B1A72 Chrysler Code - Passive Entry Antenna 2 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 2, Passive Entry Antenna 2 harness is open or shorted, Passive Entry Antenna 2 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
- B1A72 Chrysler indicates Passive Entry Antenna 2 General Electric Failure.
- Common causes
- Common causes include Faulty Passive Entry Antenna 2, Passive Entry Antenna 2 harness is open or shorted, Passive Entry Antenna 2 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 B1A72 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 B1A72 Chrysler?
- Faulty Passive Entry Antenna 2
- Passive Entry Antenna 2 harness is open or shorted
- Passive Entry Antenna 2 circuit poor electrical connection
- Faulty Passive Entry Module (PEM)
- Faulty Radio Frequency Hub (RF Hub) Module
How to Fix the DTC B1A72 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
B1A72-11 PASSIVE ENTRY ANTENNA 2 CIRCUIT SHORT TO GROUND
B1A72-12 PASSIVE ENTRY ANTENNA 2 CIRCUIT SHORT TO BATTERY
B1A72-13 PASSIVE ENTRY ANTENNA 2 CIRCUIT OPEN
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1A72 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 B1A72 Chrysler Code
1. What are common symptoms of OBDII code B1A72 Chrysler related to Passive Entry Antenna 2 General Electric Failure?
- Common symptoms include issues with keyless entry system functionality, such as failure to unlock/lock doors remotely or start the vehicle without physically using the key.
2. What are the possible causes of OBDII code B1A72 Chrysler indicating Passive Entry Antenna 2 General Electric Failure?
- The code may be triggered by a faulty passive entry antenna, damaged wiring, loose connections, or issues with the vehicle's body control module.
3. How can I diagnose OBDII code B1A72 Chrysler associated with Passive Entry Antenna 2 General Electric Failure?
- Diagnosis involves using a diagnostic scanner to read the code, inspecting the passive entry antenna and its connections for damage, and testing the antenna's functionality.
4. Is it safe to continue driving with OBDII code B1A72 Chrysler related to Passive Entry Antenna 2 General Electric Failure?
- While the vehicle may still be operable, it is best to address the issue promptly to ensure the proper functioning of the keyless entry system and related features.
5. Can I repair OBDII code B1A72 Chrysler myself if it indicates Passive Entry Antenna 2 General Electric Failure?
- Depending on your automotive repair skills, you may be able to repair the issue yourself by replacing the passive entry antenna, fixing wiring problems, or addressing loose connections.
6. Are there any temporary fixes for OBDII code B1A72 Chrysler associated with Passive Entry Antenna 2 General Electric Failure?
- Temporary fixes such as resetting the vehicle's computer system or checking for loose connections may help in some cases, but a permanent repair is recommended.
7. How much does it typically cost to repair OBDII code B1A72 Chrysler related to Passive Entry Antenna 2 General Electric Failure?
- Repair costs can vary depending on the specific cause of the issue, but it may involve replacement of the passive entry antenna, wiring repairs, or module reprogramming, which can range from moderate to expensive.
8. Can extreme weather conditions contribute to triggering OBDII code B1A72 Chrysler for Passive Entry Antenna 2 General Electric Failure?
- Yes, extreme weather conditions like heavy rain, snow, or temperature fluctuations can sometimes exacerbate issues with the passive entry antenna, leading to the triggering of the code.
9. Will resetting the OBDII system clear the B1A72 Chrysler code related to Passive Entry Antenna 2 General Electric Failure?
- Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the passive entry antenna persists, the code is likely to reappear.
10. How crucial is it to address OBDII code B1A72 Chrysler for Passive Entry Antenna 2 General Electric Failure promptly?
- It is important to address the code promptly to ensure the proper functioning of the keyless entry system and related features, as prolonged neglect may lead to inconvenience or security concerns.
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