VIDEO

Informace

Cadillac

Cadillac P1A80

See the basic definition of a diagnostic error. This will help you to clarify the main causes of the fault code. You will understand the program of the control unit
Basic DTC analysis according to OBD2 protocol standard.

OBD2 or On-Board Diagnostics displays messages for basic group styles. More comprehensible code composition has been standard since 2000. The DTC code consists of five characters and its composition will be shown in this video

Insight into programming

The basic unit for the operation of any computer is the bit. Logic 0 and 1 are expressed by a single bit. Diagnostics The error code is composed of 16 bits. The first two bits define one of the four basic circuits. The video will show you a comprehensive overview of the composition of the error report

A diagnostically understandable description of the Diagnostic Trouble Code

Cadillac P1A80

Basic error definition

Rear MICU Lost Communication with Gauge Control Module (A T Message)

Cause of DTC

Poor Communication between the rear MICU and the Gauge Control Module. If DTCs B1011, B1061, and B1906 also indicated, perform the gauge control module input test. If no additional codes are present, perform, the rear MICU input test. NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.