DTC Audi P1558 Short Explanation
Channel: Maxidot Audi
Date: 20/06/2020

The video focuses on the basic Audi diagnostic error code.
Contents:
0:21 Basic DTC analysis according to OBD2 protocol standard.
1:48 Insight into programming
- an explanation of what a bit is and how a byte is formed
- decoding the Error Code to the base programming
2:58 A diagnostically understandable description of the Diagnostic Trouble Code
3:05 Basic error definition
- Possible causes or errors of the car and its parts describing the mentioned error

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Make: 
Audi 
Code: 
P1558 
Definition: 
Throttle Actuator Electrical Malfunction 
Description: 
Engine started, battery voltage at least 11.5v, all electrical components off, ground connections between engine and chassis well connected, coolant temperature at least 80-degrees Celicius and the throttle valve must not be damaged or dirty; and the ECM detected the signal from the Throttle Position Valve Module to the ECM detected was erratic, non existent or unreliable (too high or too low). 
Cause: 
Throttle valve control module has failed
Throttle valve control module’s circuit has shorted or is open
The ECM has failed