B1049: Manufacturer-Specific Body Code (GM: Audio Output #3 Left-Rear Circuit Open)
2 vehicles · 1 makes · $300-$900 repair
Most Reported On
B1049 is an OBD-II diagnostic trouble code meaning “Manufacturer-Specific Body Code (GM: Audio Output #3 Left-Rear Circuit Open).” B1049 is a manufacturer-specific body code whose meaning depends on the vehicle maker. On GM/Chevrolet vehicles it generally refers to the audio amplifier output #3 (left-rear speaker) circuit being open, meaning the module detected a break in the wiring to that speaker. On some other makes a B1049 may map to a different body/comfort circuit, so the definition should be confirmed for the specific vehicle. It is typically a comfort/convenience fault rather than a safety issue. This code is most commonly reported on 2008-2013 Nissan Rogue, and 2023-2025 Nissan Sentra, with repair costs ranging from $300 to $900.
Common Causes
Typical Repair Cost
Based on 2 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose B1049, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (2)
FAQ
What does B1049 mean?
B1049 stands for "Manufacturer-Specific Body Code (GM: Audio Output #3 Left-Rear Circuit Open)." B1049 is a manufacturer-specific body code whose meaning depends on the vehicle maker. On GM/Chevrolet vehicles it generally refers to the audio amplifier output #3 (left-rear speaker) circuit being open, meaning the module detected a break in the wiring to that speaker. On some other makes a B1049 may map to a different body/comfort circuit, so the definition should be confirmed for the specific vehicle. It is typically a comfort/convenience fault rather than a safety issue.
What are the most common causes of B1049?
The most common causes of B1049 are: Open or broken wiring to the left-rear speaker, Faulty or blown speaker, Corroded or loose speaker connector, Damaged radio/amplifier output stage, Chafed or pinched harness behind trim or in door, Poor ground at the audio module. The specific cause varies by vehicle.
How much does it cost to fix B1049?
Repair costs for B1049 range from $300 to $900, depending on the vehicle and root cause.
Which vehicles are affected by B1049?
Au7o has documented B1049 across 2 vehicle models from 1 manufacturers: Nissan.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.