AutoCodes – Chevrolet – B302A Chevrolet

B302A Chevrolet Code - Mobile Telephone Communications Interface Requested Immobilization

Quick Answer

As part of the vehicle telematics enhanced services, a request may be sent to the Body Control Module (BCM) to disable vehicle starting. Common causes include Contact OnStar. 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: B302A Chevrolet indicates Mobile Telephone Communications Interface Requested Immobilization.
Common causes: Common causes include Contact OnStar.
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 7,121

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 02, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B302A Chevrolet Description

As part of the vehicle telematics enhanced services, a request may be sent to the Body Control Module (BCM) to disable vehicle starting. If a valid message is received by the BCM requesting that starting be disabled, the start enable message will not be sent to the Engine Control Module (ECM).

OBDII Code B302A Chevrolet - Mobile Telephone Communications Interface Requested Immobilization - AutoCodes.com — B302A Chevrolet Code - Mobile Telephone Communications Interface Requested Immobilization

What does this mean?

What are the Possible Causes of the DTC B302A Chevrolet?

Contact OnStar

How to Fix the DTC B302A Chevrolet?

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 does this mean?

Code Tech Notes

1. Verify the OnStar system is not damaged and is operating properly, with no DTCs set. If the OnStar system is damaged, or inoperative, or any OnStar DTCs are set These concerns must be corrected before the start disable can be removed. If the OnStar system is not damaged and is operating properly go step 2.
2. Press the blue OnStar button and ask the advisor to be transferred to the stolen vehicle team to verify the vehicle account has been updated.
3. Verify that OnStar is aware the vehicle has been recovered and that the vehicle account has been updated. If OnStar has not been notified that the vehicle has been recovered Contact the customer and advise them that for security purposes, they must contact OnStar and the law enforcement agency to update the vehicle account. If the account has been properly updated go to step 4.
4. Once the vehicle account has been updated and the start disable request has been removed, DTC B302A will transition to a history DTC. Clear the DTC history.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B302A Chevrolet 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 Help with the Code?

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Information for Specific Chevrolet Models

B302A 2014 Chevrolet Silverado — Mobile Telephone Communications Interface Requested Immobilization
B302A 2015 Chevrolet Silverado — Mobile Telephone Communications Interface Requested Immobilization
B302A 2016 Chevrolet Silverado — Mobile Telephone Communications Interface Requested Immobilization
B302A 2017 Chevrolet Silverado — Mobile Telephone Communications Interface Requested Immobilization
B302A 2018 Chevrolet Silverado — Mobile Telephone Communications Interface Requested Immobilization

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 B302A Chevrolet Code

1. What are the common symptoms of OBDII code B302A in a Chevrolet related to the Mobile Telephone Communications Interface Requested Immobilization?

- The common symptoms include difficulty starting the vehicle, the engine not turning over, and the immobilization of the vehicle's systems.

2. What could be causing the OBDII code B302A in a Chevrolet related to the Mobile Telephone Communications Interface Requested Immobilization?

- The code B302A is typically triggered by a fault in the mobile telephone communications interface module or a communication error between the module and the vehicle's immobilizer system.

3. How can I diagnose the OBDII code B302A in my Chevrolet related to the Mobile Telephone Communications Interface Requested Immobilization?

- A diagnostic scan tool can be used to retrieve the trouble codes and perform a detailed analysis of the mobile telephone communications interface module and its communication with the vehicle's immobilizer system.

4. Is it safe to drive my Chevrolet with the OBDII code B302A related to the Mobile Telephone Communications Interface Requested Immobilization?

- It is not recommended to drive the vehicle with this code present, as it may lead to immobilization or starting issues that could potentially leave you stranded.

5. Can I reset the OBDII code B302A in my Chevrolet related to the Mobile Telephone Communications Interface Requested Immobilization myself?

- While you can attempt to clear the code with a diagnostic scan tool, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

6. What are some repair tips for fixing the OBDII code B302A in a Chevrolet related to the Mobile Telephone Communications Interface Requested Immobilization?

- Repair tips may include checking the connections to the mobile telephone communications interface module, ensuring proper power supply to the module, and verifying communication signals between the module and the vehicle's immobilizer system.

7. Can a faulty mobile telephone communications interface module cause other issues in my Chevrolet besides the OBDII code B302A?

- Yes, a faulty module can potentially cause other communication errors within the vehicle's systems, leading to issues with other electronic components or systems.

8. How much does it typically cost to repair the OBDII code B302A in a Chevrolet related to the Mobile Telephone Communications Interface Requested Immobilization?

- The repair cost can vary depending on the exact cause of the issue, but it may involve replacing the mobile telephone communications interface module, which could range from a few hundred to over a thousand dollars.

9. Are there any recalls or technical service bulletins related to the OBDII code B302A in Chevrolet vehicles?

- It is recommended to check with a Chevrolet dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code.

10. Can a DIY enthusiast with automotive knowledge fix the OBDII code B302A issue in a Chevrolet related to the Mobile Telephone Communications Interface Requested Immobilization?

- While some troubleshooting steps can be performed by a knowledgeable DIY enthusiast, diagnosing and repairing the underlying cause of the code may require specialized tools and expertise, so professional assistance is often recommended.