Engine-CodesGeneric – B1A73

B1A73 Code - Passive Entry Antenna 3 General Electric Failure

Quick Answer

The B1A73 diagnostic trouble code (DTC) indicates a Passive Entry Antenna 3 General Electric Failure. Common causes include Faulty Passive Entry Antenna 3, Damaged wiring or connectors associated with the antenna, Malfunctioning control module for the passive entry system. 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
B1A73 indicates Passive Entry Antenna 3 General Electric Failure.
Common causes
Common causes include Faulty Passive Entry Antenna 3, Damaged wiring or connectors associated with the antenna, Malfunctioning control module for the passive entry system.
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.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code B1A73 Description

The B1A73 diagnostic trouble code (DTC) indicates a Passive Entry Antenna 3 General Electric Failure. In vehicles equipped with passive entry systems, antennas are used to detect the presence of the key fob and allow for keyless entry and ignition. Antenna 3 is one of the components responsible for transmitting and receiving signals between the vehicle and the key fob. When a General Electric Failure is detected in this antenna, it means that there is a malfunction in the electrical circuitry or components associated with it.

OBDII Code B1A73 - Passive Entry Antenna 3 General Electric Failure
B1A73 Code - Passive Entry Antenna 3 General Electric Failure

Common Causes of B1A73

  1. Faulty Passive Entry Antenna 3
  2. Damaged wiring or connectors associated with the antenna
  3. Malfunctioning control module for the passive entry system
  4. Water or moisture damage affecting the antenna or its components

Symptoms of B1A73

  1. Inability to unlock or lock the vehicle using the key fob
  2. Difficulty starting the vehicle with the keyless ignition system
  3. Intermittent issues with the passive entry system
  4. Warning lights related to the passive entry system on the dashboard

How to Fix B1A73

  1. Diagnose the issue by using a diagnostic scanner to retrieve the specific DTC and pinpoint the source of the problem.
  2. Inspect the Passive Entry Antenna 3 and its wiring for any visible damage or corrosion.
  3. Test the antenna's functionality using a multimeter to check for proper signal transmission and reception.
  4. Replace the faulty antenna or repair any damaged wiring or connectors as needed.
  5. Clear the DTC from the vehicle's memory using the diagnostic scanner to reset the passive entry system.

Cost to Fix B1A73

The cost of repairing a Passive Entry Antenna 3 General Electric Failure can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the cost of parts for a new antenna and any necessary wiring or connectors can range from $100 to $300. Labor costs for diagnosis and repair typically add an additional $100 to $200 to the total bill. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to check with local shops for more accurate pricing information.

Tech Notes for B1A73

B1A73-01 PASSIVE ENTRY ANTENNA 3 GENERAL ELECTRICAL FAILURE

B1A73-11 PASSIVE ENTRY ANTENNA 3 CIRCUIT SHORT TO GROUND

B1A73-12 PASSIVE ENTRY ANTENNA 3 CIRCUIT SHORT TO BATTERY

B1A73-13 PASSIVE ENTRY ANTENNA 3 CIRCUIT OPEN

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Code B1A73 Information for Specific Makes

  • B1A73 Chrysler — Passive Entry Antenna 3 General Electric Failure
  • B1A73 Dodge — Passive Entry Antenna 3 General Electric Failure
  • B1A73 Jeep — Passive Entry Antenna 3 General Electric Failure
  • B1A73 RAM — Passive Entry Antenna 3 General Electric 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 B1A73 Code

1. What are the common symptoms of OBDII code B1A73 - Passive Entry Antenna 3 General Electric Failure?

- Common symptoms include issues with the passive entry system, such as difficulty unlocking or locking the vehicle using the key fob.

2. What could cause the OBDII code B1A73 to appear?

- This code typically appears when there is a failure in the General Electric component of Passive Entry Antenna 3, which is responsible for keyless entry functions.

3. How can I diagnose the Passive Entry Antenna 3 General Electric Failure related to code B1A73?

- Diagnosing this issue usually involves conducting a thorough inspection of the passive entry antenna system, checking for loose connections, damaged wiring, or faulty components.

4. Can a DIY enthusiast repair the Passive Entry Antenna 3 General Electric Failure associated with code B1A73?

- While some basic troubleshooting like checking connections and fuses can be done by a DIY enthusiast, repairing or replacing the passive entry antenna system may require professional expertise.

5. Is it safe to continue driving with the OBDII code B1A73 present?

- It is generally safe to drive with this code present, but it's recommended to address the underlying issue promptly to avoid potential inconvenience or security concerns related to the passive entry system.

6. Are there any temporary fixes for the Passive Entry Antenna 3 General Electric Failure linked to code B1A73?

- In some cases, resetting the vehicle's computer system or reprogramming the key fob may temporarily address the issue, but a permanent fix will likely require thorough inspection and repair.

7. What are the potential risks of ignoring the OBDII code B1A73 - Passive Entry Antenna 3 General Electric Failure?

- Ignoring this code could lead to continued problems with the passive entry system, potentially resulting in inconvenience or security vulnerabilities related to accessing the vehicle.

8. How much does it typically cost to repair the Passive Entry Antenna 3 General Electric Failure causing code B1A73?

- The cost of repair can vary depending on the extent of the issue and whether components need to be replaced. It's advisable to consult a professional for an accurate estimate.

9. Can extreme weather conditions contribute to the occurrence of OBDII code B1A73?

- Extreme weather conditions, particularly exposure to moisture or extreme temperatures, can sometimes affect the performance of the passive entry antenna system and trigger this code.

10. Is the Passive Entry Antenna 3 General Electric Failure a common issue in certain vehicle makes or models?

- This specific fault may be more prevalent in vehicles equipped with passive entry systems and may vary in occurrence across different makes and models.

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