B1A73 Dodge 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 Dodge 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 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 B1A73 Dodge?
- 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 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
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 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 B1A73 Dodge Code
1. What does the OBDII code B1A73 mean on a Dodge vehicle?
The B1A73 code indicates a "Passive Entry Antenna 3 General Electric Failure," meaning there is an issue with the third passive entry antenna or its circuit.
2. What are the symptoms of the B1A73 code in a Dodge?
Symptoms may include the passive entry system not functioning properly, difficulty unlocking or locking the vehicle without using the key fob, or an illuminated warning light on the dashboard.
3. What causes the B1A73 code to appear on a Dodge?
Common causes include a faulty passive entry antenna, damaged wiring or connectors, water intrusion in the antenna area, or a failure in the associated control module.
4. How is the B1A73 code diagnosed?
A technician will use a scan tool to confirm the code, inspect the passive entry antenna and its wiring, check for corrosion or physical damage, and test the electrical continuity of the circuit.
5. Can I still drive my Dodge with the B1A73 code?
Yes, you can drive the vehicle, but the passive entry system may not function correctly, requiring you to use the key fob or key manually to unlock and lock the car.
6. How can I fix the B1A73 code on my Dodge?
Repairs may involve replacing the faulty passive entry antenna, repairing damaged wiring or connectors, or reprogramming the control module if needed.
7. How much does it cost to fix a B1A73 code on a Dodge?
Repair costs vary depending on the issue but typically range from $100 to $300 for parts and labor, depending on whether the antenna or wiring needs replacement.
8. Can a weak key fob battery cause the B1A73 code?
No, a weak key fob battery does not directly cause the B1A73 code, but it can cause similar symptoms, so it's worth checking the battery first.
9. Where is Passive Entry Antenna 3 located on a Dodge?
The exact location of Passive Entry Antenna 3 varies by model but is often found near the rear of the vehicle, such as in the trunk or under the rear bumper.
10. Does the B1A73 code require a software update to fix?
In some cases, a software update to the control module may be necessary if the issue is related to a programming glitch rather than a hardware failure.
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