B1287 Buick Code - Amplifier Control Signal Circuit
Quick Answer
The radio provides a remote amplifier mute output circuit to control overall muting of the remote amplifier. Common causes include Faulty Amplifier, Amplifier harness is open or shorted, Amplifier circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B1287 Buick indicates Amplifier Control Signal Circuit.
- Common causes
- Common causes include Faulty Amplifier, Amplifier harness is open or shorted, Amplifier circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B1287 Buick Description
What are the Possible Causes of the DTC B1287 Buick?
- Faulty Amplifier
- Amplifier harness is open or shorted
- Amplifier circuit poor electrical connection
- Faulty Radio Unit
How to Fix the DTC B1287 Buick?
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
DTC B1287 02 Amplifier Control Signal Circuit Short to Ground
DTC B1287 04 Amplifier Control Signal Circuit Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1287 Buick 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 B1287 Buick Code
1. What does the OBDII code B1287 mean on a Buick?
The B1287 code indicates an issue with the Amplifier Control Signal Circuit, which is responsible for communication between the radio head unit and the amplifier.
2. What are the common symptoms of the B1287 code in a Buick?
Typical symptoms include no audio output, distorted sound, or intermittent audio functionality from the vehicle’s sound system.
3. What causes the B1287 code to appear in a Buick?
The most common causes include a faulty amplifier, damaged wiring or connectors in the amplifier control circuit, or a malfunctioning radio head unit.
4. How can I diagnose the B1287 code on my Buick?
Diagnosis involves inspecting the amplifier, checking the wiring and connectors for damage or corrosion, and using a scan tool to confirm the fault and test the circuit.
5. Can the B1287 code be triggered by a blown fuse?
Yes, a blown fuse in the audio system circuit could interrupt the amplifier’s power supply and trigger the B1287 code.
6. Is the B1287 code specific to certain Buick models?
The B1287 code can appear in various Buick models equipped with a factory amplifier and advanced audio systems.
7. Can I still drive my Buick with a B1287 code?
Yes, the vehicle is still drivable, but the audio system may not function properly until the issue is repaired.
8. How do I fix the B1287 code in my Buick?
Repairs may include replacing the amplifier, repairing damaged wiring or connectors, or reprogramming or replacing the radio head unit.
9. Can a software update fix the B1287 code?
In some cases, a radio or amplifier software update from the manufacturer may resolve communication issues causing the code.
10. How much does it cost to repair the B1287 code on a Buick?
Repair costs vary depending on the issue, but replacing an amplifier can cost $300-$800, while wiring repairs may be less expensive.
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