What causes B1262 on a Toyota?

Open or short in the communication circuit between the A/C ECU and the gateway ECU Loose or corroded connector at the A/C control assembly Damaged harness on the communication circuit between the A/C ECU and the gateway ECU Failed A/C control assembly Low system voltage

How do I fix B1262 on a Toyota?

Confirm the code and read freeze frame data Check battery voltage and the charging system Inspect and reseat the A/C control assembly connector Test the communication circuit between the A/C ECU and the gateway ECU for opens and shorts Replace the A/C control assembly only after the circuit tests fail

B1262 A/C ECU communication stop

Q: What does B1262 mean on a Toyota?

B1262. A/C ECU communication stop. The A/C control assembly drops off the bus for more than 10 seconds. 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 B1262 mean on a Toyota?

B1262. A/C ECU communication stop. The A/C control assembly drops off the bus for more than 10 seconds. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1262

Open or short in the communication circuit between the A/C ECU and the gateway ECU
Loose or corroded connector at the A/C control assembly
Damaged harness on the communication circuit between the A/C ECU and the gateway ECU
Failed A/C control assembly
Low system voltage

How to fix B1262

Confirm the code and read freeze frame data
Check battery voltage and the charging system
Inspect and reseat the A/C control assembly connector
Test the communication circuit between the A/C ECU and the gateway ECU for opens and shorts
Replace the A/C control assembly only after the circuit tests fail