B1A74 Dodge Code - Passive Entry Antenna 4 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 4, Passive Entry Antenna 4 harness is open or shorted, Passive Entry Antenna 4 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
- B1A74 Dodge indicates Passive Entry Antenna 4 General Electric Failure.
- Common causes
- Common causes include Faulty Passive Entry Antenna 4, Passive Entry Antenna 4 harness is open or shorted, Passive Entry Antenna 4 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 B1A74 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 B1A74 Dodge?
- Faulty Passive Entry Antenna 4
- Passive Entry Antenna 4 harness is open or shorted
- Passive Entry Antenna 4 circuit poor electrical connection
- Faulty Passive Entry Module (PEM)
- Faulty Radio Frequency Hub (RF Hub) Module
How to Fix the DTC B1A74 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
B1A74-11 PASSIVE ENTRY ANTENNA 4 CIRCUIT SHORT TO GROUND
B1A74-12 PASSIVE ENTRY ANTENNA 4 CIRCUIT SHORT TO BATTERY
B1A74-13 PASSIVE ENTRY ANTENNA 4 CIRCUIT OPEN
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1A74 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 B1A74 Dodge Code
1. What are the common symptoms of OBDII code B1A74 in a Dodge related to Passive Entry Antenna 4 General Electric Failure?
- Common symptoms include issues with the keyless entry system, difficulty unlocking or locking the doors remotely, and possible malfunction of the push-button start feature.
2. What can cause the OBDII code B1A74 in a Dodge to trigger for Passive Entry Antenna 4 General Electric Failure?
- The code can be triggered by a faulty passive entry antenna, damaged wiring in the antenna circuit, or a malfunction in the General Electric module responsible for keyless entry functions.
3. How can I diagnose the OBDII code B1A74 related to Passive Entry Antenna 4 General Electric Failure in my Dodge?
- To diagnose the issue, a technician can use a scan tool to retrieve the specific fault code, inspect the passive entry antenna for physical damage, and test the wiring and connections in the antenna circuit.
4. Are there any simple repair tips for resolving the OBDII code B1A74 in a Dodge due to Passive Entry Antenna 4 General Electric Failure?
- Repair tips may include checking and repairing any damaged wiring in the antenna circuit, replacing the passive entry antenna if necessary, or resetting the General Electric module to clear the fault code.
5. Can I continue to drive my Dodge with the OBDII code B1A74 related to Passive Entry Antenna 4 General Electric Failure present?
- While the vehicle may still be driveable with this code, it is recommended to address the issue promptly to prevent potential inconvenience or safety concerns related to the keyless entry system.
6. Is it possible to reset the OBDII code B1A74 in a Dodge caused by Passive Entry Antenna 4 General Electric Failure without professional help?
- In some cases, resetting the fault code can be done by disconnecting the vehicle's battery for a few minutes or using an OBDII scanner to clear the code. However, it is advisable to diagnose and address the underlying issue for a lasting solution.
7. How much does it typically cost to repair the OBDII code B1A74 in a Dodge related to Passive Entry Antenna 4 General Electric Failure?
- The cost of repair can vary depending on the specific cause of the issue. Simple fixes like repairing wiring may be relatively inexpensive, while replacing a faulty passive entry antenna or General Electric module can be more costly.
8. Are there any preventive measures to avoid encountering the OBDII code B1A74 in a Dodge due to Passive Entry Antenna 4 General Electric Failure?
- Regularly inspecting the keyless entry system components, addressing any issues promptly, and following manufacturer recommendations for maintenance can help prevent the occurrence of this fault code.
9. Can extreme weather conditions affect the triggering of OBDII code B1A74 in a Dodge related to Passive Entry Antenna 4 General Electric Failure?
- Extreme weather conditions, such as extreme heat or cold, can potentially impact the performance of electronic components like the passive entry antenna, leading to the triggering of this fault code.
10. Is it necessary to visit a dealership for repairs related to the OBDII code B1A74 in a Dodge concerning Passive Entry Antenna 4 General Electric Failure?
- While a dealership may have specialized knowledge and tools for addressing this issue, independent automotive repair shops with experience in electronic systems may also be able to diagnose and repair the problem effectively.
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