What causes B2799 on a Toyota?

Faulty key or transponder chip Faulty transponder key amplifier Faulty certification ECU Corroded engine switch connector Faulty engine control module

How do I fix B2799 on a Toyota?

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

B2799 Engine immobilizer malfunction

Q: What does B2799 mean on a Toyota?

B2799. Engine immobilizer malfunction. The certification ECU finds a fault in the immobilizer system 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 B2799 mean on a Toyota?

B2799. Engine immobilizer malfunction. The certification ECU finds a fault in the immobilizer system and the engine may not start. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B2799

Faulty key or transponder chip
Faulty transponder key amplifier
Faulty certification ECU
Corroded engine switch connector
Faulty engine control module

How to fix B2799

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