B2455:04 Code - Cellular Phone Microphone Circuit Open/High Resistance
Quick Answer
The diagnostic trouble code B2455:04 indicates a problem with the cellular phone microphone circuit in the vehicle. Common causes include Damaged wiring in the cellular phone microphone circuit, Loose or corroded connections in the circuit, Faulty cellular phone microphone. 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
- B2455:04 indicates Cellular Phone Microphone Circuit Open/High Resistance.
- Common causes
- Common causes include Damaged wiring in the cellular phone microphone circuit, Loose or corroded connections in the circuit, Faulty cellular phone microphone.
- 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.
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Code B2455:04 Description
The diagnostic trouble code B2455:04 indicates a problem with the cellular phone microphone circuit in the vehicle. This code specifically points to an open circuit or high resistance issue with the microphone circuit, which can prevent the proper functioning of the hands-free calling system in the vehicle. The hands-free calling system relies on the cellular phone microphone to pick up the driver's voice and transmit it to the other party during phone calls.
Common Causes of B2455:04
- Damaged wiring in the cellular phone microphone circuit
- Loose or corroded connections in the circuit
- Faulty cellular phone microphone
- Water damage to the microphone or circuit components
- Electrical issues in the vehicle's electronic system
Symptoms of B2455:04
- Inability to use hands-free calling system
- Voice command features not working properly
- Navigation system unable to pick up voice commands
- Poor audio quality during phone calls
- Error message on the vehicle's infotainment system related to microphone circuit
How to Fix B2455:04
- Inspect the wiring and connections in the cellular phone microphone circuit for any damage or corrosion.
- Test the cellular phone microphone itself to determine if it is functioning properly.
- Repair or replace any damaged wiring or connections in the circuit.
- If the microphone is faulty, replace it with a new one.
- Clear the diagnostic trouble code from the vehicle's system to reset the error message.
Cost to Fix B2455:04
The typical repair costs for addressing a cellular phone microphone circuit issue can range from $100 to $300, including parts and labor. However, the specific diagnosis time and labor rates can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate.
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Frequently Asked Questions about B2455:04 Code
1. What does the OBDII code B2455:04 mean?
The code B2455:04 indicates an open circuit or high resistance in the cellular phone microphone circuit, which is part of the vehicle's communication or infotainment system.
2. What are the common symptoms of the B2455:04 code?
Symptoms may include poor or no voice recognition, inability to use hands-free calling, or the microphone not picking up sound during calls.
3. What causes the B2455:04 code to appear?
Common causes include a damaged microphone, disconnected or corroded wiring, a faulty connector, or an issue with the infotainment system’s control module.
4. Can I still drive my car with the B2455:04 code?
Yes, you can still drive your car, but hands-free communication and voice recognition features may not work properly.
5. How do I diagnose the B2455:04 code?
Start by inspecting the microphone and its wiring for damage or disconnection, and check for corrosion at the connectors. Use a multimeter to test for continuity and high resistance in the circuit.
6. How can I fix the B2455:04 code?
Repairs may include reconnecting or replacing damaged wires, cleaning corroded connectors, replacing the microphone, or reprogramming the infotainment module if needed.
7. Is the B2455:04 code likely to reset on its own?
No, the code typically won’t reset until the underlying issue is resolved and the vehicle’s diagnostic system confirms the repair.
8. What tools are needed to troubleshoot the B2455:04 code?
You may need a multimeter, wiring diagram, OBDII scanner, and basic hand tools to diagnose and repair the issue.
9. Could a software issue trigger the B2455:04 code?
Yes, a glitch in the infotainment system software or a need for a module update can occasionally trigger this code.
10. How much does it cost to fix the B2455:04 code?
The repair cost varies depending on the issue, but replacing a microphone might cost $50–$150, while wiring repairs or module updates could cost more if professional service is required.
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