VIDEO

Informace

GMC

GMC C12C5

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

GMC C12C5

Basic error definition

EVAP Control System Large Leak Detected

Cause of DTC

Engine started, battery voltage must be at least 11.5v, all electrical components must be off. The coolant temperature is less than 60 degrees Celsius, and the ambient pressure is greater than 76.2994kPa. The air intake temperature at start is between 9.04 and 16.04 degrees Celsius. The change in barometric pressure since engine start is less than 0.9998kPa. The vehicle speed is less than 74.56mph, and the purge valve has opened enough on previous driving cycle. The DME detected multiple small fuel vapor leaks; or it detected a large leak in the system during the leak test.