B1A73 Code - Passive Entry Antenna 3 General Electric Failure
Quick Answer
The Passive Entry (PE) antenna units allow the transmitter within the Radio Frequency Hub (also known as the RF Hub) to communicate via Low Frequency (LF) radio transmission with a FOB with Integrated Key (FOBIK) that is located inside the vehicle or, at most, about 2 meters (6.5 feet) horizontally in all directions around the outside of the vehicle. Common causes include Faulty Passive Entry Antenna 3, Passive Entry Antenna 3 harness is open or shorted, Passive Entry Antenna 3 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
- B1A73 indicates Passive Entry Antenna 3 General Electric Failure.
- Common causes
- Common causes include Faulty Passive Entry Antenna 3, Passive Entry Antenna 3 harness is open or shorted, Passive Entry Antenna 3 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.
Code B1A73 Description
Each antenna unit has two dedicated connections to the RF Hub. One connection is the LF antenna output circuit, while the other connection Is the LF antenna return circuit. These circuits to each antenna unit are a twisted pair to help reduce the potential for induced electrical interference. The RF Hub microcontroller monitors all of the antenna units and will store a Diagnostic Trouble Code (DTC) for any fault that it detects.
The hard wired inputs and outputs of the antenna units may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. However, the most reliable, efficient, and accurate means to diagnose the antenna units requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
What are the Possible Causes of the DTC B1A73?
- Faulty Passive Entry Antenna 3
- Passive Entry Antenna 3 harness is open or shorted
- Passive Entry Antenna 3 circuit poor electrical connection
- Faulty Passive Entry Module (PEM)
- Faulty Radio Frequency Hub (RF Hub) Module
How to Fix the DTC B1A73?
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.
Code Tech Notes
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
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1A73 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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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
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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