B1A71 Dodge 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 Dodge 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 Dodge 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 Dodge?
- 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 Dodge?
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 Dodge 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 Dodge Code
1. What are the common symptoms of OBDII code B1A71 in a Dodge related to Passive Entry Antenna 1 General Electric Failure?
The common symptoms include issues with the keyless entry system, difficulty unlocking or locking the doors remotely, and potential problems with the push-button start feature.
2. What can cause the OBDII code B1A71 in a Dodge related to Passive Entry Antenna 1 General Electric Failure?
Potential causes include a malfunctioning passive entry antenna, damaged wiring, issues with the key fob, or a problem with the vehicle's computer system.
3. How can I diagnose the OBDII code B1A71 in a Dodge related to Passive Entry Antenna 1 General Electric Failure?
Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault codes, inspecting the passive entry antenna and wiring for damage, and testing the key fob to ensure it is functioning properly.
4. Is it possible to repair the OBDII code B1A71 in a Dodge related to Passive Entry Antenna 1 General Electric Failure at home?
Depending on the exact cause of the issue, some repairs may be possible at home, such as replacing a faulty key fob battery or repairing damaged wiring. However, more complex repairs may require professional assistance.
5. Can I still drive my Dodge with the OBDII code B1A71 related to Passive Entry Antenna 1 General Electric Failure?
In most cases, the vehicle should still be safe to drive with this code, but you may experience inconvenience with the keyless entry system and push-button start functionality until the issue is resolved.
6. How much does it typically cost to repair the OBDII code B1A71 in a Dodge related to Passive Entry Antenna 1 General Electric Failure?
The cost of repair can vary depending on the exact cause of the issue and whether you choose to do the repairs yourself or seek professional help. Costs may range from a few dollars for a new key fob battery to several hundred dollars for more complex repairs.
7. Are there any preventive measures to avoid the OBDII code B1A71 related to Passive Entry Antenna 1 General Electric Failure in a Dodge?
To help prevent this issue, you can regularly check and maintain the key fobs, ensure the passive entry antenna is free of damage, and address any keyless entry system issues promptly to avoid potential failures.
8. Will resetting the OBDII code B1A71 related to Passive Entry Antenna 1 General Electric Failure in a Dodge make it go away permanently?
Resetting the code may temporarily clear the fault, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is important to diagnose and fix the root cause of the problem for a permanent solution.
9. Can a faulty Passive Entry Antenna 1 General Electric Failure in a Dodge cause other related issues?
Yes, a faulty passive entry antenna can potentially cause other related issues with the keyless entry system, remote locking, and starting the vehicle, so it is important to address this problem promptly.
10. Is it necessary to visit a dealership for repairs related to the OBDII code B1A71 in a Dodge related to Passive Entry Antenna 1 General Electric Failure?
While visiting a dealership is an option, repairs for this code can often be done by independent mechanics or even at home, depending on the complexity of the issue. It is recommended to seek professional help if you are unsure about diagnosing or repairing the problem yourself.
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