VIDEO

Informace

Chevrolet

Chevrolet U0155

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 U0155

Basic error definition

Input Speed Sensor A (Turbine Revolution Sensor)

Cause of DTC

The input speed sensor detects input shaft rpm (revolutions per minute). It is located on the input side of the automatic transmission. Monitors revolution of sensor 1 and sensor 2 for non-standard conditions. This is an OBD-II self-diagnostic item. Diagnostic trouble code P0717 is detected under the following conditions: - When TCM does not receive the proper voltage signal from the sensor. - When TCM detects an irregularity only at position of 4th gear for input speed sensor 2.