General Information

Air Conditioner
B1812 Vehicle Speed sensor (TCU) fault - CAN Signal - General Information

Component Location





General Description

The A/C Control Unit will only update the Ambient Temperature Display when vehicle speed is received from the TCU through the CAN lines.

DTC Description

DTC B1812 sets if the vehicle speed signal has not been received through the CAN lines.

DTC Detecting Condition





Diagnostic Circuit Diagram