VIDEO

Informace

Lexus

Lexus P0071

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

Lexus P0071

Basic error definition

Refrigerant Leaks

Cause of DTC

DTC B1079 will be set when the A C pressure sensor detects the refrigerant pressure of specified level or less. Current trouble: The refrigerant amount is not at the specified level, or the wiring harness or connector between the A C-ECU and A C pressure sensor, and the A C-ECU itself or A C pressure sensor itself may be failed. Past trouble: If DTC B1079 is stored as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) between the A C-ECU and the A C pressure sensor. If the connectors and wiring are normal, and obviously the ECU is the cause of the trouble, replace the ECU. If in doubt, do not replace the ECU. NOTE: When DTC B1079 is set, the A C indicator of A C control panel flashes.