What causes B2793 on a Toyota?

Faulty key transponder chip Unregistered or wrong key Faulty transponder key amplifier Corroded engine switch connector Failed certification ECU

How do I fix B2793 on a Toyota?

Confirm the code with a scan tool Try a known good registered key Inspect and reseat the engine switch connector Re-register the key if the chip reads Replace the key only after tests fail

B2793 Transponder chip malfunction

Q: What does B2793 mean on a Toyota?

B2793. Transponder chip malfunction. The immobilizer cannot read the key chip and the engine may not start. 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 B2793 mean on a Toyota?

B2793. Transponder chip malfunction. The immobilizer cannot read the key chip and the engine may not start. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B2793

Faulty key transponder chip
Unregistered or wrong key
Faulty transponder key amplifier
Corroded engine switch connector
Failed certification ECU

How to fix B2793

Confirm the code with a scan tool
Try a known good registered key
Inspect and reseat the engine switch connector
Re-register the key if the chip reads
Replace the key only after tests fail