AutoCodes – Chevrolet – B1287 Chevrolet

B1287 Chevrolet 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 Chevrolet 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.

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Code Popularity 7,933

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 29, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1287 Chevrolet Description

The radio provides a remote amplifier mute output circuit to control overall muting of the remote amplifier. The amplifier receives Pulse Width Modulated (PWM) signals on the control circuit at varying duty cycle percentages for controlling muted and unmuted functions of the amplifier. Circuitry internal to the radio monitors the remote amplifier mute circuit for faults and sets the appropriate Diagnostic Trouble Code (DTC) when faults are detected.

OBDII Code B1287 Chevrolet - Amplifier Control Signal Circuit - AutoCodes.com — B1287 Chevrolet Code - Amplifier Control Signal Circuit

What does this mean?

What are the Possible Causes of the DTC B1287 Chevrolet?

Faulty Amplifier
Amplifier harness is open or shorted
Amplifier circuit poor electrical connection
Faulty Radio Unit

How to Fix the DTC B1287 Chevrolet?

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 does this mean?

Code Tech Notes

DTC B1287 01 Amplifier Control Signal Circuit Short to Battery
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 Chevrolet 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1287 Chevrolet Code

1. What are the common symptoms of OBDII code B1287 in a Chevrolet related to the Amplifier Control Signal Circuit?

- Common symptoms include no sound from the audio system, intermittent sound issues, or complete audio system failure.

2. What are the possible causes of OBDII code B1287 in a Chevrolet related to the Amplifier Control Signal Circuit?

- Possible causes include a faulty amplifier, damaged wiring or connectors in the circuit, or a malfunctioning control module.

3. How can I diagnose the issue causing OBDII code B1287 in a Chevrolet related to the Amplifier Control Signal Circuit?

- Diagnose by checking the amplifier for power and ground, inspecting wiring for damage, and using a multimeter to test for continuity in the circuit.

4. Can a blown fuse cause OBDII code B1287 in a Chevrolet related to the Amplifier Control Signal Circuit?

- Yes, a blown fuse in the audio system circuit can cause the amplifier control signal circuit to malfunction, triggering the B1287 trouble code.

5. How can I repair OBDII code B1287 in a Chevrolet related to the Amplifier Control Signal Circuit?

- Repair options may include replacing the faulty amplifier, repairing damaged wiring, fixing poor connections, or reprogramming the control module.

6. Is it safe to continue driving with OBDII code B1287 in a Chevrolet related to the Amplifier Control Signal Circuit?

- It is generally safe to drive, but it is recommended to address the issue promptly to avoid potential audio system malfunctions.

7. Can a DIY enthusiast fix OBDII code B1287 in a Chevrolet related to the Amplifier Control Signal Circuit?

- Depending on their skills, a DIY enthusiast may be able to diagnose and repair simple issues like blown fuses or loose connections, but more complex problems may require professional help.

8. Will resetting the OBDII system clear the B1287 trouble code in a Chevrolet related to the Amplifier Control Signal Circuit?

- Resetting the system may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to reappear after driving cycles.

9. How long does it take to repair OBDII code B1287 in a Chevrolet related to the Amplifier Control Signal Circuit?

- The repair time can vary depending on the specific issue, but it may take anywhere from a few minutes for simple fixes to several hours for more complex diagnostics and repairs.

10. Are there any recalls or technical service bulletins related to OBDII code B1287 in a Chevrolet related to the Amplifier Control Signal Circuit?

- It is recommended to check with a Chevrolet dealership or online resources for any relevant recalls or technical service bulletins related to this specific OBDII code and circuit issue.