356 code?

Driving with this code is not recommended, as it can lead to unexpected stalling or a complete failure to start the vehicle.

7. How do you fix the B1356 code?

Repairs may include replacing the ignition switch, repairing damaged wiring, replacing blown fuses, or addressing a faulty ignition relay.

8. Can a dead battery cause the B1356 code?

While unlikely, a dead or weak battery can lead to voltage issues that may indirectly contribute to ignition circuit problems.

9. How much does it cost to fix the B1356 code?

Repair costs vary depending on the issue, ranging from $50 for a blown fuse to $300 or more for ignition switch replacement.

10. Can the B1356 code clear itself?

No, the code will not clear itself. The underlying issue must be repaired, and the code can then be cleared with an OBDII scanner.

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