What causes B1248 on a Toyota?

Open or short in the AVC-LAN circuit Loose or corroded connector at the radio and player ECU Damaged harness on the AVC-LAN circuit Failed radio and player ECU Low system voltage

How do I fix B1248 on a Toyota?

Confirm the code and read freeze frame data Check battery voltage and the charging system Inspect and reseat the radio and player ECU connector Test the AVC-LAN circuit for opens and shorts Replace the radio and player ECU only after the circuit tests fail

B1248 AVC-LAN communication impossible

Q: What does B1248 mean on a Toyota?

B1248. AVC-LAN communication impossible. The radio and player ECU cannot talk to the gateway ECU. Applies to Toyota, Lexus and Scion models that use this code.

Category: Body
Severity: Body Warning Light
Applies to: Toyota, Lexus and Scion models that use this code

What does B1248 mean on a Toyota?

B1248. AVC-LAN communication impossible. The radio and player ECU cannot talk to the gateway ECU. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1248

Open or short in the AVC-LAN circuit
Loose or corroded connector at the radio and player ECU
Damaged harness on the AVC-LAN circuit
Failed radio and player ECU
Low system voltage

How to fix B1248

Confirm the code and read freeze frame data
Check battery voltage and the charging system
Inspect and reseat the radio and player ECU connector
Test the AVC-LAN circuit for opens and shorts
Replace the radio and player ECU only after the circuit tests fail