AutoCodes – Generic – B1359

B1359 Code - Ignition Run/Acc Circuit Failure

Quick Answer

The Ignition Switch RUN/ACC circuit provides voltage through the circuits to the Smart Junction Box (SJB) when the key is in the RUN/ACC 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: B1359 indicates Ignition Run/Acc Circuit Failure.
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 45,445

How popular is this code, among other codes? Medium

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 B1359 Description

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

OBDII Code B1359 - Ignition Run/Acc Circuit Failure - AutoCodes.com — B1359 Code - Ignition Run/Acc Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B1359?

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 B1359?

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 B1359 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 B1359 code?

Need more information on how to fix the B1359 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1359 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1359 Ford — Ignition Run/Acc Circuit Failure
B1359 Lincoln — Ignition Run/Acc Circuit Failure
B1359 Mercury — Ignition Run/Acc Circuit Failure

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 B1359 Code

1. What are the common symptoms of OBDII code B1359 (Ignition Run/Acc Circuit Failure)?

- Common symptoms include issues with starting the vehicle, intermittent loss of power, and problems with the ignition system.

2. What are the possible causes of OBDII code B1359?

- The code B1359 can be caused by a faulty ignition switch, damaged wiring in the ignition circuit, or a malfunctioning ignition relay.

3. How can I diagnose OBDII code B1359?

- To diagnose code B1359, a mechanic will typically perform a thorough inspection of the ignition system, check the wiring for any damage, and test the components using a multimeter.

4. Can I still drive my vehicle with OBDII code B1359 present?

- It is not recommended to drive the vehicle with code B1359 present, as it can lead to potential safety hazards and further damage to the ignition system.

5. How can I repair OBDII code B1359?

- Repairing code B1359 may involve replacing the faulty ignition switch, repairing damaged wiring, or replacing the ignition relay. It is recommended to consult a professional mechanic for proper diagnosis and repair.

6. Is it safe to reset the OBDII code B1359 and continue driving?

- While resetting the code may temporarily clear the issue, it is essential to address the root cause of the problem to ensure safe and reliable vehicle operation.

7. Can a DIY enthusiast fix OBDII code B1359 at home?

- Depending on the skill level and experience of the DIY enthusiast, some may be able to address simple causes of code B1359, such as checking for loose connections or replacing a faulty ignition switch. However, complex issues may require professional assistance.

8. How much does it typically cost to repair OBDII code B1359?

- The cost of repairing code B1359 can vary depending on the underlying cause, parts needed for replacement, and labor charges. It is advisable to obtain estimates from reputable auto repair shops.

9. Will OBDII code B1359 cause my vehicle to fail an emissions test?

- Yes, if left unresolved, code B1359 can lead to potential emissions-related issues that may cause the vehicle to fail an emissions test. It is important to address the code promptly.

10. How long does it take to fix OBDII code B1359?

- The repair time for code B1359 can vary based on the specific cause of the issue and the complexity of the repair. Simple fixes may take a few hours, while more intricate problems could require additional time for diagnosis and repair.