VIDEO

Informace

Chevrolet

Chevrolet P0A27

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

Chevrolet P0A27

Basic error definition

Battery Voltage Low

Cause of DTC

Case 1 (Low voltage) Enable Conditions When Vign lt; 9.5 V ± 0.5 V is continued for 500 msec during Vref gt; = 4.35 mph. When Vign lt; 8.5 V ± 0.5 V is continued for 500 msec during Vref lt; 4.35 mph. - If IGN voltage is recovered to normal operating voltage, the system recovers to normal state. Case 2 (Under voltage) Enable Conditions When Vign lt; 7.2 V ± 0.5 V is continued for 56 msec. - If IGN voltage is recovered to normal operating voltage, the system recovers to normal state.