B1045 2017 Chevrolet Silverado Code - Left Rear Door Audio Output 3 Circuit
Quick Answer
Vehicles without Amplifier: Each of the audio output channel circuits (+) and (-), at the radio have a DC bias voltage that is approximately one-half of battery voltage. Common causes include Faulty Radio Unit, Faulty Audio Amplifier (If equipped), Faulty Left Rear Door Speaker (Subwoofer for vehicles with Amplifier). 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
- B1045 2017 Chevrolet Silverado indicates Left Rear Door Audio Output 3 Circuit.
- Common causes
- Common causes include Faulty Radio Unit, Faulty Audio Amplifier (If equipped), Faulty Left Rear Door Speaker (Subwoofer for vehicles with Amplifier).
- 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 B1045 2017 Chevrolet Silverado Description
Each of the audio output channel circuits (+) and (-), at the radio have a DC bias voltage that is approximately one-half of battery voltage. When using a DMM, each of the audio output channel circuits will measure approximately 6.5 V 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. The frequency (Hz) of the AC voltage signal is directly related to the frequency of the input (audio source playing) to the audio system. Both the DC bias voltage and the AC voltage signals are needed for the audio system to properly produce sound.
Vehicles with Amplifier:
The Media Oriented Systems Transport (MOST) is a high-speed multimedia network technology. The serial MOST bus uses a ring topology and synchronous data communication to transmit audio, video, data and control information between any devices attached.
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 B1045 2017 Chevrolet Silverado?
- Faulty Radio Unit
- Faulty Audio Amplifier (If equipped)
- Faulty Left Rear Door Speaker (Subwoofer for vehicles with Amplifier)
- Left Rear Door Speaker (Subwoofer for vehicles with Amplifier) harness is open or shorted
- Left Rear Door Speaker (Subwoofer for vehicles with Amplifier) circuit poor electrical connection
How to Fix the DTC B1045 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
B1045:02 Left Rear Door Audio Output 3 Circuit Short to Ground
B1045:04 Left Rear Door Audio Output 3 Circuit Open
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1045 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.
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Frequently Asked Questions about B1045 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code B1045 in a 2017 Chevrolet Silverado related to the Left Rear Door Audio Output 3 Circuit?
The common symptoms include no sound coming from the left rear speaker, distorted audio, or complete audio failure from that specific speaker.
2. What can cause the OBDII code B1045 in a 2017 Chevrolet Silverado?
Possible causes of code B1045 include a faulty speaker, damaged wiring, a loose connection, or a malfunction in the audio system's circuitry.
3. How can I troubleshoot the B1045 code in my 2017 Chevrolet Silverado?
Begin by checking the speaker in the left rear door for physical damage or signs of malfunction. If the speaker appears fine, inspect the wiring and connections for any issues or loose connections.
4. Can a DIY enthusiast repair the B1045 code on a 2017 Chevrolet Silverado?
Depending on your level of expertise, you may be able to repair the B1045 code by replacing a faulty speaker or fixing a wiring issue. However, if you are unsure or uncomfortable with electrical work, it's best to seek professional help.
5. Is it safe to continue driving with the B1045 code in a 2017 Chevrolet Silverado?
While driving with the B1045 code may not directly affect the vehicle's performance, it can be annoying to have a malfunctioning speaker. It's recommended to address the issue to ensure proper audio functionality.
6. How much does it typically cost to repair the B1045 code in a 2017 Chevrolet Silverado?
The cost of repair can vary depending on the root cause of the issue. Replacing a speaker or fixing wiring problems may range from $50 to $200, while more complex audio system repairs could cost more.
7. Can extreme weather conditions contribute to triggering the B1045 code in a 2017 Chevrolet Silverado?
Extreme temperatures or moisture can potentially lead to electrical issues that trigger the B1045 code. It's advisable to keep the vehicle stored in a moderate environment to prevent such problems.
8. How long does it usually take to resolve the B1045 code in a 2017 Chevrolet Silverado?
The repair time for the B1045 code can vary based on the complexity of the issue and the availability of parts. Simple fixes like replacing a speaker may take an hour or two, while more intricate repairs could require more time.
9. Are there any preventative measures to avoid encountering the B1045 code in a 2017 Chevrolet Silverado?
Regularly inspecting the audio system components, including speakers and wiring, can help detect potential issues early on and prevent the occurrence of the B1045 code.
10. Will resetting the OBDII system clear the B1045 code in a 2017 Chevrolet Silverado?
Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause of the problem to prevent future occurrences.
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