AutoCodes – Generic – B2556

B2556 Code - Push-Button Ignition Switch

Quick Answer

The switch that changes the power supply position. Common causes include Faulty Push-Button Ignition Switch, Push-Button Ignition Switch harness is open or shorted, Push-Button 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: B2556 indicates Push-Button Ignition Switch.
Common causes: Common causes include Faulty Push-Button Ignition Switch, Push-Button Ignition Switch harness is open or shorted, Push-Button 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 6,420

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 Dec 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2556 Description

The switch that changes the power supply position. The Body Control Module (BCM) maintains the power supply position status. The BCM changes the power supply position with the operation of the push-button ignition switch. The BCM detects the push-button ignition switch stuck to ON for 100 seconds or more.

OBDII Code B2556 - Push-Button Ignition Switch - AutoCodes.com — B2556 Code - Push-Button Ignition Switch

What does this mean?

What are the Possible Causes of the DTC B2556?

Faulty Push-Button Ignition Switch
Push-Button Ignition Switch harness is open or shorted
Push-Button Ignition Switch circuit poor electrical connection

How to Fix the DTC B2556?

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 B2556 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 B2556 code?

Need more information on how to fix the B2556 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2556 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2556 Infiniti — Push-Button Ignition Switch
B2556 Nissan — Push-Button Ignition Switch

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 B2556 Code

1. What are the common symptoms of OBDII code B2556 (Push-Button Ignition Switch)?

The common symptoms of OBDII code B2556 include difficulty starting the vehicle, intermittent starting issues, and failure of the push-button ignition system to respond.

2. What are the possible causes of OBDII code B2556?

Possible causes of OBDII code B2556 may include a faulty push-button ignition switch, wiring issues, a malfunctioning ignition control module, or a problem with the vehicle's body control module.

3. How can I diagnose the issue related to OBDII code B2556?

Diagnosing the issue related to OBDII code B2556 involves using an OBDII scanner to retrieve the code, inspecting the push-button ignition switch and associated wiring, and testing the ignition control module and body control module for proper functioning.

4. Can I still drive my vehicle with OBDII code B2556 present?

It is not recommended to drive your vehicle with OBDII code B2556 present, as it can lead to potential starting issues or complete failure of the push-button ignition system while driving.

5. How can I repair OBDII code B2556?

To repair OBDII code B2556, you may need to replace the faulty push-button ignition switch, repair any damaged wiring, or address any issues with the ignition control module or body control module as needed.

6. Are there any DIY tips for fixing OBDII code B2556?

While some basic diagnostic steps can be taken by DIY enthusiasts, it is recommended to consult a professional mechanic for the repair of OBDII code B2556 to ensure proper diagnosis and resolution of the issue.

7. Is OBDII code B2556 a serious issue?

OBDII code B2556 should be addressed promptly to prevent potential starting problems or ignition system failures. Ignoring this code could result in being stranded due to an inability to start the vehicle.

8. Can a weak battery cause OBDII code B2556 to appear?

A weak battery can sometimes trigger OBDII code B2556 due to insufficient power for the push-button ignition system. It is advisable to check the battery's condition as part of the diagnostic process.

9. How much does it typically cost to repair OBDII code B2556?

The cost of repairing OBDII code B2556 can vary depending on the underlying cause of the issue, the parts needed for repair, and labor costs. It is advisable to obtain quotes from different mechanics or repair shops.

10. Can resetting the OBDII system clear the B2556 code?

Resetting the OBDII system may temporarily clear the B2556 code, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the problem to prevent future occurrences.