VIDEO

Informace

KIA

KIA U0121

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

KIA U0121

Basic error definition

A T Torque Converter Clutch - No RPM Drop At Lockup

Cause of DTC

Engine started; vehicle driven at over 1750 rpm at 50 mph for 20 seconds, TCC command at 100%, and the PCM detected the engine speed was not within 60 rpm of ISS speed with the TP angle less than 30 degrees. The test must fail 3 times on one trip to set a code.