B1A73 Chrysler 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 Chrysler 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 Chrysler 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 Chrysler?
- 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 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.
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 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.
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Frequently Asked Questions about B1A73 Chrysler Code
1. What are common symptoms of OBDII code B1A73 Chrysler - Passive Entry Antenna 3 General Electric Failure?
- Common symptoms include issues with the passive entry system, such as the key fob not working properly, difficulty locking or unlocking the vehicle, and intermittent power door lock operation.
2. What are the possible causes of OBDII code B1A73 Chrysler?
- The code B1A73 Chrysler typically indicates a failure with Passive Entry Antenna 3, which could be caused by a faulty antenna module, damaged wiring, or a malfunctioning key fob.
3. How can I diagnose the OBDII code B1A73 Chrysler - Passive Entry Antenna 3 General Electric Failure?
- Diagnosis usually involves using a scan tool to read the code and perform further testing to pinpoint the exact cause, such as checking the antenna module, inspecting wiring connections, and testing the key fob signal.
4. Is it safe to continue driving with OBDII code B1A73 Chrysler active?
- It is generally safe to continue driving with this code, but it is important to address the issue promptly to ensure the proper functioning of the passive entry system.
5. What are some repair tips for fixing OBDII code B1A73 Chrysler?
- Repair tips may include replacing the faulty antenna module, repairing damaged wiring, reprogramming the key fob, or performing a system reset to clear the code and reset the passive entry system.
6. Can I reset OBDII code B1A73 Chrysler myself?
- In some cases, you may be able to reset the code by disconnecting the car battery for a few minutes or using a scan tool to clear the code. However, it is recommended to address the underlying issue to prevent the code from reappearing.
7. How much does it cost to repair OBDII code B1A73 Chrysler?
- The cost of repair can vary depending on the exact cause of the code, but it may involve expenses for parts, labor, and diagnostic services. It is advisable to consult a professional mechanic for an accurate estimate.
8. Can extreme weather conditions affect OBDII code B1A73 Chrysler?
- Extreme weather conditions, such as heavy rain or extreme cold, can potentially affect the functioning of the passive entry system and trigger the B1A73 Chrysler code. Ensuring proper protection and maintenance of the system can help prevent such issues.
9. Are there any preventive measures to avoid OBDII code B1A73 Chrysler in the future?
- To prevent the recurrence of the B1A73 Chrysler code, regular maintenance of the passive entry system, including checking the antenna module, inspecting wiring, and replacing key fob batteries when needed, can help maintain proper functionality.
10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code B1A73 Chrysler?
- Depending on the specific cause of the code, a DIY enthusiast with basic automotive knowledge may be able to address certain issues, such as replacing the key fob battery or checking wiring connections. However, more complex repairs may require professional assistance.
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