AutoCodes – Chrysler – B1A77 Chrysler

B1A77 Chrysler Code - Remote Start Antenna Circuit Low

Quick Answer

If the vehicle is configured to have Remote Start and the RF Hub does not sense an antenna present, this Diagnostic Trouble Code (DTC) will set. Common causes include Faulty Remote Start Antenna, Remote Start Antenna harness is open or shorted, Remote Start Antenna 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: B1A77 Chrysler indicates Remote Start Antenna Circuit Low.
Common causes: Common causes include Faulty Remote Start Antenna, Remote Start Antenna harness is open or shorted, Remote Start Antenna 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 741

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 Aug 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1A77 Chrysler Description

If the vehicle is configured to have Remote Start and the RF Hub does not sense an antenna present, this Diagnostic Trouble Code (DTC) will set.

OBDII Code B1A77 Chrysler - Remote Start Antenna Circuit Low - AutoCodes.com — B1A77 Chrysler Code - Remote Start Antenna Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1A77 Chrysler?

Faulty Remote Start Antenna
Remote Start Antenna harness is open or shorted
Remote Start Antenna circuit poor electrical connection
Faulty Radio Frequency Hub (RF Hub) Module

How to Fix the DTC B1A77 Chrysler?

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 B1A77 Chrysler 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 B1A77 Chrysler code?

Need more information on how to fix the B1A77 Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1A77 Chrysler 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 B1A77 Chrysler Code

1. What are the common symptoms of OBDII code B1A77 Chrysler (Remote Start Antenna Circuit Low)?

- Common symptoms include the remote start system not working properly, difficulty starting the vehicle remotely, and a warning light on the dashboard.

2. What are the possible causes of OBDII code B1A77 Chrysler?

- Possible causes include a faulty remote start antenna, damaged wiring or connectors in the antenna circuit, or issues with the remote start module.

3. How can I diagnose the Remote Start Antenna Circuit Low issue?

- Diagnose the issue by checking the wiring and connectors in the remote start antenna circuit, testing the remote start antenna for proper functionality, and scanning the vehicle for specific fault codes.

4. Can I still drive my vehicle with the B1A77 code present?

- Yes, you can still drive your vehicle with the B1A77 code present. However, it is recommended to address the issue promptly to avoid further complications with the remote start system.

5. How can I repair OBDII code B1A77 Chrysler?

- Repair options include replacing the remote start antenna, repairing any damaged wiring or connectors in the antenna circuit, or resetting the remote start module.

6. Is it possible to reset the B1A77 code without professional help?

- You may be able to reset the B1A77 code by disconnecting the vehicle's battery for a few minutes and then reconnecting it. However, if the underlying issue persists, the code may reappear.

7. Are there any DIY tips for troubleshooting the Remote Start Antenna Circuit Low problem?

- DIY tips include visually inspecting the antenna and its connections for any visible damage, checking for loose or corroded wiring, and consulting the vehicle's manual for specific troubleshooting steps.

8. Can extreme weather conditions affect the remote start antenna circuit?

- Yes, extreme weather conditions such as excessive heat or cold can potentially affect the performance of the remote start antenna circuit, leading to issues like the B1A77 code.

9. How do I prevent the B1A77 Chrysler code from reoccurring?

- To prevent the B1A77 code from reoccurring, ensure regular maintenance of the remote start system, keep the antenna and its connections clean and free of debris, and address any issues promptly.

10. Is professional help necessary to diagnose and repair the B1A77 code?

- While some DIY troubleshooting is possible, professional help may be necessary to accurately diagnose and repair the B1A77 Chrysler code, especially if the issue is complex or requires specialized tools.