B2455:04 Code - Cellular Phone Microphone Circuit Open/High Resistance
Quick Answer
The Telematics Communication Interface Control Module provides the Cellular Phone Microphone with a supplied voltage on the Cellular Phone Microphone signal circuit. Common causes include Faulty Cellular Phone Microphone, Cellular Phone Microphone harness is open or shorted, Cellular Phone Microphone 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
- B2455:04 indicates Cellular Phone Microphone Circuit Open/High Resistance.
- Common causes
- Common causes include Faulty Cellular Phone Microphone, Cellular Phone Microphone harness is open or shorted, Cellular Phone Microphone 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 B2455:04 Description
What are the Possible Causes of the DTC B2455:04?
- Faulty Cellular Phone Microphone
- Cellular Phone Microphone harness is open or shorted
- Cellular Phone Microphone circuit poor electrical connection
- Faulty Telematics Communication Interface Control Module
How to Fix the DTC B2455:04?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2455:04 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 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.
Discuss the causes and fixes for B2455:04 OBDII Code
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