Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 Toyota Avalon BaseFACTORY OEM SERVICE PROCEDURE
Navigation System
NAVIGATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (TO 12/2010)
| DTC Code | Description |
|---|---|
| B1561 | XM Tuner Disconnected (Command Line) |
| B1562 | XM Tuner Disconnected (Burst Mode) |
| B156B | Multi-media Interface ECU Disconnected |
| B156E | No Response from Multi-media Interface ECU |
| B1582 | Map Disk Reading Malfunction |
| B1585 | USB Media Malfunction |
| B1593 | No Response from Stereo Component Amplifier |
| B159F | No Response from XM Tuner |
| B15A0 | LAN Master Malfunction |
| B15A3 | Stereo Component Amplifier Malfunction |
| B15AD | Navigation Processor Malfunction |
| B15B0 | Display Screen Malfunction |
| B15B3 | Radio Tuner Malfunction |
| B15B4 | CD Changer Malfunction |
| B15B7 | Bluetooth Module Malfunction |
| B15BA | XM Tuner Malfunction |
| B15BB | Multi-media Interface ECU Malfunction |
| B15C0 | Short in GPS Antenna |
| B15C1 | Open in GPS Antenna |
| B15C2 | Speed Signal Malfunction |
| B15D3 | Stereo Component Amplifier Disconnected |
| B15DF | USB Communication Malfunction |
| B15E1 | Media Malfunction |
| B15FE | XM Tuner Antenna Disconnected |
| B15FF | XM Tuner Antenna Short |
| U0073 | Control Module Communication Bus Off |
NAVIGATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (FROM 12/2010)
| DTC Code | Description |
|---|---|
| B1561 | XM Tuner Disconnected (Command Line) |
| B1562 | XM Tuner Disconnected (Burst Mode) |
| B156B | Multi-media Interface ECU Disconnected |
| B156E | No Response from Multi-media Interface ECU |
| B1582 | Map Disk Reading Malfunction |
| B1585 | USB Media Malfunction |
| B1593 | No Response from Stereo Component Amplifier |
| B159F | No Response from XM Tuner |
| B15A0 | LAN Master Malfunction |
| B15A3 | Stereo Component Amplifier Malfunction |
| B15AD | Navigation Processor Malfunction |
| B15B0 | Display Screen Malfunction |
| B15B3 | Radio Tuner Malfunction |
| B15B4 | CD Changer Malfunction |
| B15B7 | Bluetooth Module Malfunction |
| B15BA | XM Tuner Malfunction |
| B15BB | Multi-media Interface ECU Malfunction |
| B15C0 | Short in GPS Antenna |
| B15C1 | Open in GPS Antenna |
| B15C2 | Speed Signal Malfunction |
| B15D3 | Stereo Component Amplifier Disconnected |
| B15DF | USB Communication Malfunction |
| B15E1 | Media Malfunction |
| B15FE | XM Tuner Antenna Disconnected |
| B15FF | XM Tuner Antenna Short |
| U0073 | Control Module Communication Bus Off |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.