What causes B1552 on a Toyota?

Failed extension module Loose or corroded extension module connector Open or short in the module circuit Damaged module harness Failed radio and display receiver assembly

How do I fix B1552 on a Toyota?

Confirm the code and check audio operation Inspect and reseat the extension module connectors Test the module power and ground circuits Check the module communication line Replace the failed part only after tests fail

B1552 Extension module fault

Q: What does B1552 mean on a Toyota?

B1552. Extension module fault. The radio and display receiver assembly reports an extension module failure. 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 B1552 mean on a Toyota?

B1552. Extension module fault. The radio and display receiver assembly reports an extension module failure. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1552

Failed extension module
Loose or corroded extension module connector
Open or short in the module circuit
Damaged module harness
Failed radio and display receiver assembly

How to fix B1552

Confirm the code and check audio operation
Inspect and reseat the extension module connectors
Test the module power and ground circuits
Check the module communication line
Replace the failed part only after tests fail