DTC P1B20 Chevrolet
FSM Invalid Data Received From Brake Control Module. Algorithm Based Failures. Event Information
FSM Invalid Data Received From Brake Control Module. Algorithm Based Failures. Event Information
Description
The control module is continually supplied with necessary information from the Brake control module (BCM) via CAN communication. The control module checks the quality of the information from the Brake control module (BCM). The diagnostic trouble code (DTC) is stored if the control module detects that: Transmitting control module indicates a lower quality level of the information than what Forward Sensing Module (FSM) accepts. The control modules test for the diagnostic trouble code (DTC) starts in the event of: Engine running. Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.
Cause and Solution
Look for the cause of the fault in the brake control module (BCM).
Video Guide
Diagnostic Info
- DTC Code: P1B20
- Brand: Chevrolet