What does code B1388 mean?

Key Transponder Signal Error: The immobilizer system is receiving an invalid transponder signal.

B1388 is rated as high severity. Address soon — may cause further damage.

B1388

Key Transponder Signal Error

Body Code · High

What does B1388 mean?

The immobilizer system is receiving an invalid transponder signal.

System: Immobilizer

B1388 is a body diagnostic trouble code indicating key transponder signal error. This code is classified as high severity, which means: address soon — may cause further damage.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.