What does code B1390 mean?

Immobilizer ECU Malfunction: The immobilizer control module has an internal fault.

B1390 is rated as high severity. Address soon — may cause further damage.

B1390

Immobilizer ECU Malfunction

Body Code · High

What does B1390 mean?

The immobilizer control module has an internal fault.

System: Immobilizer

B1390 is a body diagnostic trouble code indicating immobilizer ecu malfunction. 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.