VIDEO

Informace

Alfa Romeo

Alfa Romeo P1DD2

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

Alfa Romeo P1DD2

Basic error definition

Torque Request Signal From Tcm Denied

Cause of DTC

A fault is detected if any of the following conditions occur: The incoming signal is set to a default value indicating an invalid signal. The incoming signal has a validity bit set in the message indicating an invalid signal. The value of the outgoing signal is not equal to the feedback signal which is immediately read back by the TCM.