AutoCodes – Generic – B2443

B2443 Code - Powertrain Performance Mode Switch Circuit failure

Quick Answer

The Powertrain Control Module (PCM) monitors the Powertrain Performance Mode Switch. Common causes include Faulty Powertrain Performance Mode Switch, Powertrain Performance Mode Switch harness is open or shorted, Powertrain Performance Mode 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: B2443 indicates Powertrain Performance Mode Switch Circuit failure.
Common causes: Common causes include Faulty Powertrain Performance Mode Switch, Powertrain Performance Mode Switch harness is open or shorted, Powertrain Performance Mode 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 3,979

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 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2443 Description

The Powertrain Control Module (PCM) monitors the Powertrain Performance Mode Switch. The PCM sets the OBDII code when the Powertrain Performance Mode Switch is not to factory specifications.

OBDII Code B2443 - Powertrain Performance Mode Switch Circuit failure - AutoCodes.com — B2443 Code - Powertrain Performance Mode Switch Circuit failure

What does this mean?

What are the Possible Causes of the DTC B2443?

Faulty Powertrain Performance Mode Switch
Powertrain Performance Mode Switch harness is open or shorted
Powertrain Performance Mode Switch circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC B2443?

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 B2443 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 B2443 code?

Need more information on how to fix the B2443 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2443 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 B2443 Code

1. What are common symptoms of OBDII code B2443 (Powertrain Performance Mode Switch Circuit failure)?

Common symptoms include the inability to switch between performance modes, loss of power or acceleration, and illuminated warning lights on the dashboard.

2. What are the possible causes of OBDII code B2443?

Potential causes of this code include a faulty mode switch, damaged wiring or connectors in the circuit, a malfunctioning control module, or a software issue.

3. How can I diagnose the Powertrain Performance Mode Switch Circuit failure associated with code B2443?

Diagnosis typically involves using a scan tool to read the code, inspecting the mode switch and related components for damage, and testing the circuit for continuity and proper operation.

4. Can I continue driving my vehicle with OBDII code B2443 present?

It is not recommended to continue driving with this code active, as it may lead to performance issues and potential safety concerns. It is best to address the underlying cause promptly.

5. What repair options are available for fixing OBDII code B2443?

Repair options may include replacing the mode switch, repairing damaged wiring or connectors, reprogramming the control module, or addressing any software-related issues.

6. Is it possible to reset OBDII code B2443 without fixing the underlying issue?

While clearing the code temporarily may be possible, it is essential to address the root cause of the problem to prevent the code from reoccurring and ensure proper vehicle performance.

7. Can a DIY enthusiast fix OBDII code B2443 at home?

Depending on the specific cause of the code, some DIY enthusiasts with experience in automotive repair may be able to address the issue at home. However, complex electrical or software-related issues may require professional assistance.

8. How much does it typically cost to repair OBDII code B2443?

The cost of repair can vary significantly based on the underlying cause, parts needed, labor rates, and whether the repair is done at a dealership or an independent repair shop. It is advisable to obtain multiple quotes for an accurate estimate.

9. Are there any preventive measures to avoid OBDII code B2443 in the future?

Regular maintenance, such as checking and cleaning electrical connections, inspecting the mode switch for wear, and addressing any performance issues promptly, can help prevent the recurrence of this code.

10. Can OBDII code B2443 affect other systems in the vehicle?

While this code specifically relates to the Powertrain Performance Mode Switch Circuit, unresolved issues with this system may impact overall vehicle performance, fuel efficiency, and other related systems.