01-21-2021, 11:37 AM
Upshift Switch Circuit High
The Engine Control Module (ECM) monitors the Upshift Switch Circuit signal. The ECM sets the OBDII code when the Upshift Switch Circuit signal is out of factory specifications.
Cause:
Faulty Upshift Switch
Upshift Switch harness is open or shorted
Upshift Switch circuit poor electrical connection
Symptoms:
Check engine light
The Engine Control Module (ECM) monitors the Upshift Switch Circuit signal. The ECM sets the OBDII code when the Upshift Switch Circuit signal is out of factory specifications.
Cause:
Faulty Upshift Switch
Upshift Switch harness is open or shorted
Upshift Switch circuit poor electrical connection
Symptoms:
Check engine light
![[-]](https://throttlefix.com/forum/images/bootbb/collapse.png)