B1045 Chevrolet 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 Chevrolet 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 Chevrolet 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 Chevrolet?
- 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 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.
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
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1045 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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Information for Specific Chevrolet Models
- B1045 2014 Chevrolet Silverado — Left Rear Door Audio Output 3 Circuit
- B1045 2015 Chevrolet Silverado — Left Rear Door Audio Output 3 Circuit
- B1045 2016 Chevrolet Silverado — Left Rear Door Audio Output 3 Circuit
- B1045 2017 Chevrolet Silverado — Left Rear Door Audio Output 3 Circuit
- B1045 2018 Chevrolet Silverado — Left Rear Door Audio Output 3 Circuit
Frequently Asked Questions about B1045 Chevrolet Code
1. What are the common symptoms of OBDII code B1045 Chevrolet?
The common symptoms of OBDII code B1045 Chevrolet include no sound from the left rear door speaker, distorted audio output, or complete audio failure.
2. What are the possible causes of OBDII code B1045 Chevrolet?
Possible causes of OBDII code B1045 Chevrolet include a faulty left rear door speaker, damaged wiring or connectors, a malfunctioning audio amplifier, or a problem with the audio control module.
3. How can I diagnose the issue related to OBDII code B1045 Chevrolet?
Diagnosing the issue related to OBDII code B1045 Chevrolet involves checking the left rear door speaker for functionality, inspecting the wiring and connectors for any damage, testing the audio amplifier, and scanning the audio control module for fault codes.
4. What are some repair tips for fixing OBDII code B1045 Chevrolet?
Repair tips for fixing OBDII code B1045 Chevrolet include repairing or replacing the left rear door speaker, repairing any damaged wiring or connectors, replacing a faulty audio amplifier, and reprogramming or replacing the audio control module if necessary.
5. Can I continue driving my Chevrolet with OBDII code B1045?
It is generally safe to continue driving your Chevrolet with OBDII code B1045, but it is recommended to address the issue promptly to avoid potential audio system malfunctions.
6. How much does it typically cost to repair OBDII code B1045 Chevrolet?
The cost of repairing OBDII code B1045 Chevrolet can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.
7. Is OBDII code B1045 Chevrolet a common problem in Chevrolet vehicles?
OBDII code B1045 Chevrolet related to the left rear door audio output circuit is not a common problem in Chevrolet vehicles, but it can occur due to various factors such as wear and tear or electrical issues.
8. Can I reset OBDII code B1045 Chevrolet on my own?
You can reset OBDII code B1045 Chevrolet using an OBDII scanner or by disconnecting the car battery for a few minutes, but it is important to address the underlying issue causing the code to prevent it from reoccurring.
9. Will OBDII code B1045 Chevrolet cause any other issues in my Chevrolet?
OBDII code B1045 Chevrolet specifically affects the left rear door audio output circuit and should not cause any other major issues with your Chevrolet's performance or safety.
10. How can I prevent OBDII code B1045 Chevrolet from happening again in the future?
To prevent OBDII code B1045 Chevrolet from happening again, ensure regular maintenance of your Chevrolet's audio system, check for any signs of wear or damage, and address any audio issues promptly to avoid potential circuit malfunctions.
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