Code 21 (DK or PWG Switch Cyl. 7-12)

THROTTLE VALVE SWITCH (17°) / PEDAL POSITION SWITCH (9°) CYL. 7-12
Explanation
This defect code is set when the Electronic Throttle Control (EML) control unit detects a problem with the 5 V supply to the throttle position motor.

Troubleshooting
- Check wiring and connectors for short or break
- Check 5 V supply from EML to switch
- Proceed with other displayed scan tool diagnostic instructions where applicable.