What causes B1241 on a Toyota?

Open or short in the door control switch circuit Loose or corroded connector at the main body ECU Damaged harness on the door control switch circuit Failed main body ECU Low system voltage

How do I fix B1241 on a Toyota?

Confirm the code and read freeze frame data Check battery voltage and the charging system Inspect and reseat the main body ECU connector Test the door control switch circuit for opens and shorts Replace the main body ECU only after the circuit tests fail

B1241 Body ECU switch circuit diagnosis

Q: What does B1241 mean on a Toyota?

B1241. Body ECU switch circuit diagnosis. A monitored door lock switch shows an abnormal output. 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 B1241 mean on a Toyota?

B1241. Body ECU switch circuit diagnosis. A monitored door lock switch shows an abnormal output. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1241

Open or short in the door control switch circuit
Loose or corroded connector at the main body ECU
Damaged harness on the door control switch circuit
Failed main body ECU
Low system voltage

How to fix B1241

Confirm the code and read freeze frame data
Check battery voltage and the charging system
Inspect and reseat the main body ECU connector
Test the door control switch circuit for opens and shorts
Replace the main body ECU only after the circuit tests fail