B1045 2014 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 2014 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 2014 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 2014 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 2014 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
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1045 2014 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 2014 Chevrolet Silverado Code
1. What does the OBDII code B1045 mean on a 2014 Chevrolet Silverado?
The B1045 code indicates a fault in the Left Rear Door Audio Output 3 Circuit, typically related to the audio system wiring or components for that specific door speaker.
2. What are common symptoms of the B1045 code in a 2014 Silverado?
Symptoms may include no sound or distorted sound from the left rear door speaker, or intermittent audio performance in that area.
3. What causes the B1045 code on a 2014 Chevrolet Silverado?
Common causes include a faulty left rear door speaker, damaged or disconnected wiring, a defective amplifier, or an issue with the radio or audio control module.
4. Can I still drive my Silverado with a B1045 code?
Yes, the B1045 code does not affect the drivability of the vehicle, but it may impact the functionality of the audio system.
5. How do I diagnose the B1045 code on my Silverado?
Start by inspecting the wiring and connections to the left rear door speaker, test the speaker's functionality, and check for continuity in the circuit using a multimeter.
6. How can I fix the B1045 code in a 2014 Chevrolet Silverado?
Repairs may include replacing the left rear door speaker, repairing damaged wiring, reconnecting loose connectors, or replacing a faulty amplifier or audio module.
7. Does the B1045 code always mean the left rear speaker is faulty?
No, the issue could also stem from wiring problems, a defective amplifier, or a malfunctioning audio control module, not just the speaker.
8. What tools are needed to fix the B1045 code?
You’ll typically need a multimeter, basic hand tools, a wiring diagram for the audio system, and possibly a replacement speaker or other components.
9. Can a blown fuse cause the B1045 code?
Unlikely, as this code specifically points to a circuit issue, but checking related fuses for the audio system is a good practice during diagnosis.
10. Should I take my Silverado to a professional for the B1045 code?
If you’re unfamiliar with diagnosing and repairing audio systems, it’s best to consult a professional to ensure accurate troubleshooting and repairs.
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