B1899 Code - Microphone Input Signal Circuit Open
Quick Answer
The Body Control Module (BCM) monitors the Microphone Input. Common causes include Faulty Microphone, Microphone harness is open or shorted, 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
- B1899 indicates Microphone Input Signal Circuit Open.
- Common causes
- Common causes include Faulty Microphone, Microphone harness is open or shorted, 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 B1899 Description
What are the Possible Causes of the DTC B1899?
- Faulty Microphone
- Microphone harness is open or shorted
- Microphone circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B1899?
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 B1899 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 B1899 Code
What does the OBDII code B1899 mean?
The OBDII code B1899 indicates a problem with the microphone input signal circuit, specifically that the circuit is open, which means there is a break or disconnection in the circuit.
What symptoms might I experience with code B1899?
Common symptoms include issues with voice recognition, hands-free phone functions, or the vehicle's audio system, as well as the possibility of related warning lights on the dashboard.
What could cause the B1899 code to trigger?
Causes can include a faulty microphone, damaged wiring or connectors in the microphone circuit, or issues within the vehicle's audio or navigation system.
How can I diagnose a B1899 code?
To diagnose a B1899 code, start by checking the connections and wiring of the microphone for any signs of damage or disconnection, then test the microphone itself for functionality using a multimeter.
What are some common repair solutions for code B1899?
Repairs may involve reconnecting loose or damaged wires, replacing a faulty microphone, or repairing any damaged connectors in the circuit.
Can I reset the B1899 code without fixing the problem?
While you can reset the code, it is advisable to address the underlying issue first, as the code will likely reappear if the problem is not resolved.
Will driving with a B1899 code cause any significant issues?
Driving with a B1899 code may not affect vehicle performance significantly but can impair features like hands-free calling and voice commands, which can be inconvenient.
Is it safe to drive my vehicle with a B1899 code?
Yes, it is generally safe to drive your vehicle with a B1899 code, but you may experience issues with certain audio or communication features. It's best to have it checked to ensure proper functionality.
How can I prevent the B1899 code from reoccurring?
To prevent the B1899 code from reoccurring, regularly inspect the microphone and its wiring for damage, and ensure that all connections are secure, especially after any repairs or modifications to the audio system.
Discuss the causes and fixes for B1899 OBDII Code
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