B1085 2017 Chevrolet Silverado Code - Left Front Instrument Panel Audio Output 7 Circuit
Quick Answer
The Media Oriented Systems Transport (MOST) is a high-speed multimedia network technology. Common causes include Faulty Audio Amplifier, Faulty Left Front Instrument Panel Speaker, Left Front Instrument Panel Speaker harness is open or shorted. 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
- B1085 2017 Chevrolet Silverado indicates Left Front Instrument Panel Audio Output 7 Circuit.
- Common causes
- Common causes include Faulty Audio Amplifier, Faulty Left Front Instrument Panel Speaker, Left Front Instrument Panel Speaker harness is open or shorted.
- 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 B1085 2017 Chevrolet Silverado Description
The audio amplifier is a participant on the MOST network. The audio amplifier receives audio input and control information from the MOST bus.
Each of the audio output channel circuits (+) and (−), at the audio amplifier have a DC bias voltage that is approximately one-half of the battery voltage. When using a DMM, each of the audio output channel circuits will measure approximately 6.5V DC. The audio being played on the system is produced by a varying AC voltage that is centered around the DC bias voltage on the same circuit. The AC voltage is what causes the speaker cone to move and produce sound.
What are the Possible Causes of the DTC B1085 2017 Chevrolet Silverado?
- Faulty Audio Amplifier
- Faulty Left Front Instrument Panel Speaker
- Left Front Instrument Panel Speaker harness is open or shorted
- Left Front Instrument Panel Speaker circuit poor electrical connection
How to Fix the DTC B1085 2017 Chevrolet Silverado?
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
B1085:02 Left Front Instrument Panel Audio Output 7 Circuit Short to Ground
B1085:04 Left Front Instrument Panel Audio Output 7 Circuit Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1085 2017 Chevrolet Silverado 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.
Need more information about the B1085 2017 Chevrolet Silverado code?
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Frequently Asked Questions about B1085 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code B1085 in a 2017 Chevrolet Silverado?
- Common symptoms include loss of sound from the left front speakers, distorted audio output, or complete silence from the affected speaker.
2. What does the OBDII code B1085 for the 2017 Chevrolet Silverado indicate?
- OBDII code B1085 specifically refers to a fault in the left front instrument panel audio output circuit 7.
3. What are the possible causes of OBDII code B1085 in a 2017 Chevrolet Silverado?
- The code B1085 can be triggered by issues such as a faulty audio amplifier, wiring problems in the circuit, a defective speaker, or a malfunctioning head unit.
4. How can I diagnose the OBDII code B1085 in my 2017 Chevrolet Silverado?
- Diagnosis involves inspecting the left front audio speaker, checking the wiring connections, testing the audio amplifier, and using a multimeter to check for continuity in the circuit.
5. Can OBDII code B1085 in a 2017 Chevrolet Silverado be fixed without professional help?
- Fixing the B1085 code may require some technical expertise due to the need for electrical testing and component replacement, so it's recommended to seek professional assistance.
6. Is it safe to continue driving with OBDII code B1085 present in a 2017 Chevrolet Silverado?
- While the vehicle may still be operable with this code, it's best to address the issue promptly to prevent further damage to the audio system components.
7. How much does it typically cost to repair OBDII code B1085 in a 2017 Chevrolet Silverado?
- Repair costs for OBDII code B1085 can vary depending on the specific cause, but expect expenses for parts and labor, potentially ranging from $100 to $500 or more.
8. Are there any temporary fixes for OBDII code B1085 in a 2017 Chevrolet Silverado?
- Temporary fixes like checking and securing the wiring connections, resetting the audio system, or replacing a blown fuse might help in some cases but won't address underlying issues.
9. Will resetting the vehicle's computer clear OBDII code B1085 in a 2017 Chevrolet Silverado?
- Resetting the computer may temporarily clear the code, but if the root cause of the issue is not fixed, the code is likely to reappear after some time.
10. Can extreme weather conditions trigger OBDII code B1085 in a 2017 Chevrolet Silverado?
- While not a common cause, extreme temperatures or moisture exposure could potentially contribute to electrical issues that result in the B1085 code.
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