B1A71 Chrysler Code - Passive Entry Antenna 1 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 1, Passive Entry Antenna 1 harness is open or shorted, Passive Entry Antenna 1 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
- B1A71 Chrysler indicates Passive Entry Antenna 1 General Electric Failure.
- Common causes
- Common causes include Faulty Passive Entry Antenna 1, Passive Entry Antenna 1 harness is open or shorted, Passive Entry Antenna 1 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 B1A71 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 B1A71 Chrysler?
- Faulty Passive Entry Antenna 1
- Passive Entry Antenna 1 harness is open or shorted
- Passive Entry Antenna 1 circuit poor electrical connection
- Faulty Passive Entry Module (PEM)
- Faulty Radio Frequency Hub (RF Hub) Module
How to Fix the DTC B1A71 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
B1A71-11 PASSIVE ENTRY ANTENNA 1 CIRCUIT SHORT TO GROUND
B1A71-12 PASSIVE ENTRY ANTENNA 1 CIRCUIT SHORT TO BATTERY
B1A71-13 PASSIVE ENTRY ANTENNA 1 CIRCUIT OPEN
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1A71 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 B1A71 Chrysler Code
1. What are the common symptoms of OBDII code B1A71 in a Chrysler related to Passive Entry Antenna 1 General Electric Failure?
- The most common symptoms include issues with the keyless entry system, such as failure to lock or unlock the doors remotely.
2. What can cause the OBDII code B1A71 to trigger in a Chrysler?
- This code is typically triggered by a malfunction in the Passive Entry Antenna 1 General Electric, which may be due to wiring issues, antenna damage, or electronic component failure.
3. How can I diagnose the Passive Entry Antenna 1 General Electric Failure in my Chrysler when OBDII code B1A71 is present?
- Diagnosing this issue usually involves inspecting the antenna wiring, checking for any physical damage to the antenna itself, and using a diagnostic tool to assess the electronic components.
4. Is it safe to continue driving my Chrysler with the OBDII code B1A71 related to Passive Entry Antenna 1 General Electric Failure?
- While the vehicle may still be operable, it is recommended to address this issue promptly to avoid potential keyless entry system failures and inconvenience.
5. Can I repair the Passive Entry Antenna 1 General Electric Failure in my Chrysler on my own?
- Repairing this issue may require specialized tools and knowledge, so it is advisable to consult a professional technician or dealership for proper diagnosis and repair.
6. How much does it typically cost to repair the Passive Entry Antenna 1 General Electric Failure in a Chrysler?
- Repair costs can vary depending on the extent of the damage and the specific components that need to be replaced, so it is best to obtain a diagnostic assessment for an accurate estimate.
7. Are there any preventive measures I can take to avoid encountering the OBDII code B1A71 in my Chrysler?
- Regularly inspecting the keyless entry system components, maintaining the vehicle's electrical system, and addressing any issues promptly can help prevent this code from appearing.
8. Can a faulty Passive Entry Antenna 1 General Electric affect other systems in my Chrysler?
- While the primary impact is on the keyless entry system, a malfunctioning antenna may also cause related issues with the vehicle's security system or other electronic components.
9. Will resetting the OBDII code B1A71 related to Passive Entry Antenna 1 General Electric Failure make it go away permanently?
- Resetting the code may temporarily clear the warning, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the fault again.
10. How long does it typically take to repair the Passive Entry Antenna 1 General Electric Failure in a Chrysler?
- The repair duration can vary based on the complexity of the issue and the availability of replacement parts, so it is best to consult with a technician for an estimated timeline.
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